32 Landing Gear
32 Landing Gear
32 Landing Gear
32 LANDING GEAR
32 LANDING GEAR
UFD4200
UFD4200
TABLE OF CONTENTS
Page
GENERAL
** System Presentation (1) ....................... 1
** System Controls & Indicating Present. (1) .... 9
EFFECTIVITY
ALL
32 CONTENTS
Page i
Dec 31/00
32 LANDING GEAR
32 LANDING GEAR
UFD4200
TABLE OF CONTENTS
Page
UFD4200
EFFECTIVITY
ALL
32 CONTENTS
Page ii
Dec 31/00
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 GENERAL SYSTEM PRESENTATION
TMULDG101 LEVEL 1
UFD4200
CONTENTS:
Gear
Extension/Retraction
Brakes
Steering
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page 1
1
Feb 29/96
32 LANDING GEAR
TMULDG101-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page 2
2
Feb 29/96
TMULDG101-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-00-00
Page
Page 3
3
Feb 29/96
32 LANDING GEAR
TMULDG101-T02 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page 4
4
Feb 29/96
TMULDG101-P02 LEVEL 1
UFD4200
32 LANDING GEAR
32-00-00
Page
Page 5
5
Feb 29/96
32 LANDING GEAR
TMULDG101-T03 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page 6
6
Feb 29/96
TMULDG101-P03 LEVEL 1
UFD4200
32 LANDING GEAR
32-00-00
Page
Page 7
7
Feb 29/96
32 LANDING GEAR
SELF EXAMINATION
Which hydraulic system powers normal landing gear
operation ?
A - Green system.
B - Blue system.
C - Yellow system.
TMULDG101 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page 8
8
Feb 29/96
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 GENERAL LANDING GEAR SYSTEM
CONTROLS AND INDICATING
PRESENTATION
TMULD40ZZ LEVEL 1
UFD4200
CONTENTS:
Landing Gear Panel
Auto Brake Panel
A/SKID & N/W STRG Switch
Triple Indicator
Landing Gear Control Lever
Gravity Extension Crank Handle
Parking Brake Handle
ECAM System Display
Rudder Pedals
Nose Wheel Steering Handle
Brake Fan Control Panel
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page 9
1
Oct 31/97
32 LANDING GEAR
TMULD40ZZ-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page10
2
Oct 31/97
TMULD40ZZ-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-00-00
Page
Page11
3
Oct 31/97
32 LANDING GEAR
TMULD40ZZ-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page12
4
Oct 31/97
32 LANDING GEAR
32 - LANDING GEAR
32-30-00 LANDING GEAR RETRACTION/EXTENSION
PRESENTATION
TMULDGD05 LEVEL 1
UFD4200
CONTENTS:
Principle
Normal Retraction
Normal Extension
Free Fall Extension
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-30-00
Page
Page13
1
Nov 30/98
32 LANDING GEAR
TMULDGD05-T01 LEVEL 1
UFD4200
PRINCIPLE
Gear and door sequencing is electrically controlled
by Landing Gear Control and Interface Units (LGCIU) 1
and 2.
Each Landing Gear Control Interface Unit in turn
controls a complete gear cycle : one "UP" selection
and one "DOWN" selection.
They switch over automatically at each retraction
cycle, or in case of sequencing system failure.
The gear up and down positions and the door close and
open positions are monitored by duplicated detectors.
An interlock mechanism prevents unsafe retraction by
locking the lever in the "DOWN" position when any shock
absorber is not extended.
NOTE : The nose wheel is automatically centered by a
cam when the shock absorber is extended.
The two systems are electrically segregated with
different connections on the related selector valves.
The landing gear is powered by the green hydraulic
system. In case of failure, the gear can be extended
mechanically from the cockpit by means of a gravity
extension crank handle.
The safety valve cuts landing gear hydraulic supply
in normal landing gear retraction/extension ; the
cut-out valve cuts landing gear hydraulic supply in
free fall extension.
LGCIU 1 provides gear positions to the landing gear
indicator panel.
LGCIU 1 and 2 provide gear and door positions to the
ECAM system.
Other aircraft systems are linked to the LGCIUs for
"flight/ground" signals.
EFFECTIVITY
EFFECTIVITY
ALL
32-30-00
Page
Page14
2
Nov 30/98
TMULDGD05-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-30-00
Page
Page15
3
Nov 30/98
32 LANDING GEAR
TMULDGD05-T02 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-30-00
Page
Page16
4
Nov 30/98
TMULDGD05-P02 LEVEL 1
UFD4200
32 LANDING GEAR
32-30-00
Page
Page17
5
Nov 30/98
32 LANDING GEAR
TMULDGD05-T03 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-30-00
Page
Page18
6
Nov 30/98
TMULDGD05-P03 LEVEL 1
UFD4200
32 LANDING GEAR
32-30-00
Page
Page19
7
Nov 30/98
32 LANDING GEAR
TMULDGD05-T04 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-30-00
Page
Page20
8
Nov 30/98
TMULDGD05-P04 LEVEL 1
UFD4200
32 LANDING GEAR
32-30-00
Page
Page21
9
Nov 30/98
32 LANDING GEAR
SELF EXAMINATION
What controls the landing gear normal operating
sequence ?
A - Either LGCIU in turn.
B - Both LGCIUs simultaneously.
C - The crank handle.
Which unit gives the landing gear position to ECAM
display ?
A - Either LGCIU in turn.
B - Both LGCIUs simultaneously.
C - LGCIU 1 only.
TMULDGD05 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-30-00
Page
Page 22
10
Nov 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-61-00 LANDING GEAR SYSTEM INDICATIONS
TMULDG501 LEVEL 1
UFD4200
CONTENTS:
Landing Gear System Indicator Panel
ECAM Page
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-61-00
Page
Page23
1
Oct 31/97
32 LANDING GEAR
are
UNLOCK LIGHT
An "UNLK" light is provided for each gear.
It comes on red when the corresponding gear is not
locked in the selected position.
TRIANGLE LIGHT
A green triangle light comes on when the corresponding
gear is locked down.
ECAM PAGE
TMULDG501-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-61-00
Page
Page24
2
Oct 31/97
TMULDG501-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-61-00
Page
Page25
3
Oct 31/97
32 LANDING GEAR
SELF EXAMINATION
TMULDG501 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-61-00
Page
Page26
4
Oct 31/97
32 LANDING GEAR
32 - LANDING GEAR
32-61-00 LANDING GEAR SYSTEM WARNINGS
TMULDA601 LEVEL 3
UFD4200
CONTENTS:
Gear Not Downlocked
Gear Not Down
Shock Absorber Fault
Doors Not Closed
Gear Not Uplocked
Gear Uplock Fault
LGCIU 1 (2) Fault
System Disagree
EFFECTIVITY
EFFECTIVITY
ALL
32-61-00
Page
Page27
1
Sep 30/99
TMULDA601-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-61-00
Page
Page28
2
Sep 30/99
TMULDA601-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-61-00
Page
Page29
3
Sep 30/99
32 LANDING GEAR
TMULDA601 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-61-00
Page
Page30
4
Sep 30/99
32 LANDING GEAR
32 - LANDING GEAR
32-31-00 LANDING GEAR NORMAL OPERATION
TMULDGE03 LEVEL 3
UFD4200
CONTENTS:
Extension
Retraction
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page31
1
Nov 30/97
32 LANDING GEAR
TMULDGE03-T01 LEVEL 3
UFD4200
DOOR OPENING
When DOWN is selected, the Landing Gear Control and
Interface Unit takes the control of the extension
sequence.
The LGCIU signals the doors to open via selector valves
and the door proximity detectors signal the doors
fully open position back to the LGCIU in order to
continue the sequence.
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page32
2
Nov 30/97
TMULDGE03-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page33
3
Nov 30/97
32 LANDING GEAR
TMULDGE03-T02 LEVEL 3
UFD4200
GEAR DOWN
When ALL doors are fully open, the LGCIU commands a
gear extension while maintaining the doors "open"
signal.
The gear proximity detectors signal to the LGCIU that
the gears are downlocked.
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page34
4
Nov 30/97
TMULDGE03-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page35
5
Nov 30/97
32 LANDING GEAR
TMULDGE03-T03 LEVEL 3
UFD4200
DOOR CLOSING
When ALL the gear is down and locked, the LGCIU signals
the doors to close and lock stay actuators to
pressurize, while maintaining the gear extended
signal.
Door closing hydraulic pressure is fed to the lock
stay actuators to back up the downlock springs.
Door uplock proximity detectors signal to the LGCIU
that the doors are uplocked.
As the doors begin to close, the LGCIU cancels the
gear extended signal while maintaining the door "close"
signal.
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page36
6
Nov 30/97
TMULDGE03-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page37
7
Nov 30/97
32 LANDING GEAR
TMULDGE03-T04 LEVEL 3
UFD4200
DOOR OPENING
The LGCIU must detect all three shock absorbers
extended before allowing the selection of the landing
gear control lever to UP.
The LGCIU signals the doors to open via selector
valves, and the doors proximity detectors signal the
doors fully open position back to the LGCIU, in order
to continue the sequence.
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page38
8
Nov 30/97
TMULDGE03-P04 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page39
9
Nov 30/97
32 LANDING GEAR
TMULDGE03-T05 LEVEL 3
UFD4200
GEAR UP
When ALL doors are fully open, the LGCIU signals the
landing gear to raise while maintaining the doors
"open" signal to keep the doors "open" line
pressurized.
The gear uplock proximity detectors signal the LGCIU
that the gear is uplocked.
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page 40
10
Nov 30/97
TMULDGE03-P05 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page 41
11
Nov 30/97
32 LANDING GEAR
TMULDGE03-T06 LEVEL 3
UFD4200
DOOR CLOSING
When ALL the landing gear is up and locked, the LGCIU
signals the doors to close while maintaining landing
gear UP signal to keep the "raise" line pressurized.
Door uplock proximity detectors signal the LGCIU that
the doors are uplocked.
As soon as the last door closes and locks, the LGCIU
cancels the landing gear "raise" signal and maintains
the door close signal as long as the safety valve is
open.
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page 42
12
Nov 30/97
TMULDGE03-P06 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page 43
13
Nov 30/97
32 LANDING GEAR
TMULDGE03-T07 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page 44
14
Nov 30/97
TMULDGE03-P07 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page 45
15
Nov 30/97
32 LANDING GEAR
SELF EXAMINATION
What is the normal retraction
A - Door open, gear up,
gear up signal.
B - Door open, gear up,
gear up signal.
C - Door open, gear up,
door close signal.
sequence?
door close, cancel
door close, maintain
door close, cancel
TMULDGE03 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page 46
16
Nov 30/97
32 LANDING GEAR
32 - LANDING GEAR
32-33-00 LANDING GEAR AND DOORS - FREE
FALL EXTENSION
TMULDGL02 LEVEL 3
UFD4200
CONTENTS:
General
Initial Configuration
Lever Movement up to 1.5 Turns
Lever Movement between 1.6 and 1.8 Turns
Lever Movement between 1.9 and 3 Turns
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-33-00
Page
Page47
1
Jan 31/95
32 LANDING GEAR
TMULDGL02-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-33-00
Page
Page48
2
Jan 31/95
TMULDGL02-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-33-00
Page
Page49
3
Jan 31/95
32 LANDING GEAR
TMULDGL02-T02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-33-00
Page
Page50
4
Jan 31/95
TMULDGL02-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-33-00
Page
Page51
5
Jan 31/95
32 LANDING GEAR
TMULDGL02-T03 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-33-00
Page
Page52
6
Jan 31/95
TMULDGL02-P03 LEVEL 3
UFD4200
32 LANDING GEAR
FREE FALL EXTENSION - LEVER MOVEMENT BETWEEN 1.6 AND 1.8 TURNS
EFFECTIVITY
EFFECTIVITY
ALL
32-33-00
Page
Page53
7
Jan 31/95
32 LANDING GEAR
TMULDGL02-T04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-33-00
Page
Page54
8
Jan 31/95
TMULDGL02-P04 LEVEL 3
UFD4200
32 LANDING GEAR
32-33-00
Page
Page55
9
Jan 31/95
32 LANDING GEAR
SELF EXAMINATION
TMULDGL02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-33-00
Page
Page 56
10
Jan 31/95
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 LANDING GEAR SAFETY PRECAUTIONS
TMULDGJ02 LEVEL 2
UFD4200
CONTENTS:
Landing Gear Control Lever
Hydraulic
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page57
1
Oct 31/99
32 LANDING GEAR
TMULDGJ02-T01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page58
2
Oct 31/99
TMULDGJ02-P01 LEVEL 2
UFD4200
32 LANDING GEAR
32-00-00
Page
Page59
3
Oct 31/99
32 LANDING GEAR
TMULDGJ02-T02 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page60
4
Oct 31/99
TMULDGJ02-P02 LEVEL 2
UFD4200
32 LANDING GEAR
LANDING GEAR SAFETY PRECAUTIONS - MLG AND MLG DOOR SAFETY DEVICES
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page61
5
Oct 31/99
32 LANDING GEAR
TMULDGJ02-T03 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page62
6
Oct 31/99
TMULDGJ02-P03 LEVEL 2
UFD4200
32 LANDING GEAR
LANDING GEAR SAFETY PRECAUTIONS - NLG AND NLG DOOR SAFETY DEVICES
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page63
7
Oct 31/99
32 LANDING GEAR
TMULDGJ02 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page64
8
Oct 31/99
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 LANDING GEAR DOORS GROUND
OPERATION
TMULDGC03 LEVEL 2
UFD4200
CONTENTS:
Main Landing Gear Door Ground Operation
Nose Landing Gear Doors Ground Operation
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page65
1
Jul 31/96
32 LANDING GEAR
TMULDGC03-T01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page66
2
Jul 31/96
TMULDGC03-P01 LEVEL 2
UFD4200
32 LANDING GEAR
LANDING GEAR DOORS GROUND OPERATION - MAIN LANDING GEAR DOOR GROUND OPERATION
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page67
3
Jul 31/96
32 LANDING GEAR
TMULDGC03-T02 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page68
4
Jul 31/96
TMULDGC03-P02 LEVEL 2
UFD4200
32 LANDING GEAR
LANDING GEAR DOORS GROUND OPERATION - NOSE LANDING GEAR DOORS GROUND OPERATION
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page69
5
Jul 31/96
32 LANDING GEAR
TMULDGC03 LEVEL 2
UFD4200
DOORS CLOSING
On the ground,
- reposition the ground door opening control
handle in the CLOSED position (the doors close)
and put the safety pin back in position.
In the cockpit,
- check that doors are UP and LOCKED, on the
WHEEL ECAM page,
- depressurize the hydraulic systems,
- and remove the warning notices.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page70
6
Jul 31/96
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 LANDING GEAR DOORS GROUND
OPENING DESCRIPTION/OPERATION
TMULDGW01 LEVEL 3
UFD4200
CONTENTS:
General
Main Doors
Nose Doors
Hydraulic Operation
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page71
1
Aug 31/96
32 LANDING GEAR
NOSE DOORS
Each main door and nose door has a ground door opening
system that comprises these primary components :
- a ground door opening control handle,
- a mechanical transmission,
- a by-pass valve,
- a release mechanism in the door uplock.
The control handle has two lockable positions.
When it is set to the "DOOR OPEN" position, it causes
the mechanical system to :
- operate the door by-pass valve,
- release the door from its uplock.
This prevents a hydraulic lock, and allows the
hydraulic fluid to be released from the door actuating
cylinder "DOOR CLOSED" line. The door then moves by
gravity.
TMULDGW01-T01 LEVEL 3
UFD4200
MAIN DOORS
The ground opening control handle is located forward
of the respective main landing gear bay into the
hydraulic compartment. This location places the
operator in a safe position with a clear view of the
door travel.
The handle is connected through a push-pull cable to
the door by-pass valve on the outboard side of the
main landing gear bay.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page72
2
Aug 31/96
TMULDGW01-P01 LEVEL 3
UFD4200
32 LANDING GEAR
LANDING GEAR AND DOORS GROUND OPENING DESCRIPTION/OPERATION - MAIN DOORS - NOSE DOORS
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page73
3
Aug 31/96
32 LANDING GEAR
TMULDGW01-T02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page74
4
Aug 31/96
TMULDGW01-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
Page75
5
Aug 31/96
32 LANDING GEAR
TMULDGW01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page76
6
Aug 31/96
32 LANDING GEAR
32 - LANDING GEAR
32-31-00 LANDING GEAR AND DOORS - LGCIU
CONTROL SIGNALS
TMULDGG01 LEVEL 3
UFD4200
CONTENTS:
Up Selection
Down Selection
Door Uplocks
Door Fully Open
Gear Uplocks
Gear Downlocks
Extended or Compressed
Door Selector Valve
Gear Selector Valve
L/G Retraction Interlock Solenoid
LGCIU 2
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page77
1
Dec 31/94
32 LANDING GEAR
GEAR DOWNLOCKS
DOWN SELECTION
EXTENDED OR COMPRESSED
DOOR UPLOCKS
Three door uplock signals which come from door uplock
proximity detectors, are sent to the LGCIU to indicate
whether doors are uplocked, or not.
Four door fully open signals (two for nose doors) which
come from the corresponding proximity detectors, are
sent to the LGCIU to indicate whether doors are fully
open, or not.
TMULDGG01-T01 LEVEL 3
UFD4200
GEAR UPLOCKS
Three gear uplock signals which come from gear uplock
proximity detectors, are sent to the LGCIU to indicate
whether gears are uplocked, or not.
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page78
2
Dec 31/94
TMULDGG01-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-31-00
Page
Page79
3
Dec 31/94
32 LANDING GEAR
for
system
TMULDGG01-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-31-00
Page
Page80
4
Dec 31/94
32 LANDING GEAR
32 - LANDING GEAR
32-60-00 LANDING GEAR AND DOORS - LGCIU
MONITORING INTERFACES
TMULDGH01 LEVEL 3
UFD4200
CONTENTS:
ARINC and Indicator Panel
Discrete
EFFECTIVITY
EFFECTIVITY
ALL
32-60-00
Page
Page81
1
Aug 31/00
32 LANDING GEAR
TMULDGH01-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-60-00
Page
Page82
2
Aug 31/00
TMULDGH01-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-60-00
Page
Page83
3
Aug 31/00
TMULDGH01-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-60-00
Page
Page84
4
Aug 31/00
TMULDGH01-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-60-00
Page
Page85
5
Aug 31/00
32 LANDING GEAR
TMULDGH01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-60-00
Page
Page86
6
Aug 31/00
32 LANDING GEAR
32 - LANDING GEAR
32-11-00 LANDING GEAR AND DOORS - MAIN
LANDING GEAR DESCRIPTION
TMULDAI09 LEVEL 2
UFD4200
CONTENTS:
General
Main Fitting
Sliding Tube/Axle
Actuating Cylinder
Side Stay Assembly
Lock Stay
Lock Stay Actuator
Torque Links/Slave Link
Torque Link Damper
EFFECTIVITY
EFFECTIVITY
ALL
32-11-00
Page
Page87
1
Sep 30/98
32 LANDING GEAR
TMULDAI09-T01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-11-00
Page
Page88
2
Sep 30/98
TMULDAI09-P01 LEVEL 2
UFD4200
32 LANDING GEAR
32-11-00
Page
Page89
3
Sep 30/98
32 LANDING GEAR
TMULDAI09-T02 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-11-00
Page
Page90
4
Sep 30/98
TMULDAI09-P02 LEVEL 2
UFD4200
32 LANDING GEAR
32-11-00
Page
Page91
5
Sep 30/98
32 LANDING GEAR
TMULDAI09-T03 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-11-00
Page
Page92
6
Sep 30/98
TMULDAI09-P03 LEVEL 2
UFD4200
32 LANDING GEAR
32-11-00
Page
Page93
7
Sep 30/98
32 LANDING GEAR
The torque links align the main fitting and the sliding
tube, but let vertical movement between the parts
occur.
The slave link is mounted at the rear.
TORQUE LINK DAMPER
The torque link damper is a spring centered, two way
hydraulic unit, which has its own hydraulic reservoir.
Its function is to decrease the landing vibrations
through the torque links.
TMULDAI09-T04 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-11-00
Page
Page94
8
Sep 30/98
TMULDAI09-P04 LEVEL 2
UFD4200
32 LANDING GEAR
MAIN LANDING GEAR DESCRIPTION - ACTUATING CYLINDER - SIDE STAY ASSEMBLY - LOCK STAY
LOCK STAY ACTUATOR - TORQUE LINKS/SLAVE LINK - TORQUE LINK DAMPER
EFFECTIVITY
EFFECTIVITY
ALL
32-11-00
Page
Page95
9
Sep 30/98
32 LANDING GEAR
TMULDAI09 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-11-00
Page
Page 96
10
Sep 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-12-00 LANDING GEAR AND DOORS - MAIN
LANDING GEAR DOORS DESCRIPTION
TMULDCI03 LEVEL 2
UFD4200
CONTENTS:
General
Main Door
Main Landing Gear Door Uplock
Hinged Fairing
Fixed Fairing
EFFECTIVITY
EFFECTIVITY
ALL
32-12-00
Page
Page97
1
Dec 31/94
32 LANDING GEAR
HINGED FAIRING
MAIN DOOR
The main door is attached to the fuselage struture by
two hinges and is operated by an hydraulic actuator.
Attached to the forward end of the main door is the
hydraulic actuator and an uplock roller which is used
to keep the main door in the closed position.
Installed on the rear end of the main door are steps,
used for access to the gear well compartment.
Two ramps are installed on the inside of the main door.
These ramps make sure that the gear does not catch on
the main door during a free-fall extension.
Two proximity sensors and targets send the door open
position signal of the main door to the Landing Gear
Control and Interface Units (LGCIUs).
FIXED FAIRING
The fixed fairing is attached to the outboard side of
the landing gear main fitting by two types of
attachment assembly.
Two adjustable studs are installed on the front of the
main fitting.
Three rod ends are installed, one on the front of the
main fitting and two on the rear of the main fitting.
TMULDCI03-T01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-12-00
Page
Page98
2
Dec 31/94
TMULDCI03-P01 LEVEL 2
UFD4200
32 LANDING GEAR
32-12-00
Page
Page99
3
Dec 31/94
32 LANDING GEAR
TMULDCI03 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-12-00
Page
100
Page
4
Dec 31/94
32 LANDING GEAR
32 - LANDING GEAR
32-21-00 LANDING GEAR AND DOORS - NOSE
LANDING GEAR DESCRIPTION
TMULDBI01 LEVEL 2
UFD4200
CONTENTS:
General
Shock Strut Assembly
Shock Absorber
Actuating Cylinder
Drag Strut Assembly
Lockstay Assembly
Lockstay Downlock Actuator
Sliding Tube
Rotating Tube
Torque Link
EFFECTIVITY
EFFECTIVITY
ALL
32-21-00
Page
101
Page
1
Jan 31/95
32 LANDING GEAR
TMULDBI01-T01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
LOCKSTAY ASSEMBLY
The lockstay assembly provides an overcentered stop
and a geometric lock of the nose gear. It includes
both systems downlock proximity detectors.
On the ground, a safety pin locks the two arms of the
lockstay.
LOCKSTAY DOWNLOCK ACTUATOR
The downlock actuator locks and unlocks both brace
assemblies of the lockstay. It is assisted by two
springs.
SLIDING TUBE
The sliding tube includes the wheel axle. It is
inclined 9 degrees forward, this design allows the
wheels to return freely to the centered position.
The two system proximity detectors provide signals for
both gear extended and wheel centered positions.
The towing lug is designed to shear if the towing load
is more than the limit.
32-21-00
Page
102
Page
2
Jan 31/95
TMULDBI01-P01 LEVEL 2
UFD4200
32 LANDING GEAR
32-21-00
Page
103
Page
3
Jan 31/95
32 LANDING GEAR
TMULDBI01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-21-00
Page
104
Page
4
Jan 31/95
32 LANDING GEAR
32 - LANDING GEAR
32-22-00 LANDING GEAR AND DOORS - NOSE
LANDING GEAR DOORS DESCRIPTION
TMULDDI01 LEVEL 2
UFD4200
CONTENTS:
General
Main Doors
Proximity Detectors
Aft Doors
Leg Door
EFFECTIVITY
EFFECTIVITY
ALL
32-22-00
Page
105
Page
1
Dec 31/94
32 LANDING GEAR
LEG DOOR
MAIN DOORS
The two main doors are hydraulically operated. These
two doors are connected mechanically to the aircraft
by a linkage which has two control rods connected to
the same bellcrank.
This bellcrank is installed at the roof of the landing
gear well and is operated by one double-acting
actuator.
An uplock assembly latches the doors in the closed
position.
PROXIMITY DETECTORS
TMULDDI01-T01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-22-00
Page
106
Page
2
Dec 31/94
TMULDDI01-P01 LEVEL 2
UFD4200
32 LANDING GEAR
32-22-00
Page
107
Page
3
Dec 31/94
32 LANDING GEAR
TMULDDI01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-22-00
Page
108
Page
4
Dec 31/94
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 LANDING GEAR COMPONENTS
TMULD1I02 LEVEL 2
UFD4200
CONTENTS:
NLG Shock Absorber
MLG Shock Absorber
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
109
Page
1
Oct 31/97
32 LANDING GEAR
TMULD1I02-T01 LEVEL 2
UFD4200
DESCRIPTION
The shock absorber is of the single chamber type
without a separator piston and is double acting.
The shock absorber is filled with hydraulic fluid and
nitrogen through a single standard servicing valve in
the upper part of the leg. Calibration of the metering
devices in the shock absorber is the same for the
different versions of the aircraft.
Holes are included in the leg to show possible leaks
from the dynamic seal of the shock absorber.
It is possible to remove the shock absorber without
drainage of the hydraulic fluid.
A placard bonded to the leg shows the filling curves.
The shock absorber includes 2 centering cams, the lower
cam is part of the plunger tube and the upper cam is
part of the sliding tube. When the shock absorber is
fully extended the pressure of the nitrogen causes the
cams to engage. The wheels then return automatically
to the center position.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
110
Page
2
Oct 31/97
TMULD1I02-P01 LEVEL 2
UFD4200
32 LANDING GEAR
32-00-00
Page
111
Page
3
Oct 31/97
32 LANDING GEAR
TMULD1I02-T02 LEVEL 2
UFD4200
DESCRIPTION
The shock absorber is a telescopic oleo-pneumatic unit
which includes the sliding tube. It is installed in
the main fitting to transmit the landing, take off and
taxiing loads to the wing.
When the shock absorber is compressed, the load is
transmitted to the hydraulic fluid and nitrogen gas.
The shock absorber is a 2 stage unit and contains four
chambers:
- a first stage gas chamber contains gas at a
low pressure and hydraulic fluid,
- a recoil chamber that contains hydraulic fluid,
- a compression chamber that contains hydraulic
fluid,
- a 2nd stage gas chamber that contains gas at
a high pressure.
Primary control of the shock absorber recoil is:
- the fluid flow from the recoil chamber into
the gas chamber,
- the fluid flow from the gas chamber into
the compression chamber.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
112
Page
4
Oct 31/97
TMULD1I02-P02 LEVEL 2
UFD4200
32 LANDING GEAR
32-00-00
Page
113
Page
5
Oct 31/97
32 LANDING GEAR
TMULD1I02 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
114
Page
6
Oct 31/97
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 LANDING GEAR COMPONENTS
TMULD2I01 LEVEL 3
UFD4200
CONTENTS:
LGCIU
Proximity Detectors
Safety Valve
Selector Valve Manifold
Hydraulic Fuses
MLG Actuating Cylinder
MLG Uplock Box
MLG Door Actuating Cylinder
MLG Door Uplock Box
NLG Actuating Cylinder
NLG Uplock Box
NLG Door Actuating Cylinder
NLG Door Uplock Box
Cut-Out Valve
Vent Valves
Door Bypass Valves
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
115
Page
1
Apr 30/96
32 LANDING GEAR
PROXIMITY DETECTORS
IDENTIFICATION
FIN: 5GA1 (LGCIU1), 5GA2 (LGCIU2)
IDENTIFICATION
FIN: See table
LOCATION
ZONE: 121 (LGCIU1), Rack 93VU
122 (LGCIU2), Rack 94VU
DESCRIPTION
The proximity detector consists of:
- a proximity sensor,
- a sensor target.
The proximity sensor uses the variable reluctance
principle and operates on the detection of ferrous
metals. In this application the ferrous metal sensor
target supplies the electrical signal.
As the sensor target moves into or out of the proximity
sensors actuation area it causes a change in the
proximity sensors electrical property.
DESCRIPTION
Each Landing Gear Control and Interface Unit (LGCIU)
consists of an ARINC 600 4 MCU (Modular Concept Unit)
case that contains:
- 7 Printed Circuit Boards (PCU),
- an On Board Replaceable Memory Module (OBRM),
- a Power Supply Unit (PSU).
TMULD2I01-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
116
Page
2
Apr 30/96
TMULD2I01-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
117
Page
3
Apr 30/96
32 LANDING GEAR
TMULD2I01-T02 LEVEL 3
UFD4200
CUT-VIEW
Solenoid Energized:
When energized, the safety valve is open.
Solenoid De-energized:
When de-energized, the safety valve shuts off the
hydraulic pressure to the landing gear system when the
airspeed signal from ADIRU 1 and 3 is greater than
260 5 kts.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
118
Page
4
Apr 30/96
TMULD2I01-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
119
Page
5
Apr 30/96
32 LANDING GEAR
HYDRAULIC FUSES
IDENTIFICATION
FIN: 2524GM
IDENTIFICATION
FIN: 2629GM, 2630GM
LOCATION
ZONE: 148
LOCATION
ZONE: 148
DESCRIPTION
The selector valve manifold assembly consists of:
- a manifold block, equipped with hydraulic pipe
connections, a restrictor valve and a check
valve,
- a landing gear selector valve,
- a landing gear door selector valve.
Each valve has two operating solenoids. Each solenoid
has two coil windings, one for each of the landing
gear control sub-systems.
Weight: 7,09 kg (15.62 lb).
DESCRIPTION
Hydraulic fuses are installed in the open and close
lines between the nose landing gear door actuator and
the landing gear door selector valve. They close the
line in case of leakage downstream in case of a flow
rate equal to or greater than 11 l/mn (2.91 USgal/mn).
The hydraulic fuse is reset by depressurizing the green
system reservoir or by opening the bleed screw.
TMULD2I01-T03 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
120
Page
6
Apr 30/96
TMULD2I01-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
121
Page
7
Apr 30/96
32 LANDING GEAR
IDENTIFICATION
FIN: 2503GM (LH), 2504GM (RH)
IDENTIFICATION
FIN: 2509GM (LH), 2510GM (RH)
LOCATION
ZONE: 731 , 741
LOCATION
ZONE: 147, 148
DESCRIPTION
Identical for left-hand and right-hand installation.
Weight: 29,8 kg (67.71 lb).
DESCRIPTION
The uplock is hung in the same for both the left or
right-hand installations.
The same applies for the left-hand and right-hand
actuators.
Weight: 4,722 kg (10.412 lb).
TMULD2I01-T04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
122
Page
8
Apr 30/96
TMULD2I01-P04 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
123
Page
9
Apr 30/96
32 LANDING GEAR
IDENTIFICATION
FIN: 2523GM (LH), 2522GM (RH)
IDENTIFICATION
FIN: 2521GM (LH), 2520GM (RH)
LOCATION
ZONE: 147, 148
LOCATION
ZONE: 147, 148
DESCRIPTION
The actuator is suitable for left-hand and right-hand
installations.
Weight: 6,601 kg (14.553 lb).
DESCRIPTION
The uplock box is suitable for left-hand and right-hand
installations.
Weight: 4,38 kg (9.65 lb).
TMULD2I01-T05 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page124
10
Apr 30/96
TMULD2I01-P05 LEVEL 3
UFD4200
32 LANDING GEAR
LANDING GEAR COMPONENTS - MLG DOOR ACTUATING CYLINDER - MLG DOOR UPLOCK BOX
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page125
11
Apr 30/96
32 LANDING GEAR
IDENTIFICATION
FIN: 2527GM
IDENTIFICATION
FIN: 2530GM
LOCATION
ZONE: 711
LOCATION
ZONE: 123
TMULD2I01-T06 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page126
12
Apr 30/96
TMULD2I01-P06 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
Page127
13
Apr 30/96
32 LANDING GEAR
IDENTIFICATION
FIN: 2531GM
IDENTIFICATION
FIN: 2534GM
LOCATION
ZONE: 123
LOCATION
ZONE: 123
TMULD2I01-T07 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page128
14
Apr 30/96
TMULD2I01-P07 LEVEL 3
UFD4200
32 LANDING GEAR
LANDING GEAR COMPONENTS - NLG DOOR ACTUATING CYLINDER - NLG DOOR UPLOCK BOX
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page129
15
Apr 30/96
32 LANDING GEAR
TMULD2I01-T08 LEVEL 3
UFD4200
DESCRIPTION
Shuts off the high pressure supply and connects the
entire landing gear hydraulic system to the return
circuit during free fall extension.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page130
16
Apr 30/96
TMULD2I01-P08 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
Page131
17
Apr 30/96
32 LANDING GEAR
TMULD2I01-T09 LEVEL 3
UFD4200
DESCRIPTION
There are two identical mechanically operated vent
valves in the landing gear free fall extension system.
During landing gear free fall extension, operation of
the vent valve connects door close and gear raise lines
to the return circuit.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page132
18
Apr 30/96
TMULD2I01-P09 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
Page133
19
Apr 30/96
32 LANDING GEAR
TMULD2I01-T10 LEVEL 3
UFD4200
DESCRIPTION
Each bypass valve isolates its corresponding door
hydraulic actuator from the landing gear hydraulic
supply during ground opening of landing gear door(s).
Weight: 0,88 kg (1.94 lb).
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page134
20
Apr 30/96
TMULD2I01-P10 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
Page135
21
Apr 30/96
32 LANDING GEAR
TMULD2I01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page136
22
Apr 30/96
32 LANDING GEAR
32 - LANDING GEAR
32-40-00 WHEELS AND BRAKES - BRAKE SYSTEM
PRESENTATION
TMULDZ101 LEVEL 1
UFD4200
CONTENTS:
Normal Braking
Normal Braking by Auto Brake
Manual Normal Braking
Inflight Braking
Parking Brake
Alternate Braking with Anti-Skid
Alternate Braking without Anti-Skid
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
137
Page
1
Feb 29/96
32 LANDING GEAR
TMULDZ101-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
138
Page
2
Feb 29/96
TMULDZ101-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-40-00
Page
139
Page
3
Feb 29/96
32 LANDING GEAR
TMULDZ101-T02 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
140
Page
4
Feb 29/96
TMULDZ101-P02 LEVEL 1
UFD4200
32 LANDING GEAR
32-40-00
Page
141
Page
5
Feb 29/96
32 LANDING GEAR
TMULDZ101-T03 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
142
Page
6
Feb 29/96
TMULDZ101-P03 LEVEL 1
UFD4200
32 LANDING GEAR
32-40-00
Page
143
Page
7
Feb 29/96
32 LANDING GEAR
TMULDZ101-T04 LEVEL 1
UFD4200
PARKING BRAKE ON
When the parking brake handle is lifted and turned to
"ON", the parking brake control valve is energized.
The BSCU is informed that the parking brake system is
on, which deactivates the other braking modes.
Yellow pressure passes through the parking brake
control valve and reaches the dual shuttle valve.
The dual shuttle valve moves, allowing alternate system
circuit to be supplied by the parking brake system.
Brakes are supplied through the normally open alternate
servovalves.
The pressure delivered to the left hand and right hand
brakes as well as the brake accumulator pressure are
indicated on the yellow pressure triple indicator.
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
144
Page
8
Feb 29/96
TMULDZ101-P04 LEVEL 1
UFD4200
32 LANDING GEAR
32-40-00
Page
145
Page
9
Feb 29/96
32 LANDING GEAR
TMULDZ101-T05 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
Page146
10
Feb 29/96
TMULDZ101-P05 LEVEL 1
UFD4200
32 LANDING GEAR
32-40-00
Page
Page147
11
Feb 29/96
32 LANDING GEAR
TMULDZ101-T06 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
Page148
12
Feb 29/96
TMULDZ101-P06 LEVEL 1
UFD4200
32 LANDING GEAR
32-40-00
Page
Page149
13
Feb 29/96
32 LANDING GEAR
SELF EXAMINATION
Which hydraulic system powers normal braking ?
A - Green system.
B - Yellow system.
C - Blue system.
How is inflight braking initiated ?
A - By setting the landing lever to the UP
position.
B - By shock absorber extension.
C - By auto brake deactivation.
In case of normal braking system failure, how is
alternate braking applied ?
A - Automatically when the selector valve is
de-energized.
B - Automatically through the automatic
selector.
C - As soon as the brake pedals are pressed
in.
the parking brake be hydraulically powered ?
- Only by yellow high pressure.
- Only by the brake accumulator.
- Either by yellow high pressure or by the
brake accumulator.
TMULDZ101 LEVEL 1
UFD4200
How can
A
B
C
EFFECTIVITY
EFFECTIVITY
ALL
ALL
32-40-00
Page
Page150
14
Feb 29/96
32 LANDING GEAR
32 - LANDING GEAR
32-40-00 WHEELS AND BRAKES - BRAKE SYSTEM
DESCRIPTION
TMULDZZ02 LEVEL 3
UFD4200
CONTENTS:
Pedals
Brake Pedals XMTR Unit
BSCU
Selector Valve
Normal Servovalve
Wheels
Automatic Selector
Auxiliary Low Pressure Control System
Dual Valve
Dual Shuttle Valve
Alternate Servovalve
Parking Brake Control Valve
Parking Brake Operated Valve
Accumulator
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
151
Page
1
Sep 30/98
32 LANDING GEAR
TMULDZZ02-T01 LEVEL 3
UFD4200
WHEELS
AUTOMATIC SELECTOR
BSCU
SELECTOR VALVE
DUAL VALVE
NORMAL SERVOVALVES
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
152
Page
2
Sep 30/98
TMULDZZ02-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
153
Page
3
Sep 30/98
32 LANDING GEAR
TMULDZZ02-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
154
Page
4
Sep 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 WHEELS AND BRAKES - AUTO BRAKE
SYSTEM DESCRIPTION/OPERATION
TMULDG902 LEVEL 3
UFD4200
CONTENTS:
Auto Brake Modes
ADIRS
A/SKID & N/W STRG Switch
Arming
Activation
Disarming
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
155
Page
1
Sep 30/98
32 LANDING GEAR
ARMING
ADIRS
The Air Data Inertial Reference System (ADIRS) signals
the aircraft deceleration rate to the Braking and
Steering Control Unit (BSCU) to be compared with the
selected deceleration mode for braking computation.
TMULDG902-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
ACTIVATION
The automatic braking system is activated by 2 of the
3 ground spoiler extension signals coming from the
Spoiler Elevator Computers (SECs).
The DECEL light comes on green when actual aircraft
deceleration is 80 % of selected rate (LO and MED
modes) or 0.27 g (MAX mode).
DISARMING
The auto brake is disarmed by:
- Releasing the selected pushbutton out or,
- Loss of one or more arming conditions or,
- Applying sufficient force to the pedals when
auto brake is operating.
- Ground spoiler retraction.
32-42-00
Page
156
Page
2
Sep 30/98
TMULDG902-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
157
Page
3
Sep 30/98
32 LANDING GEAR
SELF EXAMINATION
In which mode is progressive pressure sent to the
brakes, 2 seconds after ground spoiler deployment:
A - MAX mode.
B - MED mode.
C - LO mode.
TMULDG902 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
158
Page
4
Sep 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 WHEELS AND BRAKES - ANTI-SKID
FUNCTION
TMULD2004 LEVEL 3
UFD4200
CONTENTS:
Purpose
BSCU
Principle
Regulation
Servovalves
ADIRU
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
159
Page
1
Jan 31/95
32 LANDING GEAR
REGULATION
BSCU
TMULD2004-T01 LEVEL 3
UFD4200
SERVOVALVES
The normal and alternate servovalves are identical but
connected differently to the BSCU.
While the two coils of the normal servovalve are
connected to system 1 and 2 respectively, only one
coil of the alternate servovalve is used.
PRINCIPLE
ADIRU
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
160
Page
2
Jan 31/95
TMULD2004-P01 LEVEL 3
UFD4200
32 LANDING GEAR
ANTI-SKID FUNCTION
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
161
Page
3
Jan 31/95
32 LANDING GEAR
SELF EXAMINATION
When does
A B C -
TMULD2004 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
162
Page
4
Jan 31/95
32 LANDING GEAR
32 - LANDING GEAR
32-40-00 WHEELS AND BRAKES - BRAKE
HYDRAULIC SYSTEM OPERATION
TMULDGT05 LEVEL 3
UFD4200
CONTENTS:
Normal Braking
Alternate Braking with Anti-Skid
Alternate Braking without Anti-Skid
Parking Brake
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
163
Page
1
Sep 30/99
32 LANDING GEAR
TMULDGT05-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
164
Page
2
Sep 30/99
TMULDGT05-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
165
Page
3
Sep 30/99
32 LANDING GEAR
TMULDGT05-T02 LEVEL 3
UFD4200
OPERATION:
The orders are entered through the pedals and an
auxiliary low pressure hydraulic system transmits the
orders via the master cylinders, to control the
distribution dual valve.
The pressure from the dual valve is delivered to the
brakes through the dual shuttle valve and the alternate
servovalves. It is indicated on the yellow pressure
triple indicator.
The alternate brake servovalve manifold comprises two
alternate servovalves and two hydraulic fuses.
The BSCU ensures the anti-skid regulation by
controlling the related servovalve.
The hydraulic fuse stops the flow in the line in case
of leakage.
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
166
Page
4
Sep 30/99
TMULDGT05-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
167
Page
5
Sep 30/99
32 LANDING GEAR
TMULDGT05-T03 LEVEL 3
UFD4200
OPERATION:
The orders are entered through the pedals only and an
auxiliary low pressure hydraulic system transmits the
orders via the master cylinders, to control the
distribution dual valve.
The pressure from the dual valve is delivered to the
brakes through the dual shuttle valve and the alternate
servovalves. It is indicated on the yellow pressure
triple indicator.
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
168
Page
6
Sep 30/99
TMULDGT05-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
169
Page
7
Sep 30/99
32 LANDING GEAR
TMULDGT05-T04 LEVEL 3
UFD4200
OPERATION:
When the parking brake handle is set to the "ON"
position, all the other braking modes and the anti-skid
system are deactivated and all the return lines are
shut off.
The parking brake electrical control valve comprises
one electrical linear transmitter which operates the
hydromechanical valve and a pressure limiter for the
dual shuttle valve supply.
The secondary slide valve of the automatic selector
isolates the return lines of the alternate brake
servovalves to prevent fluid leakage to the yellow
reservoir.
The parking brake operated valve shuts off the supply
to the alternate system to prevent leakage through the
dual valve.
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
170
Page
8
Sep 30/99
TMULDGT05-P04 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
171
Page
9
Sep 30/99
32 LANDING GEAR
SELF EXAMINATION
What is
A
B
C
TMULDGT05 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
Page172
10
Sep 30/99
32 LANDING GEAR
32 - LANDING GEAR
32-47-00 WHEELS AND BRAKES - BRAKE
TEMPERATURE SYSTEM PRESENTATION
TMULDGOZZ LEVEL 1
UFD4200
CONTENTS:
Purpose
Temperature Sensor
Brake Temperature Monitoring Unit (BTMU)
Braking and Steering Control Unit (BSCU)
EFFECTIVITY
EFFECTIVITY
ALL
32-47-00
Page
173
Page
1
Sep 30/98
32 LANDING GEAR
TMULDGOZZ-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-47-00
Page
174
Page
2
Sep 30/98
TMULDGOZZ-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-47-00
Page
175
Page
3
Sep 30/98
32 LANDING GEAR
TMULDGOZZ LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-47-00
Page
176
Page
4
Sep 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-48-00 BRAKE COOLING SYSTEM PRESENTATION
TMULDWW01 LEVEL 1
UFD4200
CONTENTS
Purpose
Control and Logic
Brake Fans
EFFECTIVITY
EFFECTIVITY
ALL
32-48-00
Page
177
Page
1
Oct 31/97
32 LANDING GEAR
TMULDWW01-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-48-00
Page
178
Page
2
Oct 31/97
TMULDWW01-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-48-00
Page
179
Page
3
Oct 31/97
32 LANDING GEAR
TMULDWW01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-48-00
Page
180
Page
4
Oct 31/97
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 WHEEL AND BRAKE ECAM PAGE
PRESENTATION
TMULDA4ZZ LEVEL 1
UFD4200
CONTENTS:
Wheel/Brake Release Indications
Anti-Skid Indication
Auto Brake Indications
Alternate Braking Indication
Brake Temperature Indications
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
181
Page
1
Oct 31/97
32 LANDING GEAR
are
TMULDA4ZZ-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
182
Page
2
Oct 31/97
TMULDA4ZZ-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-42-00
Page
183
Page
3
Oct 31/97
32 LANDING GEAR
TMULDA4ZZ LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
184
Page
4
Oct 31/97
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 WHEEL AND BRAKE SYSTEM WARNINGS
TMULDB6ZZ LEVEL 3
UFD4200
CONTENTS:
Config Parking Brake ON
Brakes Hot
Auto Brake Fault
Anti Skid NWS Fault
Anti Skid/NWS Off
Hydraulic Selector Valve Fault
Braking And Steering Control Unit System 1 (2) Fault
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
185
Page
1
Sep 30/99
TMULDB6ZZ-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
186
Page
2
Sep 30/99
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 NORMAL BRAKING COMPONENTS
TMULDBXZZ LEVEL 3
UFD4200
CONTENTS:
BSCU
Brake Selector Valve
Filter
Automatic Selector
Throttle Valve
Manifold Normal Brake Servovalves
Normal Brake Servovalves
Pressure Transducers
Hydraulic Fuses
Brake Pedal Transmitter Unit
Brake Belts (optional)
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
187
Page
1
Jun 30/00
32 LANDING GEAR
TMULDBXZZ-T01 LEVEL 3
UFD4200
DESCRIPTION
The Braking and Steering Control Unit (BSCU) consists
of:
- four power supply units grouped two by two,
- two identical sets of three boards which form
systems 1 and 2, each board is connected to an
On-Board Reprogrammable Module (OBRM),
- a rear interface in the form of two
U-shaped boards (around the connector)
comprises the lightning protection and the
switching assemblies.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
188
Page
2
Jun 30/00
TMULDBXZZ-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
189
Page
3
Jun 30/00
32 LANDING GEAR
FILTER
IDENTIFICATION
FIN: 23GG
IDENTIFICATION
FIN: 2584GM
LOCATION
ZONE: 146
LOCATION
ZONE: 146
DESCRIPTION
The selector valve directs normal hydraulic pressure
(green system) through the automatic selector to the
normal brake servovalve manifold.
It is energized for normal braking purposes.
DESCRIPTION
A filter with a filtering capability of 15 microns
absolute is installed between the delivery port of the
selector valve and the automatic selector.
The purpose of this filter is to protect the supply
of the normal servovalves downstream of the selector
valve.
TMULDBXZZ-T02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
190
Page
4
Jun 30/00
TMULDBXZZ-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
191
Page
5
Jun 30/00
32 LANDING GEAR
TMULDBXZZ-T03 LEVEL 3
UFD4200
DESCRIPTION
The automatic selector supplies the brake system with
either the green (normal braking) or yellow (alternate
braking/parking brake) pressure.
Under normal operating conditions it allows the green
hydraulic fluid to flow to the brakes and maintains
the yellow hydraulic pressure on standby status.
Should the green pressure drop below a predetermined
value, the selector automatically cuts off the green
supply and opens the passage to the yellow pressure.
In addition, it shuts off the yellow system from the
return line for parking brake application.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
192
Page
6
Jun 30/00
TMULDBXZZ-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
193
Page
7
Jun 30/00
32 LANDING GEAR
TMULDBXZZ-T04 LEVEL 3
UFD4200
CROSS SECTION
The automatic selector includes a primary stage which
selects the system.
It also includes a secondary stage used to cut off the
return from the servovalves of the alternate system.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
194
Page
8
Jun 30/00
TMULDBXZZ-P04 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
195
Page
9
Jun 30/00
32 LANDING GEAR
TMULDBXZZ-T05 LEVEL 3
UFD4200
DESCRIPTION
The throttle valve is installed on the green supply
port (A) of the automatic selector.
It decreases the speed of movement of the main slide
valve of the selector when the brake selector valve
is de-energized.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page196
10
Jun 30/00
TMULDBXZZ-P05 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
Page197
11
Jun 30/00
32 LANDING GEAR
IDENTIFICATION
FIN: 2613GM (LH), 2612GM (RH)
IDENTIFICATION
FIN: 15GG (WHEEL 1), 17GG (WHEEL 2), 16GG (WHEEL 3),
18GG (WHEEL 4)
LOCATION
ZONE: 731, 741
DESCRIPTION
There are four servovalves, one for each brake.
The brake servovalve supplies a pressure inversely
proportional to the current which passes through the
control coil used.
TMULDBXZZ-T06 LEVEL 3
UFD4200
DESCRIPTION
The manifold is equipped with two servovalves, two
pressure transducers, two hydraulic fuses and one
filter on the supply line of the manifold.
LOCATION
ZONE: 731, 741
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page198
12
Jun 30/00
TMULDBXZZ-P06 LEVEL 3
UFD4200
32 LANDING GEAR
NORMAL BRAKING COMPONENTS - MANIFOLD NORMAL BRAKE SERVOVALVES - NORMAL BRAKE SERVOVALVES
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page199
13
Jun 30/00
32 LANDING GEAR
TMULDBXZZ-T07 LEVEL 3
UFD4200
CROSS SECTION
The current of the control coil in use (either system
1 or 2) moves a flapper located between two jets.
This modifies the sections of the fluid passage at the
jets, and consequently the pressure in the control
chambers of the slide valve.
With zero current, the supplied pressure is equal to
the pressure supplied to the servovalve.
If there is no supply pressure, the servovalve connects
the brake to the reservoir return system.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page200
14
Jun 30/00
TMULDBXZZ-P07 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
Page201
15
Jun 30/00
32 LANDING GEAR
PRESSURE TRANSDUCERS
HYDRAULIC FUSES
IDENTIFICATION
FIN: 11GG (WHEEL 1), 13GG (WHEEL 2),
12GG (WHEEL 3), 14GG (WHEEL 4)
IDENTIFICATION
FIN: 2618GM (WHEEL 1), 2616GM (WHEEL 2),
2617GM (WHEEL 3), 2619GM (WHEEL 4)
LOCATION
ZONE: 731, 741
LOCATION
ZONE: 731, 741
DESCRIPTION
The normal brake pressure transducers are installed
on the manifold of the normal brake servovalve, one
downstream of each servovalve.
The integrated-logic transducer supplies a DC voltage
between 1 and 5V for a pressure between 0 and 3000 psi
(206 bars).
The zero has been shifted to enable BITE testing.
DESCRIPTION
A hydraulic fuse, installed between the brake
servovalve and the brake, stops the flow in the line
if the leakage exceeds 1.32 U.S. gal/mn (5 l/mn).
The valve is reset when you depressurize the hydraulic
systems and when you open the bleed screw.
TMULDBXZZ-T08 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page202
16
Jun 30/00
TMULDBXZZ-P08 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
Page203
17
Jun 30/00
32 LANDING GEAR
TMULDBXZZ-T09 LEVEL 3
UFD4200
DESCRIPTION
The brake pedal transmitter unit transforms the pedal
input into four identical electrical voltages per side
which are sent to the BSCU for selector valve
energization.
Any overtravel is absorbed by the spring rods which
actuate the levers of the transmitter unit.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page204
18
Jun 30/00
TMULDBXZZ-P09 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
Page205
19
Jun 30/00
32 LANDING GEAR
TMULDBXZZ-T10 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page206
20
Jun 30/00
TMULDBXZZ-P10 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
Page207
21
Jun 30/00
32 LANDING GEAR
TMULDBXZZ LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
Page208
22
Jun 30/00
32 LANDING GEAR
32 - LANDING GEAR
32-43-00 WHEELS AND BRAKES - ALTERNATE
BRAKING COMPONENTS
TMULDDX09 LEVEL 3
UFD4200
CONTENTS:
Hydraulic Reservoir
Master Cylinders
Alternate Dual Valve
Manifold Brake Alternate Servovalves
Alternate Servovalves
Braking Pressure Transducers
Hydraulic Fuses
Hydraulic Pressure Transducer
Relief Valve
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
209
Page
1
Aug 31/00
32 LANDING GEAR
HYDRAULIC RESERVOIR
MASTER CYLINDERS
IDENTIFICATION
FIN: 2624GM
IDENTIFICATION
FIN: 2625GM (LH), 2626GM (RH)
LOCATION
ZONE: 122
LOCATION
ZONE: 122
DESCRIPTION
The brake control hydraulic reservoir supplies the
master cylinders of the alternate system with hydraulic
fluid to permit volume changes of the fluid and
compensate possible leakages.
The reservoir is slightly pressurized by a spring
loaded piston: 22 psi (1,5 bar).
Capacity: 3.05 cu. in. (50 cm3).
DESCRIPTION
There is one master cylinder for the LH side and one
for the RH side.
They are used to control the distribution dual valve
of the alternate brake system by displacement of fluid.
They also give artificial feel at the pedals by means
of an internal spring and the load resulting from the
pressure increase in the control circuit.
TMULDDX09-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
210
Page
2
Aug 31/00
TMULDDX09-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
211
Page
3
Aug 31/00
32 LANDING GEAR
TMULDDX09-T02 LEVEL 3
UFD4200
DESCRIPTION
The alternate dual valve includes two independent
pressure-reducing valves, one for each main gear.
A master cylinder operates each valve.
A transparent drain tube connected to the cover of the
dual valve is used to check for possible presence of
water.
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
212
Page
4
Aug 31/00
TMULDDX09-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
213
Page
5
Aug 31/00
32 LANDING GEAR
TMULDDX09-T03 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
214
Page
6
Aug 31/00
TMULDDX09-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
215
Page
7
Aug 31/00
32 LANDING GEAR
TMULDDX09-T04 LEVEL 3
UFD4200
DESCRIPTION
The manifold is equipped with two servovalves, two
hydraulic fuses and one filter on the supply line of
the manifold.
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
216
Page
8
Aug 31/00
TMULDDX09-P04 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
217
Page
9
Aug 31/00
32 LANDING GEAR
TMULDDX09-T05 LEVEL 3
UFD4200
DESCRIPTION
Only one coil is used for anti-skid control by system
1 and 2 (pins E and F are not used).
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
Page218
10
Aug 31/00
TMULDDX09-P05 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
Page219
11
Aug 31/00
32 LANDING GEAR
TMULDDX09-T06 LEVEL 3
UFD4200
DESCRIPTION
Two pressure transducers measure the pressure supplied
either by the alternate brake distribution dual valve
or the parking brake pressure limiter.
The pressure transducers send the information to the
Brake Yellow Pressure Triple Indicator in the cockpit.
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
Page220
12
Aug 31/00
TMULDDX09-P06 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
Page221
13
Aug 31/00
32 LANDING GEAR
TMULDDX09-T07 LEVEL 3
UFD4200
DESCRIPTION
A hydraulic fuse, installed between the brake
servovalve and the brake, stops the flow in the line
if the leakage exceeds 1.32 U.S. gal/mn (5 l/mn).
The valve is reset when you depressurize the hydraulic
reservoir and when you open the bleed screw.
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
Page222
14
Aug 31/00
TMULDDX09-P07 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
Page223
15
Aug 31/00
32 LANDING GEAR
RELIEF VALVE
IDENTIFICATION
FIN: 3068GN
IDENTIFICATION
FIN: 3067GM
LOCATION
ZONE: 148
LOCATION
ZONE: 148
DESCRIPTION
The transducer is made of two main sections. The first
section has the pressure-sensing element. It includes
a diaphragm which is under hydraulic pressure. The
diaphragm causes a piezoresistive sensing element to
operate on the Wheatstone bridge principle, according
to the pressure applied.
The transducer is a sealed unit and no maintenance is
necessary or possible.
The pressure transducer sends hydraulic pressure data
to the Brake Yellow Pressure Triple Indicator for
accumulator pressure indication.
DESCRIPTION
The hydraulic thermal-pressure relief valve is
calibrated at 3436 psi (237 bars).
It can be manually activated for accumulator
depressurization.
TMULDDX09-T08 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
Page224
16
Aug 31/00
TMULDDX09-P08 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
Page225
17
Aug 31/00
32 LANDING GEAR
TMULDDX09 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
Page226
18
Aug 31/00
32 LANDING GEAR
32 - LANDING GEAR
32-45-00 WHEELS AND BRAKES - PARKING
BRAKE COMPONENTS
TMULDEX02 LEVEL 3
UFD4200
CONTENTS:
Accumulator
Pressure Gage
Charging Valve
Parking Brake Electrical Control Valve
Parking Brake Operated Valve
Dual Shuttle Valve
EFFECTIVITY
EFFECTIVITY
ALL
32-45-00
Page
227
Page
1
Oct 31/99
32 LANDING GEAR
CHARGING VALVE
IDENTIFICATION
FIN: 2582GM
IDENTIFICATION
FIN: 2586GM
LOCATION
ZONE: 148
LOCATION
ZONE: 148
DESCRIPTION
The brake yellow pressure accumulator is either
pressurized by the hydraulic system or by the yellow
electric pump.
Filling pressure:
- 1450 psi at 60F (100 bars at 20C).
Volume of fluid:
- 164.8 cu.in. (2700 cm3), filled with nitrogen.
DESCRIPTION
The accumulator is equipped with a charging valve for
nitrogen refilling if necessary.
PRESSURE GAGE
IDENTIFICATION
FIN: 2585GM
TMULDEX02-T01 LEVEL 3
UFD4200
LOCATION
ZONE: 148
DESCRIPTION
The pressure
pressure.
gage
EFFECTIVITY
EFFECTIVITY
ALL
indicates
the
actual
nitrogen
32-45-00
Page
228
Page
2
Oct 31/99
TMULDEX02-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-45-00
Page
229
Page
3
Oct 31/99
32 LANDING GEAR
TMULDEX02-T02 LEVEL 3
UFD4200
THERMAL FUSES
A thermal fuse protects each linear transmitter coil
from overheat.
It is possible to reset the fuse after removal of the
transparent cover.
DESICCANT CARTRIDGE
A replaceable desiccant cartridge indicates the
humidity conditions. The cartridge is blue and becomes
pink when in contact with water.
EFFECTIVITY
EFFECTIVITY
ALL
32-45-00
Page
230
Page
4
Oct 31/99
TMULDEX02-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-45-00
Page
231
Page
5
Oct 31/99
32 LANDING GEAR
TMULDEX02-T03 LEVEL 3
UFD4200
DESCRIPTION
The parking brake operated valve, installed between
the brake automatic selector and the dual valve, shuts
off supply to the alternate brake system to prevent
leakage through the distribution dual valve.
Parking brake pressure is delivered through port C.
Pressure from the automatic selector is delivered
through port A.
Port B is connected to the dual valve.
EFFECTIVITY
EFFECTIVITY
ALL
32-45-00
Page
232
Page
6
Oct 31/99
TMULDEX02-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-45-00
Page
233
Page
7
Oct 31/99
32 LANDING GEAR
TMULDEX02-T04 LEVEL 3
UFD4200
DESCRIPTION
The dual shuttle valve includes two valves, one for
each main gear, installed in a single block adjacent
to the alternate brake distribution dual valve.
Each valve is used to select either the alternate
system (E or/and D) (spring biased position) or the
parking brake system (A), to supply the corresponding
gear (C or/and B).
EFFECTIVITY
EFFECTIVITY
ALL
32-45-00
Page
234
Page
8
Oct 31/99
TMULDEX02-P04 LEVEL 3
UFD4200
32 LANDING GEAR
32-45-00
Page
235
Page
9
Oct 31/99
32 LANDING GEAR
TMULDEX02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-45-00
Page
Page236
10
Oct 31/99
32 LANDING GEAR
32 - LANDING GEAR
32-40-00 WHEEL AND BRAKE COMPONENTS
TMULDJX04 LEVEL 3
UFD4200
CONTENTS:
Main Landing Gear Wheels
Main Landing Gear Tires
Carbon Brakes
Tachometers
Main Landing Gear Drive Tachometers
Axle Wheel Adapter Sleeves
Nose Landing Gear Wheels
Nose Landing Gear Tires
Nose Landing Gear Axle Sleeves
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
237
Page
1
Oct 31/97
32 LANDING GEAR
IDENTIFICATION
FIN: 2651GM (WHEEL 1), 2649GM (WHEEL 2),
2652GM (WHEEL 3), 2650GM (WHEEL 4)
IDENTIFICATION
FIN: 2647GM (WHEEL 1), 2645GM (WHEEL 2),
2648GM (WHEEL 3), 2646GM (WHEEL 4)
LOCATION
ZONE: 731 (WHEEL 1 & 2), 741 (WHEEL 3 & 4)
LOCATION
ZONE: 731 (WHEEL 1 & 2), 741 (WHEEL 3 & 4)
DESCRIPTION
The MLG wheels consist of two forged light alloy
half-wheels attached together with high-tensile steel
bolts and self-locking nuts.
An O-ring seal is put between the two half-wheels.
The wheel is equipped with :
- one standard inflating valve,
- one bolt which you can replace by a valve with
an incorporated pressure indicator (PSI type).
- six fuse plugs deflate the tire in the event
of excessive brake overheat and thus protect
against tire burst because of excessive
pressure.
Melting point of the fuse plug:
first set, inside keys, 300C (572F),
second set, on wheel web, 183C (361F).
TMULDJX04-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
238
Page
2
Oct 31/97
TMULDJX04-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
239
Page
3
Oct 31/97
32 LANDING GEAR
TMULDJX04-T02 LEVEL 3
UFD4200
DESCRIPTION
Each brake includes:
- a piston housing,
- a carbon heat pack.
The piston housing has:
- two independent hydraulic sets (normal and
alternate) of 7 pistons,
- a bleeder for each of the two systems,
- a half self-sealing coupling for each system,
- a torque tube,
- two wear indicators for the heat pack,
- a brake temperature sensor.
Three bolts and nine pins attach the brake to the axle
flange of the landing gear.
Brake weight: 67 kg (147 lb).
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
240
Page
4
Oct 31/97
TMULDJX04-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
241
Page
5
Oct 31/97
32 LANDING GEAR
TMULDJX04-T03 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
242
Page
6
Oct 31/97
TMULDJX04-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
243
Page
7
Oct 31/97
32 LANDING GEAR
TACHOMETERS
IDENTIFICATION
FIN: 19GG (WHEEL 1), 21GG (WHEEL 2),
20GG (WHEEL 3), 22GG (WHEEL 4)
IDENTIFICATION
FIN: 2681GM (WHEEL 1), 2680GM (WHEEL 2),
2679GM (WHEEL 3), 2678GM (WHEEL 4)
LOCATION
ZONE: 731 (WHEEL 1 & 2), 741 (WHEEL 3 & 4)
LOCATION
ZONE: 731 (WHEEL 1 & 2), 741 (WHEEL 3 & 4)
DESCRIPTION
The tachometers send wheel speed information.
Each tachometer has two 200 tooth rings:
- 1 stationary ring associated to a coil and a
permanent magnet,
- 1 ring driven by the wheel.
The rotation of the wheel causes variations in the
induction frequency which are proportional to the
angular speed (Frequency = 200 x angular speed).
The variable frequency voltage supplied by the
tachometer is sent to the Braking/Steering Control
Unit (BSCU).
TMULDJX04-T04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
244
Page
8
Oct 31/97
TMULDJX04-P04 LEVEL 3
UFD4200
32 LANDING GEAR
WHEEL AND BRAKE COMPONENTS - TACHOMETERS - MLG DRIVE TACHOMETERS - AXLE SLEEVES
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
245
Page
9
Oct 31/97
32 LANDING GEAR
IDENTIFICATION
FIN: 2659GM (WHEEL 9), 2660GM (WHEEL 10)
IDENTIFICATION
FIN: 2635GM (WHEEL 9), 2636GM (WHEEL 10)
LOCATION
ZONE: 711
LOCATION
ZONE: 711
DESCRIPTION
The wheels consist of two forged half-wheels made of
light alloy.
They are attached together with bolts and self-locking
nuts.
An O-ring seal is put between the two half-wheels.
The wheels have 3 ports which are equipped with :
- one standard inflating valve,
- one overpressure relief valve,
- one bolt which you can replace by a valve with
an incorporated pressure indicator (PSI type).
Wheel weight: 15.95 kg (35 lbs), including hub cap.
TMULDJX04-T05 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
Page246
10
Oct 31/97
TMULDJX04-P05 LEVEL 3
UFD4200
32 LANDING GEAR
32-40-00
Page
Page247
11
Oct 31/97
32 LANDING GEAR
TMULDJX04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-40-00
Page
Page248
12
Oct 31/97
32 LANDING GEAR
32 - LANDING GEAR
32-47-00 WHEELS AND BRAKES - BRAKE
TEMPERATURE SYSTEM COMPONENTS
TMULDIX01 LEVEL 3
UFD4200
CONTENTS:
BTMUs
Temperature Sensors
EFFECTIVITY
EFFECTIVITY
ALL
32-47-00
Page
249
Page
1
Apr 30/96
32 LANDING GEAR
BTMUs
TEMPERATURE SENSORS
IDENTIFICATION
FIN: 3GW, 2GW
IDENTIFICATION
FIN: 7GW, 5GW, 4GW, 6GW
LOCALISATION
ZONE: 731, 741
LOCALISATION
ZONE: 731, 731, 741, 741
COMPONENT DESCRIPTION
The Brake Temperature Monitoring Unit (BTMU) is
equipped with two printed circuits required to:
- process the data from the temperature sensor,
- compensate the thermocouple cold junction.
There is one BTMU per main gear.
COMPONENT DESCRIPTION
Each brake is equipped with a temperature sensor which
is of the chromel-alumel thermocouple type.
It delivers a voltage which is proportional to the
temperature difference between the cold junction and
the hot junction.
TMULDIX01-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-47-00
Page
250
Page
2
Apr 30/96
TMULDIX01-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-47-00
Page
251
Page
3
Apr 30/96
32 LANDING GEAR
TMULDIX01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-47-00
Page
252
Page
4
Apr 30/96
32 LANDING GEAR
32 - LANDING GEAR
32-48-00 WHEELS AND BRAKES - BRAKE
COOLING SYSTEM COMPONENTS
TMULDFX01 LEVEL 3
UFD4200
CONTENTS
Fan Motor
Impeller
EFFECTIVITY
EFFECTIVITY
ALL
32-48-00
Page
253
Page
1
Jun 30/96
32 LANDING GEAR
FAN MOTOR
IMPELLER
IDENTIFICATION
FIN: 7GS (WHEEL 1), 9GS (WHEEL 2), 8GS (WHEEL 3),
10GS (WHEEL 4)
IDENTIFICATION
FIN: 2789GM (WHEEL 1), 2790GM (WHEEL 2),
2791GM (WHEEL 3), 2792GM (WHEEL 4)
LOCATION
ZONE: 731 (WHEEL 1 & 2), 741 (WHEEL 3 & 4)
LOCATION
ZONE: 731 (WHEEL 1 & 2), 741 (WHEEL 3 & 4)
DESCRIPTION
The three phase fan motor is installed in the wheel
axle, where an adaptor assembly holds it in position.
Note that the tachometer drive shaft passes through
the hollow shaft of the fan motor and the shroud drives
the tachometer.
DESCRIPTION
The impeller creates a flow of air from the heat pack
to the exterior through the debris guard.
TMULDFX01-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-48-00
Page
254
Page
2
Jun 30/96
TMULDFX01-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-48-00
Page
255
Page
3
Jun 30/96
32 LANDING GEAR
TMULDFX01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-48-00
Page
256
Page
4
Jun 30/96
32 LANDING GEAR
32 - LANDING GEAR
32-51-00 NOSE WHEEL STEERING SYSTEM
PRESENTATION
TMULD1003 LEVEL 1
UFD4200
CONTENTS:
Controls
Pedals
Disconnect Pushbutton
BSCU
Activation
Towing Control Lever
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
257
Page
1
Oct 31/99
32 LANDING GEAR
ACTIVATION
Steering signals are sent to the hydraulic block when
the arming conditions are met.
The steering hydraulic block is powered by green
pressure if the nose gear doors are closed.
NOTE: Steering is lost after gear gravity extension
as the doors remain open.
TOWING CONTROL LEVER
A lever on the towing electrical box located on the
nose landing gear enables the steering system to be
deactivated for towing purposes.
With the control lever in towing position:
- The maximum towing angle is 95,
- The ECAM MEMO DISPLAY shows N WHEEL STEER
DISC in green, which changes to amber if
one engine is running.
DISCONNECT PUSHBUTTON
TMULD1003-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
258
Page
2
Oct 31/99
TMULD1003-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-51-00
Page
259
Page
3
Oct 31/99
32 LANDING GEAR
SELF EXAMINATION
What is the
obtained by
A -
B -
C -
TMULD1003 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
260
Page
4
Oct 31/99
32 LANDING GEAR
32 - LANDING GEAR
32-51-00 NOSE WHEEL STEERING SYSTEM
DESCRIPTION/OPERATION
TMULDGS04 LEVEL 3
UFD4200
CONTENTS:
Rotating Joint
Selector Valve
Check Valve/Filter
Servovalve
Adjustable Diaphragm
Check Valves
Bypass Valve
Anti-Shimmy Valves
Steering Actuator
Accumulator
Bleed Screw
Operation
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
261
Page
1
Aug 31/00
32 LANDING GEAR
CHECK VALVES
SELECTOR VALVE
When the selector valve is energized the pressure is
applied to the servovalve via the slaved valve.
BYPASS VALVE
The bypass valve interconnects the two chambers of the steering
actuator in the event of hydraulic system depressurization.
The bypass valve opens if the pressure exceeds 273 bars
(4000 psi).
ANTI-SHIMMY VALVES
CHECK VALVE/FILTER
There is one anti-shimmy valve per steering actuator chamber.
A 40 micron filter and a check valve are installed in
the hydraulic power supply line.
SERVOVALVE
TMULDGS04-T01 LEVEL 3
UFD4200
STEERING ACTUATOR
The steering actuator drives the rotating tube, which
is part of the nose landing gear structure, via a
rack-and-pinion assembly.
ACCUMULATOR
The anti-shimmy accumulator supplies pressurized fluid
in case of cavitation in one of the two chambers of
the steering actuator.
The accumulator can supply fluid pressurized up to 15
bars (220 psi).
BLEED SCREW
A bleed screw allows bleeding and depressurization of
the hydraulic block.
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
262
Page
2
Aug 31/00
TMULDGS04-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-51-00
Page
263
Page
3
Aug 31/00
32 LANDING GEAR
TMULDGS04-T02 LEVEL 3
UFD4200
When the nose gear is extended and the nose gear doors
are closed, the hydraulic block is pressurized.
When the MLG is compressed, both chambers of the
steering actuator are supplied and the nose wheels
servoed to an angle of 0.
Depending on the BSCU reference speed and the nose
wheel steering orders, the nose wheels are steered.
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
264
Page
4
Aug 31/00
TMULDGS04-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-51-00
Page
265
Page
5
Aug 31/00
32 LANDING GEAR
SELF EXAMINATION
What is
A
B
C
TMULDGS04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
266
Page
6
Aug 31/00
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 NOSE WHEEL STEERING ECAM PAGE
PRESENTATION
TMULDB401 LEVEL 1
UFD4200
CONTENTS:
Steering Indication
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
267
Page
1
Nov 30/98
32 LANDING GEAR
TMULDB401-T01 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
268
Page
2
Nov 30/98
TMULDB401-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-42-00
Page
269
Page
3
Nov 30/98
32 LANDING GEAR
TMULDB401 LEVEL 1
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
270
Page
4
Nov 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 NOSE WHEEL STEERING SYSTEM
WARNINGS
TMULDC601 LEVEL 3
UFD4200
CONTENTS:
ANTI SKID/NWS Fault
ANTI SKID/NWS Off
Hyd Sel Fault
BSCU Sys 1 (2) Fault
N.W. Steer Fault
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
271
Page
1
Oct 31/99
TMULDC601-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
272
Page
2
Oct 31/99
32 LANDING GEAR
32 - LANDING GEAR
32-51-00 NOSE WHEEL STEERING SYSTEM
COMPONENTS
TMULDKX02 LEVEL 2
UFD4200
CONTENTS:
Electrical Box
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
273
Page
1
Oct 31/99
32 LANDING GEAR
TMULDKX02-T01 LEVEL 2
UFD4200
DESCRIPTION
The electrical box is used to disengage the steering
control system when the aircraft is being towed. In
the disengaged position the handle must be secured by
a pin.
In addition, a light indicates when the PARKING BRAKE
is set to the "ON" position. A LIGHT TEST pushbutton
allows this light to be tested.
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
274
Page
2
Oct 31/99
TMULDKX02-P01 LEVEL 2
UFD4200
32 LANDING GEAR
32-51-00
Page
275
Page
3
Oct 31/99
32 LANDING GEAR
TMULDKX02 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
276
Page
4
Oct 31/99
32 LANDING GEAR
32 - LANDING GEAR
32-51-00 NOSE WHEEL STEERING SYSTEM
COMPONENTS
TMULDLX02 LEVEL 3
UFD4200
CONTENTS:
BSCU
Handwheel Transmitter Unit
Feedback Sensors
Hydraulic Control Unit
Rotating Joint
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
277
Page
1
Aug 31/00
32 LANDING GEAR
BSCU
IDENTIFICATION
FIN: 10GG
IDENTIFICATION
FIN: 1GC, 2GC
LOCATION
ZONE: 122
LOCATION
ZONE: 211, 212
DESCRIPTION
The Braking and Steering Control Unit (BSCU) consists
of:
- four power supply units grouped two by two,
- two identical sets of three boards which form
the systems 1 and 2, each board is connected
to an On-Board Reprogrammable Module (OBRM),
- a rear interface in the form of two U-shaped
boards (around the connector) comprises the
lightning protection and the switching
assemblies.
DESCRIPTION
Each handwheel activates a transmitter unit with
4 potentiometers.
In addition, it includes a pushbutton switch for the
disconnection of the nose wheel steering control
through the rudder pedals.
TMULDLX02-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
278
Page
2
Aug 31/00
TMULDLX02-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-51-00
Page
279
Page
3
Aug 31/00
32 LANDING GEAR
FEEDBACK SENSORS
IDENTIFICATION
FIN: 3GC, 4GC
IDENTIFICATION
FIN: 6GC
LOCATION
ZONE: 711
LOCATION
ZONE: 711
DESCRIPTION
The nose wheel steering feedback sensor is of the
Rotary Variable Differential Transducer (RVDT) type.
It consists of a reduction gearbox and a sensor box.
The sensor box transmits the rotating tube position
to the sensor box which sends information to the BSCU
for steering position monitoring.
The knob, with an internal lockpin, locks the gearbox
in the neutral position (0 degree) before installation
of the sensor box.
DESCRIPTION
The hydraulic control unit mainly consists of:
- a selector valve,
- a servovalve,
- an accumulator,
- a filter and valves.
It is hydraulically supplied from the nose landing
gear doors close line, through the rotating joint, and
electrically connected to the BSCU.
It supplies the steering cylinders according to the
electrical signals.
TMULDLX02-T02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
280
Page
4
Aug 31/00
TMULDLX02-P02 LEVEL 3
UFD4200
32 LANDING GEAR
NOSE WHEEL STEERING SYSTEM COMPONENTS - FEEDBACK SENSORS - HYDRAULIC CONTROL UNIT
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
281
Page
5
Aug 31/00
32 LANDING GEAR
TMULDLX02-T03 LEVEL 3
UFD4200
DESCRIPTION
The rotating joint mainly consists of:
- a fixed part fitted with a liner and a lever
for the attachment to the aircraft structure,
- a moving part fitted with a shaft and a plate
for the attachment to the NLG leg hinge pin.
It supplies the steering hydraulic control unit when
the leg is downlocked and stops the fluid flow when
the leg is in another position.
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
282
Page
6
Aug 31/00
TMULDLX02-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-51-00
Page
283
Page
7
Aug 31/00
32 LANDING GEAR
TMULDLX02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-51-00
Page
284
Page
8
Aug 31/00
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 BRAKING AND STEERING - BSCU
CONTROL INTERFACES
TMULDGV0C LEVEL 3
UFD4200
CONTENTS:
ADIRUs
SECs
LGCIUs
ELACs
BTMUs
Tachometers
LGCIUs
Pack Controllers
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
285
Page
1
Dec 31/94
32 LANDING GEAR
TACHOMETERS
SECs
LGCIUs
LGCIUs
PACK CONTROLLERS
ELACs
The link between the BSCU and the Elevator Aileron
Computer (ELAC) serves for nose wheel steering purposes
with orders coming from rudder pedals and autopilot.
TMULDGV0C-T01 LEVEL 3
UFD4200
BTMUs
The BSCU changes analog signals from the Brake
Temperature Monitoring Units (BTMUs) into digital ones
for temperature indication on the lower ECAM display
unit.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
286
Page
2
Dec 31/94
TMULDGV0C-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
287
Page
3
Dec 31/94
32 LANDING GEAR
TMULDGV0C LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
288
Page
4
Dec 31/94
32 LANDING GEAR
32 - LANDING GEAR
32-42-00 BRAKING AND STEERING - BSCU
ARCHITECTURE AND MONITORING
INTERFACES
TMULDGUZZ LEVEL 3
UFD4200
CONTENTS:
Architecture
Monitoring
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
289
Page
1
Nov 30/99
32 LANDING GEAR
TMULDGUZZ-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
290
Page
2
Nov 30/99
TMULDGUZZ-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
291
Page
3
Nov 30/99
32 LANDING GEAR
TMULDGUZZ-T02 LEVEL 3
UFD4200
DMU
The Display Management Unit receives maintenance data
for reports used in preventive maintenance. The Display
Management Unit (DMU) is a computer of the Aircraft
Integrated Data System (AIDS)(as an option, AIDS may
not be installed).
FMGC
The BSCU sends 4 availability discretes to the Flight
Management and Guidance Computers (FMGCs). This is to
meet the safety requirements of a category 3B landing.
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
292
Page
4
Nov 30/99
TMULDGUZZ-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-42-00
Page
293
Page
5
Nov 30/99
32 LANDING GEAR
TMULDGUZZ LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-42-00
Page
294
Page
6
Nov 30/99
32 LANDING GEAR
32 - LANDING GEAR
32-49-00 TIRE PRESSURE INDICATING SYSTEM
PRESENTATION
TMULD1Q04 LEVEL 1
UFD4200
CONTENTS:
Function
Description
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-49-00
Page
295
Page
1
Aug 31/97
32 LANDING GEAR
TMULD1Q04-T01 LEVEL 1
UFD4200
DESCRIPTION
The Tire Pressure Indicating System has a sensor and
a transmitter for each wheel, and includes a computer:
the Tire Pressure Indicating Unit (TPIU).
The system includes:
- a sensor which measures the pressure of each
tire,
- a rotating mechanism which transmits the
electrical pressure signal from the wheel to
the wheel axle.It includes a rotating
transformer and an integrated electronic
module,
- a computer TPIU (Tire Pressure Indicating
Unit).
EFFECTIVITY
EFFECTIVITY
ALL
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2
Aug 31/97
TMULD1Q04-P01 LEVEL 1
UFD4200
32 LANDING GEAR
32-49-00
Page
297
Page
3
Aug 31/97
32 LANDING GEAR
SELF EXAMINATION
Tire Pressure Indication displayed ?
a tire and brake indicator.
ECAM.
indication.
TMULD1Q04 LEVEL 1
UFD4200
Where is the
A - On
B - On
C - No
EFFECTIVITY
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Page
4
Aug 31/97
32 LANDING GEAR
32 - LANDING GEAR
32-49-00 TIRE PRESSURE INDICATING SYSTEM
DESCRIPTION/OPERATION
TMULDGQ04 LEVEL 3
UFD4200
CONTENTS:
Purpose
Pressure Transducer
Rotating Mechanism
Electronic Module
Rotating Transformer
Detection Unit
Interfaces
Self Examination
EFFECTIVITY
EFFECTIVITY
ALL
32-49-00
Page
299
Page
1
Dec 31/94
32 LANDING GEAR
ROTATING TRANSFORMER
PRESSURE TRANSDUCER
TMULDGQ04-T01 LEVEL 3
UFD4200
ELECTRONIC MODULE
DETECTION UNIT
INTERFACES
The signal from the Landing Gear Control and Interface
Unit (LGCIU) is used to change the tire pressure
threshold for on ground or in flight warnings.
Note that tire pressure warnings are only memorized
by the BITE when at least one engine is running to
prevent false warnings during wheel change.
EFFECTIVITY
EFFECTIVITY
ALL
32-49-00
Page
300
Page
2
Dec 31/94
TMULDGQ04-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-49-00
Page
301
Page
3
Dec 31/94
32 LANDING GEAR
TMULDGQ04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-49-00
Page
302
Page
4
Dec 31/94
32 LANDING GEAR
32 - LANDING GEAR
32-49-00 TIRE PRESSURE INDICATING SYSTEM
WARNINGS
TMULDBQ04 LEVEL 3
UFD4200
CONTENTS:
Tire Lo Pr
EFFECTIVITY
EFFECTIVITY
ALL
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303
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1
Oct 31/99
TMULDBQ04-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-49-00
Page
304
Page
2
Oct 31/99
32 LANDING GEAR
32 - LANDING GEAR
32-49-00 TIRE PRESSURE INDICATING SYSTEM
COMPONENTS
TMULDHX04 LEVEL 3
UFD4200
CONTENTS:
Tire Pressure Indicating Unit
MLG Transmission Unit
MLG Pressure Transducer
NLG Transmission Unit
NLG Pressure Transducer
EFFECTIVITY
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32-49-00
Page
305
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Apr 30/97
32 LANDING GEAR
TMULDHX04-T01 LEVEL 3
UFD4200
COMPONENT DESCRIPTION
The TPIS detection unit is of the 3 Modular Concept
Unit (MCU) size and is connected to the aircraft wiring
through an ARINC 600 connector, size 1.
The detection unit performs a permanent test which is
only stopped for processing of the following three
functions :
- pressure measurement,
- data distribution,
- maintenance.
EFFECTIVITY
EFFECTIVITY
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32-49-00
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2
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TMULDHX04-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-49-00
Page
307
Page
3
Apr 30/97
32 LANDING GEAR
IDENTIFICATION
FIN: 7GV (WHEEL 1), 9GV (WHEEL 2), 6GV (WHEEL 3),
8GV (WHEEL 4)
IDENTIFICATION
FIN: 13GV (WHEEL 1), 15GV (WHEEL 2), 12GV (WHEEL 3),
14GV (WHEEL 4)
LOCATION
ZONE: 731 (LH MLG), 741 (RH MLG)
LOCATION
ZONE: 731 (LH MLG), 741 (RH MLG)
COMPONENT DESCRIPTION
The rotating mechanism includes :
- a rotating transformer which transmits the
electrical power (3125Hz signal) to supply the
electronic circuits and the pressure transducer
installed on the wheel. It transmits also the
tire pressure value from the wheel to the axle.
The frequency varies from 50kHz to 100kHz.
- an integrated electronic module which amplifies
the DC signal from the pressure transducer and
converts the voltage into frequency (50kHz to
100kHz range), before the signal is applied to
the rotating transformer.
COMPONENT DESCRIPTION
The pressure transducer is installed in a support
attached to the wheel rim. It is of the piezoresistive
strain-gage type. An external voltage source supplies
this transducer which gives a DC signal from 0 to 100mV
in proportion to the pressure. A four-wire, shielded
and twisted cable is connected to the rotating
mechanism.
TMULDHX04-T02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-49-00
Page
308
Page
4
Apr 30/97
TMULDHX04-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-49-00
Page
309
Page
5
Apr 30/97
32 LANDING GEAR
IDENTIFICATION
FIN: 4GV (WHEEL 9), 5GV (WHEEL 10)
IDENTIFICATION
FIN: 10GV (WHEEL 9), 11GV (WHEEL 10)
LOCATION
ZONE: 711
LOCATION
ZONE: 711
TMULDHX04-T03 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-49-00
Page
310
Page
6
Apr 30/97
TMULDHX04-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-49-00
Page
311
Page
7
Apr 30/97
32 LANDING GEAR
TMULDHX04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-49-00
Page
312
Page
8
Apr 30/97
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 MAIN LANDING GEAR SERVICING
TMULDTT05 LEVEL 3
UFD4200
CONTENTS:
Spare Seal Activating Valve
Torque Link Damper
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
313
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1
Oct 31/99
32 LANDING GEAR
TMULDTT05-T01 LEVEL 3
UFD4200
OPERATION
Under normal conditions the valve stem of the spare
activating valve is screwed out, with the ball away
from its seat. Fluid pressure in the shock absorber
is felt equally on both sides of the upper seal in the
lower bearing sub-assembly, but only one side of the
lower seal. Therefore, the lower seal is subjected to
pressure differentials.
If a leak occurs at the lower bearing housing,
indicated by the presence of hydraulic fluid on the
sliding tube, the fault may be expected to be from the
lower seal.
The cap screw, an indicator, must be removed and the
valve stem screwed on to seat the ball. This action
isolates the lower seal from hydraulic pressure, which
effectively stops the leak, and transfers the pressure
differential to the upper seal.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
314
Page
2
Oct 31/99
TMULDTT05-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
315
Page
3
Oct 31/99
32 LANDING GEAR
TMULDTT05-T02 LEVEL 3
UFD4200
DESCRIPTION
The torque link damper is a spring centered, two way
hydraulic unit, which has its own pressurized hydraulic
reservoir. Its function is to decrease the landing
vibrations through the torque links.
The hydraulic fluid contents of the damper are shown
by the extension of the reservoir when it is
pressurized. When the contents are correct, the "FULL"
and "REFILL" level indications are in view.
REPLENISHMENT
The torque link damper must be fitted in accordance
with AMM 12-12-00, but we will consider the general
outline of the task:
- First remove the cap assembly from the check
valve, and bleed screw from the bleed plug,
then attach a hydraulic charging rig, using a
connector, to the check valve.
- Next fit a plastic tube, which is SKYDROL
compatible, to the bleed plug, this is to
collect expelled fluid, so place the free end
of the plastic tube into a suitable container.
- Using the hydraulic rig, apply a pressure of
2.42 to 2.75 bars (35.1 to 39.9 psi) and open
the bleed plug until an air free flow of fluid
is obtained.
- Increase the pressure to between 2.75 and 3.45
bars (39.9 and 50 psi) and close the bleed
plug, the reservoir can should rise slightly
above the "FULL" line (approximately 2.5 mm/0.1
inch).
EFFECTIVITY
EFFECTIVITY
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32-00-00
Page
316
Page
4
Oct 31/99
TMULDTT05-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
317
Page
5
Oct 31/99
32 LANDING GEAR
TMULDTT05 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
318
Page
6
Oct 31/99
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 MAIN LANDING GEAR SHOCK ABSORBER
SERVICING
TMULDGA06 LEVEL 3
UFD4200
CONTENTS:
General
Servicing Procedures
Nitrogen Filling of the MLG Two-Stage Shock Absorber
Pressure/Extension Graph - Values of the Film
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
319
Page
1
Sep 30/98
32 LANDING GEAR
TMULDGA06-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
320
Page
2
Sep 30/98
TMULDGA06-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
321
Page
3
Sep 30/98
32 LANDING GEAR
TMULDGA06-T02 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
322
Page
4
Sep 30/98
TMULDGA06-P02 LEVEL 3
UFD4200
32 LANDING GEAR
SERVICING PROCEDURES
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
323
Page
5
Sep 30/98
32 LANDING GEAR
TMULDGA06-T03 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
324
Page
6
Sep 30/98
TMULDGA06-P03 LEVEL 3
UFD4200
32 LANDING GEAR
SERVICING PROCEDURES - NITROGEN FILLING OF THE MLG TWO-STAGE SHOCK ABSORBER (metric units)
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
325
Page
7
Sep 30/98
32 LANDING GEAR
TMULDGA06-T04 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
326
Page
8
Sep 30/98
TMULDGA06-P04 LEVEL 3
UFD4200
32 LANDING GEAR
SERVICING PROCEDURES - NITROGEN FILLING OF THE MLG TWO-STAGE SHOCK ABSORBER (US units)
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
327
Page
9
Sep 30/98
32 LANDING GEAR
TMULDGA06-T05 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page328
10
Sep 30/98
TMULDGA06-P05 LEVEL 3
UFD4200
32 LANDING GEAR
NITROGEN FILLING OF THE MLG TWO-STAGE SHOCK ABSORBER - SHOCK ABSORBER SCHEMATIC
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page329
11
Sep 30/98
32 LANDING GEAR
TMULDGA06-T06 LEVEL 3
UFD4200
PREPARATION
In the cockpit,
make sure that the landing gear control lever is in
the DOWN position and put a warning notice in position
to tell people not to operate the landing gear.
On the outside,
- make sure that the wheel chocks are in position
on the main landing gear, but do not put a
chock on the nose wheel,
- put a warning notice in position to tell persons
not to operate the landing gear doors,
- put the access platform in position below the
applicable shock absorber.
Before filling with nitrogen, examine the gland housing
of the shock absorber for leakage of hydraulic fluid.
In case of leakage, refer to your AMM to troubleshoot.
PROCEDURE
Measure and record dimension H, H = 89 mm (3.50 in).
Measure and record the temperature of the MLG adjacent
to the top charging valve, T = 10C (50F).
Put the standard charging equipment into position.
On the top charging valve:
- remove the blanking cap,
- on the charging equipment, make sure that the
control valves are closed,
- and connect the filling hose.
Do the same on the bottom charging valve.
CAUTION: MAKE SURE THAT YOU USE A GAGE WITH THE
SPECIFIED PRESSURE RANGE.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page330
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Sep 30/98
32 LANDING GEAR
TMULDGA06-T06 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page331
13
Sep 30/98
32 LANDING GEAR
TMULDGA06-T06 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page332
14
Sep 30/98
32 LANDING GEAR
TMULDGA06-T06 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page333
15
Sep 30/98
32 LANDING GEAR
DIAGRAM 2
(2) PA = 92 bar (1330 psi), T = 11C (52F)
HA = 140 mm (5.5 in)
TMULDGA06-T07 LEVEL 3
UFD4200
DIAGRAM 3
(3) PA = 92 bar (1330 psi)
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page334
16
Sep 30/98
TMULDGA06-P07 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
Page335
17
Sep 30/98
32 LANDING GEAR
TMULDGA06 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
Page336
18
Sep 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-43-00 LOW PRESSURE CIRCUIT FILLING AND
BLEEDING
TMULDGM01 LEVEL 3
UFD4200
CONTENTS:
Precautions
Procedure
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
337
Page
1
Sep 30/98
32 LANDING GEAR
TMULDGM01-T01 LEVEL 3
UFD4200
are depressurized.
Use de-aerated hydraulic fluid.
Disconnect hydraulic hoses from the master
cylinders and connect master cylinders to
hydraulic fluid recovery containers with vinyl
tubing.
Open bleeder J, bleeder K remains closed.
Fill the system with the hand pump until the
fluid flows from the vinyl pipe and there are
no air bubbles. Make sure that the supply
pressure is no more than 15 bars (217.6 psi).
Close the bleeder J, open the bleeder K and
carry out the same procedure.
Connect hydraulic hoses to the base of the left
and the right master cylinders.
Connect the vinyl tubing to the reservoir
bleeder (do not unscrew the bleeder).
Open the bleeders J and K of the dual valve
and continue to fill until the fluid which
flows from the reservoir bleeder is free of
air bubbles.
Check that the reservoir is full (indicator
fully extended to the stop position).
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
338
Page
2
Sep 30/98
TMULDGM01-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-43-00
Page
339
Page
3
Sep 30/98
32 LANDING GEAR
TMULDGM01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-43-00
Page
340
Page
4
Sep 30/98
32 LANDING GEAR
32 - LANDING GEAR
32-41-00 WHEEL AND BRAKE
REMOVAL/INSTALLATION
TMULDVV0B LEVEL 2
UFD4200
CONTENTS:
MLG Wheel and Brake Removal/Installation
NLG Wheel Removal/Installation
EFFECTIVITY
EFFECTIVITY
ALL
32-41-00
Page
341
Page
1
Jul 31/96
32 LANDING GEAR
TMULDVV0B-T01 LEVEL 2
UFD4200
GENERAL
This procedure includes removal/installation
operations of the following components/systems:
- brake fan (optional),
- Tire Pressure Indicating System (optional),
- ABS wheel and brake.
Even if your aircraft is not equipped with one or both
optional systems or this type of wheel and brake, the
procedure remains the same.
PREPARATION
Outside,
- make sure that the landing gear safety devices
are in position,
- as well as the wheel chocks.
In the cockpit,
- open, safety and tag the TPIS and the brake
fans circuit breakers,
- put warning notices on the free fall control
handle and on the landing gear control lever,
- set the parking brake to OFF,
- make sure that the pressure is off and the brake
fan pushbutton is set to off.
Outside again,
- put the jack in position,
- make sure that the dome correctly engages,
- lift the landing gear.
EFFECTIVITY
EFFECTIVITY
ALL
WHEEL REMOVAL
- Fully deflate the tire if it must be changed.
- Remove the guard assembly attached by means of
6 screws.
- Remove the lock wire.
- Insert a tool to lock the impeller and unscrew
the nut.
- Remove the impeller.
- Remove the shroud fixed by 2 screws.
- Disconnect the TPIS sensor connector from the
rotating transformer. Note that the TPIS sensor
must be removed from the wheel if it is changed.
- Remove the "V" clamp and the shroud support.
- Discard the cotterpins, loosen and remove the
2 locking bolts.
- Loosen the wheel nut using the torque adaptor
and remove it.
- Install the propely greased protection tool.
- Using a specific tool, remove the wheel.
BRAKE REMOVAL
- Disconnect the self-sealing couplings.
- Disconnect the brake temperature sensor.
- Using an adaptor, loosen and remove the three
nuts and washers.
- The protective tool being installed on the
axle, remove the wheel.
32-41-00
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342
Page
2
Jul 31/96
32 LANDING GEAR
TMULDVV0B-T01 LEVEL 2
UFD4200
BRAKE INSTALLATION
- Remove the protective tool, clean and grease
the axle.
- The protective tool being fitted, install the
brake unit.
- Make sure that the studs engage correctly on
the axle.
- Install the 3 washers and nuts.
- Adjust the torquemeter value and torque the 3
nuts.
- Connect the brake temperature sensor.
- Reconnect the self-sealing couplings.
- Remove the protection devices.
WHEEL INSTALLATION
- Make sure that the driving keys on the brake
rotor are correctly aligned.
- The axle protective tool being fitted, install
the wheel with the tool.
- Remove the protection device.
- Install the axle nut.
- Adjust the torque meter to the pre-torque value
and apply it to the nut while turning the wheel.
- Prevent the rotation of the wheel and loosen
the nut.
- Adjust the torque meter to the torque value.
- Torque the axle nut.
- Tighten it until the holes in the nut are
aligned with the holes in the axle.
EFFECTIVITY
EFFECTIVITY
ALL
32-41-00
Page
343
Page
3
Jul 31/96
32 LANDING GEAR
TMULDVV0B-T01 LEVEL 2
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-41-00
Page
344
Page
4
Jul 31/96
32 LANDING GEAR
TMULDVV0B-T01 LEVEL 2
UFD4200
PREPARATION
Outside,
- make sure that the safety locks and wheel chocks
are in position on the landing gear.
In the cockpit,
- open, safety and tag the TPIS circuit breaker,
- put warning notices on the free fall and landing
gear control handles,
- select the parking brake OFF.
Outside again,
- put the jack in position,
- make sure that the dome correctly engages,
- lift the landing gear
- fully deflate the tire.
WHEEL REMOVAL
- Cut and remove the lock wire.
- Remove the 3 srews and washers and remove the
hubcap.
- Remove the grommet and disconnect the TPIS
sensor plug from the rotating transducer. Note
that the sensor has to be removed from the
wheel and refitted on the new wheel.
- Remove and discard the cotterpins.
- Remove the 2 locking nuts.
- Remove the axle nut with the torque adaptor.
- Install the properly greased protection tool.
- Remove the wheel.
- Attach a correctly filled-in label on it.
EFFECTIVITY
EFFECTIVITY
ALL
WHEEL INSTALLATION
- Install the protection tool if removed.
- Correctly grease the axle.
- Install the wheel.
- Remove the protection tool.
- Install the nut.
- Adjust the torque meter to the pre-torque value
and apply it to the nut while turning the wheel.
- Prevent the wheel from rotating and loosen the
nut.
- Adjust the torque meter to the correct value.
- Torque the nut.
- Tighten until the locking bolt holes are
aligned.
- Install the locking bolt with the head of the
screw facing the axle.
- Fit the washers and nuts.
- Safety the locking nuts with split pins.
- Connect the TPIS sensor to the rotating
transducer.
- Re-install the grommet.
- Put the hubcap in position.
- Install the 3 washers and screws.
- Safety the 3 srews with lockwire.
32-41-00
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345
Page
5
Jul 31/96
32 LANDING GEAR
TMULDVV0B-T01 LEVEL 2
UFD4200
CLOSE-UP
Outside,
- make sure that the working area is clean,
- lower the gear, the tire pressure being
previously checked and ajusted,
- carefully remove the jack from the dome,
- put the chocks back in position.
In the cockpit,
- remove the tag and close the TPIS circuit
breaker,
- remove the safety warnings,
- select the WHEEL ECAM page,
- check the pressure for correct indication.
EFFECTIVITY
EFFECTIVITY
ALL
32-41-00
Page
346
Page
6
Jul 31/96
32 LANDING GEAR
32 - LANDING GEAR
32-00-00 CFDS SPECIFIC PAGE PRESENTATION
TMULDGRZZ LEVEL 3
UFD4200
CONTENTS:
LGCIU 1
BSCU A
TPIS
EFFECTIVITY
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32-00-00
Page
347
Page
1
Aug 31/00
32 LANDING GEAR
GENERAL
LGCIU 1
TMULDGRZZ-T01 LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
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348
Page
2
Aug 31/00
TMULDGRZZ-P01 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
349
Page
3
Aug 31/00
32 LANDING GEAR
Displayed data
- SELV ORDER = selector valve status (OPEN or
CLOSED).
- SSV CURRENT = servovalve current comprised
between -10mA and +10mA.
- STEER ORDER = commanded steering angle.
- CAPT ANGLE = CAPT steering handwheel angle.
- FO
ANGLE = F/O steering handwheel angle.
- PEDAL ANGLE = ELAC angle.
- NWS ANGLE3GC= RVDT COM angle.
- SSV SPOOL
= LVDT spool position comprised
between -0.6 mm and +0.6 mm.
The REFRESH key is used to refresh the values of the
nose wheel steering parameters, as required.
TMULDGRZZ-T02 LEVEL 3
UFD4200
STEERING DATA
STEERING DATA function displays in real time and clear
language some parameters of the nose wheel steering
system.
This
function
allows
any
possible
malfunctioning of this system to be identified in case
of a non axial roll-out.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
350
Page
4
Aug 31/00
TMULDGRZZ-P02 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
351
Page
5
Aug 31/00
32 LANDING GEAR
TMULDGRZZ-T03 LEVEL 3
UFD4200
GROUND FAULTS
This mode gives all class 1, 2 and 3 faults that have
occured on the ground with a memory capacity of 3
faults maximum during the last 64 flights.
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
352
Page
6
Aug 31/00
TMULDGRZZ-P03 LEVEL 3
UFD4200
32 LANDING GEAR
32-00-00
Page
353
Page
7
Aug 31/00
32 LANDING GEAR
TMULDGRZZ LEVEL 3
UFD4200
EFFECTIVITY
EFFECTIVITY
ALL
32-00-00
Page
354
Page
8
Aug 31/00