ELSA 2 Training Presentation

ELSA 2 Training Presentation
August 2007
ELSA2 Training Presentation
1
August 2007
2
August 2007
Main Components
Housing
Pad
Slide pins
Carrier
Bridge
Pad strap
3
August 2007
How it works
Exploded View - Typical ELSA2 Axial Brake Assembly
1 BRIDGE
2 CARRIER
3 PAD
4 PAD SPRING
5 SCREW ( Pad retaining plate)
6 PAD RETAINING PLATE
7 PISTON HEAD
8 PISTON DUST EXCLUDER
9 SCREW ( Piston housing assembly) X8
10 PISTON HOUSING ASSEMBLY
11 GASKET
12 GUIDE SLEEVE DUST EXCLUDER
13 GUIDE SLEEVE EXCLUDER RETAINER
14 GUIDE SLEEVE BUSH - OVAL
15 VISUAL WEAR INDICATOR ( where
applicable)
16 GUIDE SLEEVE BUSH - ROUND
17 MANUAL ADJUSTER STEM
18 HOUSING
19 ROLLER
20 HALF BEARING
21 OPERATING SHAFT
22 NEEDLE BEARING
23 SADDLE ( Half bearing)
24 GUIDE SLEEVE - LONG
25 SCREW ( Guide sleeve long)
26 GUIDE SLEEVE - SHORT
27 SCREW ( Guide sleeve short)
28 END CAP
29 BRIDGE SCREW X4
30 SEAL ( Actuator)
31 SEAL ( Manual adjuster stem)
32 CAP RETAINER ( Manual adjuster stem)
33 CAP ( Manual adjuster stem)
34 IDENTIFICATION DISC ( where
applicable)
50 PWWI ( where applicable)
51 BLANKING PLUG ( where applicable)
52 SCREW
4
August 2007
How it works
Exploded View ELSA2 Typical Radial Brake Assembly
1 BRIDGE
2 CARRIER
3 PAD
4 PAD SPRING
5 SCREW ( Pad retaining plate)
6 PAD RETAINING PLATE
7 PISTON HEAD
8 PISTON DUST EXCLUDER
9 SCREW ( Piston housing assembly) X8
10 PISTON HOUSING ASSEMBLY
11 GASKET
12 GUIDE SLEEVE DUST EXCLUDER
13 GUIDE SLEEVE EXCLUDER RETAINER
15 VISUAL WEAR INDICATOR ( where
applicable)
18 HOUSING
19 ROLLER
20 HALF BEARING
21 OPERATING SHAFT
22 NEEDLE BEARING
23 SADDLE ( Half bearing)
28 END CAP
29 BRIDGE SCREW X4
30 SEAL ( Actuator)
31 SEAL ( Manual adjuster stem)
32 CAP RETAINER ( Manual adjuster stem)
33 CAP ( Manual adjuster stem)
34 IDENTIFICATION DISC ( where
applicable)
50 PWWI ( where applicable)
51 BLANKING PLUG ( where applicable)
52 SCREW
5
August 2007
How it works
Section View - (Typical Brake Assembly)
DESCRIPTION
1 BRIDGE
2 CARRIER
3 PAD
12 GUIDE SLEEVE DUST

EXCLUDER
18 HOUSING
21 OPERATING SHAFT
28 END CAP
33 ADJUSTER DUST CAP
46 BALL ENDED PIN
6
August 2007
How it works
Section View - Typical Housing Assembly
7
August 2007
How it works
Section View - Typical Housing Assembly
8
August 2007
How it works
Section View Wear Sensor Housing
DESCRIPTION
31 ADJUSTER SEAL
33 ADJUSTER DUST CAP
35 CWS ( Wear Sensor/Switch -

where applicable)
49 WEAR SENSOR ARM

( Wear Sensor Shaft)
9
August 2007
How it works
DVD film show
10
August 2007
Disc Brake Service Procedure

Maintenance Manual no. MM-1130
ELSA2 Reaction Beam Air Disc Brake
11
August 2007
Preventive Maintenance Servicing
Servicing
There is no routine maintenance of the caliper required, however it is
important periodic inspections are carried out.
Every 3 months or 20,000 Km.

A visual assessment of pad life remaining should be made.
Brake pads should be replaced when the lining thickness has worn to 5.0mm.
Visually inspect the general condition of the brake assembly including all the
excluders for damage or corrosion. If there is any doubt in the suitability for
further service replace/rectify.
12
August 2007
Preventative maintenance - (contd)

Every 12 months
Inspect the guide sleeve and piston excluders and ensure they are undamaged
and securely located.
If damaged replace in accordance with the Maintenance Manual
Check the housing assembly slides easily on the guide sleeves secured to the
carrier.
If the housing does not slide easily follow procedure in Maintenance Manual
13
August 2007
Operational functional checks
Automatic adjuster check
Guide Pin sliding check
Guide sleeve pin/bush wear check
Pad wear
14
August 2007

Adjust
Automatic adjuster check

Procedure
Set an increased pad to rotor clearance by de-adjusting the brake

one turn of the adjuster stem or a measured gap of approximately
2-3 mm between the pad and the rotor. De-Adjust
Operate the service brake several times with approximately 1 to 2

bar air pressure.
Observe the direction of rotation of the ring wrench. This should

be in a clockwise direction viewed from the air chamber side.
De-Adjust
NOTE: As the number of brake applications increase, the

movement of the ring wrench will become smaller.
Possible faults:
- Ring wrench does not turn
- Ring wrench turns backwards and forwards. Adjust
If any of the above faults arise, the housing assembly must be

replaced
15
August 2007

Guide Pin action check
Checking the Sliding action of the housing
Remove pads
Move the housing backwards and forwards in the direction of

the arrow, as shown.
It must be possible to push/pull the housing easily by hand.
NOTE: Be careful not to damage the guide sleeve

excluders when sliding the housing.
16
August 2007

Checking Guide Pin Bush Wear
Remove the pads .

Fit the ArvinMeritor service tool MST 1017 to the pad MST 1017
retaining plate screw hole in the correct position The
slot in the tool must be parallel to the rotor.
Lock the tool in position with the locknut
Position the caliper in the new pad condition
CAUTION:
Take care not to trap fingers whilst sliding the
brake.
17
August 2007

Mount a dial gauge in a suitable position on the vehicle hub

and set against the service tool
Ensure the hub cannot rotate
Set the dial gauge to zero.
Fit a torque wrench to the tool in the position
Apply the torque wrench in the correct direction up to 25Nm

without allowing the caliper to slide and note the dial gauge
reading.
18
August 2007

Remove the torque wrench and fit to the opposite side socket
in the service tool
NOTE: DO NOT RESET THE DIAL GAUGE.
Apply the torque wrench up to 25Nm without allowing the

caliper to slide and note the dial gauge reading.
NOTE: Take care not to disturb the position of the dial

gauge when applying the torque wrench.
Add the two dial gauge readings together to give total free
play measurement.
NOTE: Max acceptable free play measurement is 2.0mm

If this figure is exceeded the guide sleeve pins and
bushes require attention.
19
August 2007

Pad wear
The ELSA2 Air Disc Brake can incorporate a variety of

devices to monitor pad wear.
These can include either, or a combination of:
a) PWWI (Pad Wear Warning Indicator) which is fitted to the

pad/s
b) An electronic CWS - continuous wear sensor or switch

within the brake.
Both options a & b above will illuminate a warning lamp on the Continuous
vehicle instrument panel to indicate that a pad change is
Wear Indicator
required.
Brake pad should be replaced when the lining thickness has

worn to 5 mm.
20
August 2007

Pad wear
Pad Wear Check
Where a visual pad wear indicator is incorporated into the

brake it provides a quick and simple method of assessing
the pad life remaining.
In a new pad condition the end of the indicator stem will

extend past the edge of the housing casting
As the pads wear the length of indicator visible past the
edge of the casting will reduce.
50% 75%
The indicator is incremented with each increment wear wear
equating to a level of pad wear
25% Max
wear wear
CAUTION: You must always renew the brake pads
on both wheels of an axle.
21
August 2007
Service Manual (MM1130) Procedures
Section 3: Pad Replacement
Section 4: CWS (Sensor/Switch) Replacement
Section 5: Brake Replacement
Section 6: Bridge Replacement
Section 7: Housing Replacement
Section 8: Carrier Replacement
Section 9: Piston Dust Excluder Removal and Replacement
Section 10: Visual Pad wear Indicator Replacement
Section 11: Guide Sleeve, Dust Excluder, Retainer & Bushes
22
August 2007
Service Manual Procedures
Section 3: Pad Replacement
Brake pad should be replaced when the lining

thickness has worn to 5.0 mm
Manual setting of brake
To set the correct clearance of the brake, locate a

10mm socket on the adjuster stem and turn it clockwise
viewed from the air chamber side.
Continue to adjust the brake until the pads lightly grip

the rotor. De-adjust the brake by 1/2 a turn of the
spanner. Ensure the disc is free to turn.
23
August 2007
Section 4: CWS (Sensor/Switch) Replacement
Sensor/Switch Removal
Where applicable, remove the electronic pad wear sensor or
switch retaining screw. Carefully lever out the sensor/switch
assembly.
Sensor/Switch Fitment
Clean the sensor/switch access hole and mounting face on the
housing and ensure no debris is allowed to fall into the exposed
aperture into the housing.
Lightly grease the O ring seal on the new electronic pad wear
sensor/switch. Fit the new sensor/switch into the housing,
ensuring,
where applicable, that the sensor stem locates correctly onto
the sensor gearbox in the housing.
Fit the new retaining screw tighten the torque specified.
24
August 2007
Section 5: Brake Replacement
Removal
Cover the exposed air chamber mounting aperture with adhesive
tape to prevent debris etc. entering the housing.
NOTE: The caliper assembly is heavy, approximately 50kg
Replacement
Remove the adhesive tape from the air chamber mounting
aperture.
Lightly grease the operating shaft pocket with the appropriate

grease.
WARNING
Only use the grease supplied with replacement components/kits.
Under no circumstance should any other type of grease be used.
Initially tighten the 2 nuts to a pre-torque of 80 -100 Nm,

(this ensures the actuator seals and does not distort).
Apply a final torque of 180 - 210 Nm
25
August 2007
Section 6: Bridge Replacement
Removing the Bridge

Support the bridge by hand and loosen the 4 bridge
screws.
Remove and discard these screws (they are not
reusable).
Carefully remove the bridge.
NOTE: Ensure the housing does not slide off the guide
sleeves.
Ensure that the mating surface of the housing is clean.
Check the guide sleeve dust excluder for signs of

damage and secure location
Replace if in any doubt
Pay special attention for correct location
26
August 2007
Section 7: Housing Replacement
Carefully slide the housing off the guide sleeves which are
secured to the carrier
It is advisable to retain the visual wear indicator and spring,

where applicable, in position before removing the housing
This prevents the spring load from ejecting the indicator as
the housing is removed.
Ensure the visual wear indicator is not damaged.
Remove the visual wear indicator and spring from the

housing and place to one side for reassembly.
Clean and inspect the carrier for signs of damage or wear

paying particular attention to the pad abutment areas and
guide sleeves
If any doubt exists as to the suitability for further service

replace with new guide sleeves and if necessary a new
carrier.
27
August 2007
Section 7: Housing Replacement (contd)
Apply grease to the guide sleeve and housing guide sleeve

bores.
Fit the Visual wear indicator and spring, where applicable

and retain in the housing to aid reassembly
Carefully slide the housing assembly into position on the

guide sleeves secured to the carrier
Ensure the dust excluders are located correctly on both

carrier and housing retainers
Slide the housing backwards and forwards several times to

check the smooth movement of the housing on the guide
sleeves.
Fitting new End Caps in line with Maintenance Manual

.
28
August 2007
Section 8: Carrier Replacement
NOTE: Where applicable, It is advisable to record

the position of the SHORT & LONG, or LARGER &
SMALLER, diameter guide sleeves on the original
carrier before removal This will ensure the guide
sleeves are fitted in the correct position on the new
carrier
Inspect the integrity of the piston excluders, they

should be secure and free from any signs of
damage.
Clean and inspect the guide sleeves removed from

the carrier.
If there is evidence of damage, wear or corrosion
replace with new items .
29
August 2007
Section 8: Carrier Replacement (contd)
Fitting a new Carrier
IMPORTANT:
There are alternative guide sleeve and carrier designs currently in service.
Type1 - Short guide sleeve with ROUND profile. Guide sleeves

have integral dust excluder retainers (current design)
Type 2 - Short guide sleeve with OVAL profile (Fig 8.4). Dust
excluder retainers are separate components pressed onto the
carrier (older phase 1 design)
30
August 2007
Type 2 only (phase 1)
Fit the excluder retaining ring onto the carrier guide pin boss by
pressing with MST 1024 or a suitable drift up to the shoulder do
not press beyond the shoulder.
31
August 2007
Type 1 Short Guide Sleeve - ROUND profile. (new design)

Locate the guide sleeve in the correct position on the new carrier
and loosely retain with the new guide sleeve screw provided.
Tighten the screw to a torque of 430-440Nm.
Type 2 Short Guide Sleeve - OVAL profile (phase 1 design)

For the short guide sleeve which has an oval profile it is important
that it is secured to the carrier in the correct position.
Locate the guide sleeve on the new carrier and loosely retain with
the new guide sleeve screw.
Turn the guide sleeve until the flat sides are in a vertical plane in
line with the carrier abutment.
Use open ended spanner to hold the pin in its correct orientation.
With the guide sleeve correctly aligned, tighten guide sleeve
screw to 495 585 Nm.
32
August 2007

Type 1 & 2 Long Guide Sleeve

Locate the guide sleeve on the carrier and retain with the guide sleeve
screw provided.
Tighten the screw to a torque of:
M20 495-585 Nm.
M18 430-440 Nm.
Locate the new carrier correctly on the vehicle axle and secure with
new retaining bolts.
Tighten the bolts to the torque specified by the vehicle manufacturer.
Apply grease to the guide sleeve and housing guide sleeve bores.
Carefully slide the housing assembly into position on the guide
sleeves secured to the carrier.
Ensure the dust excluders are located correctly on both carrier and
housing retainers
Slide the housing backwards and forwards several times to check

the smooth movement of the guide sleeves.
33
August 2007
Remove the piston dust excluders.

Clean the Piston Heads and housing retainers
with a suitable brake cleaner, or clear methylated
spirits. Check for damage to both areas.
Fitting new Piston Dust Excluders

WARNING
Do not use any grease to aid assembly.
34
August 2007
Fitting new piston dust excluders

Lightly lubricate the piston shafts with the grease supplied in the
kit.
NOTE: Only use the grease supplied with the replacement
components/kits. Under no circumstance should any other type
of grease be used.
Carefully feed one of the new dust excluders over a piston head.
Do not at this stage fit the excluder into the groove in the caliper
housing.
Fit excluder into groove on piston head.
With the boot stretched it is then pulled over and fitted to the
groove in the caliper housing.
It is essential that the boot is fitted correctly.
This is best achieved by rotating the boot and checking for
uniform bead fitment into the grooves.
35
August 2007
Fitting new piston dust excluders
It is important that the excluders are fitted correctly.
36
August 2007
Section 10: Visual wear Indicator Replacement
NOTE:
If the original aluminum indicator is locked in the
housing follow the procedure detailed below
'cut' end and carefully center punch the cut end of the
indicator
Using a 5mm bit as a pilot drill carefully through the

wear indicator shaft to a depth that is definitely through
the housing.
Using a 9mm bit drill carefully through the wear indicator

shaft
Remove the remaining end of the wear indicator and
clean any remaining debris from the bore and the
housing.
37
August 2007
There are four types of SHORT Guide Sleeve/bush

combination that can be found on the ELSA2 Disc Brake
Type 1 and 2 (phase 1) Are NOT interchangeable with types 3

and 4,
(phase 1)
Type 1 An oval guide sleeve with a plain bush and separate

dust excluder retainer
Type 2 An oval guide sleeve with a plain sleeved bush, for

housings with a larger bore, and separate dust excluder
retainer
38
August 2007
There are four types of short Guide Sleeve/bush combination

that can be found on the ELSA2 Disc Brake (phase 2)
Type 3. A plain guide sleeve with an oval bronze bush and

separate dust excluder retainer
Type 4. A plain guide sleeve with an oval rubber bush and

integral dust excluder retainer
39
August 2007
Section 11: Guide Sleeve, Dust Excluder, Retainer & Bushes (contd)
Removing Guide Sleeve "Oval" Bush/Bushes
NOTE: It is important to ensure correct alignment of the

new bush/bushes. The notches in the bush are aligned
in the horizontal plane between the 2 guide sleeve
bores.
Before removal, check the alignment of the oval

Bush/bushes and mark the housing so that the new
bush/bushes can be correctly aligned before fitment.
Using the appropriate ArvinMeritor service tool, press or drift

out the bush from the housing
.
MST 1000 - Type 1 short bore and all long bore bushes
MST 1025 - Type 2 short bore (sleeved bush)
MST 1023 - Type 3 Short bore (bronze oval bush)
MST 1022 - Type 4 Short bore (rubber oval bush) 40

August 2007
NOTE: It is important to ensure correct alignment of the new bush/bushes. The notches in
the bush are aligned in the horizontal plane between the 2 guide sleeve bores.
41
August 2007
Fitting Guide Sleeve Oval Bush
Align new oval bronze bush with markings on housing.

NOTE: The bush must be assembled from the actuator side
of the housing.
insert new bush into the housing bore using ArvinMeritor
Service Tool
Pull the oval bush into the guide sleeve bore to a depth of
10 mm from the end of the guide sleeve excluder retainer
side of the bore.
The bush must be fitted from the actuator side of the

housing.
42
August 2007
Fitting Guide Sleeve bushes Long Bore
Place one of the new bushes onto a suitable arbor from the
ArvinMeritor service tool kit MST 1000.
Insert into the housing bore from the actuator side.
Pull the bush into the guide sleeve bore to a depth of 10 mm

from the end of the guide sleeve excluder retainer side of the
bore
Repeat this process with the second bush.
Pull the bush into the guide sleeve bore until it is 1 mm from the
dust excluder retainer seating counter bore
43
August 2007
Bolt torque Specifications

Tightening Torques
M18 Guide Sleeve Screw (long) 430 - 450 Nm
M18 Guide Sleeve Screw (short) 430 - 450 Nm
Adjuster Stem 40 Nm Maximum
Pad Retaining Plate Screw 33 - 40 Nm
CWS Retaining Screw 33 - 40 Nm
Air Actuator Retaining Nut

Pre Torque 80 - 100 Nm
Final Torque 180 - 210 Nm
Bridge Screws
M16 Internal Hex Capscrew 300 350Nm
M16 Torx Head Bolt 95 - 105Nm + 75 degrees +/- 5 degrees
M14 Torx Head Bolt 235 275Nm
44
August 2007
Air Actuator Specifications
Actuator type
The ELSA2 disc brake uses a 76 mm stroke actuator.

This actuator is supplied with a pushrod setting length of
20mm.
The ELSA 195/225-1 & -3 disc brake uses a 65 mm stroke

actuator.
This actuator is supplied with a pushrod setting length of
15mm.
76mm Stroke 65mm Stroke

NOTE: It is important the correct actuator is fitted.
45
August 2007
Servicing
Service kits
Pad
Pad Retainer
Adjuster Stem cap
Piston Excluder
Guide Sleeve Excluder
Guide Sleeve
Service Housing
Bridge
Carrier
Service Caliper
Wear Sensor
PWWI (pad wear warning indicator)
46
August 2007
Pad Kit (Axle Set)
47
August 2007
Pad Retainer Kit
48
August 2007
Adjuster Stem Cap Actuator Seal
49
August 2007
Piston Excluder Seal Kit
50
August 2007
Guide Sleeve Seal Kit
51
August 2007
Guide Sleeve Kit
52
August 2007
Service Housing
53
August 2007
Bridge Kit
54
August 2007
Carrier Kit
55
August 2007
Servicing Caliper
56
August 2007
PWWI
Wear Switch
Continuous
Wear Indicator
57
August 2007
Service Literature
Maintenance Manual MM-1130 ELSA2

Available on the following web site:
ArvinMeritor.com
http://www.meritorhvs.com/LODSearch.aspx?flag=1&product_id=15&publication=Service
58
August 2007
59
August 2007
60
August 2007
Review differences between D-DUCO &

ELSA2 disc brake.
61
August 2007
DUCO Disc Brake ELSA2 Disc Brake
62
August 2007
Visual Differences
The DUCO Brake has a one piece housing and
bridge.
The ELSA Brake as the housing and bridge as
separate parts.
The DUCO Brake has a heavy bolt on cover plate.

The ELSA Brake has the housing aperture cast on the
inside.
The DUCO Brake has an adjuster mounted on the side

of the actuation mechanism.
The ELSA Brake has an adjuster built inside the Piston
Housing Assembly. 63
August 2007
DUCO Housing ELSA Housing & Bridge
64
August 2007
Visual Differences
The DUCO Brake has a one piece housing and bridge.
The ELSA Brake as the housing and bridge as separate
parts.

The ELSA Brake has the housing aperture cast on
the inside.
The DUCO Brake has an adjuster mounted on the side

of the actuation mechanism.
The ELSA Brake has an adjuster built inside the Piston
Housing Assembly.
65
August 2007
DUCO Cover Plate ELSA Housing
66
August 2007
Visual Differences
The DUCO Brake has a one piece housing and bridge.
The ELSA Brake as the housing and bridge as separate
parts.

The ELSA Brake has the housing aperture cast on the
inside.
The DUCO Brake has an automatic adjuster

mounted on the side of the actuation mechanism.
The ELSA Brake has an automatic adjuster built
inside the Piston Housing Assembly.
67
August 2007
DUCO Adjuster ELSA Piston Housing

Assy.
68
August 2007
Visual Differences (contd.)

The DUCO brake has round tappet assemblies.
The ELSA brake has Tri-lobel pistons.
69
August 2007
DUCO Tappet Assy. ELSA Piston Assy.
70
August 2007
The DUCO brake has plain guide sleeves and

excluder retainer pressed onto a boss on the carrier.
The ELSA brake has a guide sleeve with integral
excluder retainer.
71
August 2007
DUCO Guide Sleeve ELSA Guide Sleeve
72
August 2007
The DUCO brake has a plain plastic bush on the

leading guide sleeve.
The ELSA brake has two bushes which are steel
backed with PTFE coating.
73
August 2007
DUCO G/S Bush ELSA G/S Bushes
74
August 2007

The DUCO brake has a thin walled oval bush on the
trailing guide sleeve.
The ELSA brake has thick walled oval bush which
inter changeable with a rubber bush.
75
August 2007
DUCO Oval Bush ELSA Oval Bush
76
August 2007
The DUCO brake adjuster is integral of the manual

override stem.
The ELSA brake has a stand alone manual override
stem.
77
August 2007
DUCO Adjuster ELSA Manual Override Stem
78
August 2007
Wear Sensors
Wear
Switch
Continuous
Wear Indicator
79
August 2007
Any questions ?
80

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What are the main components of an ELSA 2 brake?

What are the main components of an ELSA 2 brake?

What are the differences between an ELSA brake and a DUCO brake?

What are the differences between an ELSA brake and a DUCO brake?

ELSA 2 Training Presentation

ELSA2 Training Presentation

12 GUIDE SLEEVE DUST

14 GUIDE SLEEVE BUSH - OVAL

16 GUIDE SLEEVE BUSH - ROUND

24 GUIDE SLEEVE - LONG

25 SCREW ( Guide sleeve long)

26 GUIDE SLEEVE - SHORT

27 SCREW ( Guide sleeve short)

33 ADJUSTER DUST CAP

46 BALL ENDED PIN

17 MANUAL ADJUSTER STEM

33 ADJUSTER DUST CAP

35 CWS ( Wear Sensor/Switch -

49 WEAR SENSOR ARM

Disc Brake Service Procedure

Preventive Maintenance Servicing

Every 3 months or 20,000 Km.

Preventative maintenance - (contd)

Operational functional checks

Automatic adjuster check

Guide Pin sliding check

Guide sleeve pin/bush wear check

Operational functional checks

Automatic adjuster check

Set an increased pad to rotor clearance by de-adjusting the brake

Operate the service brake several times with approximately 1 to 2

Observe the direction of rotation of the ring wrench. This should

NOTE: As the number of brake applications increase, the

If any of the above faults arise, the housing assembly must be

Operational functional checks

Checking the Sliding action of the housing

Move the housing backwards and forwards in the direction of

It must be possible to push/pull the housing easily by hand.

NOTE: Be careful not to damage the guide sleeve

Operational functional checks

Checking Guide Pin Bush Wear

Remove the pads .

Lock the tool in position with the locknut

Position the caliper in the new pad condition

Operational functional checks

Mount a dial gauge in a suitable position on the vehicle hub

Ensure the hub cannot rotate

Set the dial gauge to zero.

Fit a torque wrench to the tool in the position

Apply the torque wrench in the correct direction up to 25Nm

Operational functional checks

NOTE: DO NOT RESET THE DIAL GAUGE.

Apply the torque wrench up to 25Nm without allowing the

NOTE: Take care not to disturb the position of the dial

NOTE: Max acceptable free play measurement is 2.0mm

Operational functional checks

The ELSA2 Air Disc Brake can incorporate a variety of

a) PWWI (Pad Wear Warning Indicator) which is fitted to the

b) An electronic CWS - continuous wear sensor or switch