Cat Dcs Sis Controller
Cat Dcs Sis Controller
Cat Dcs Sis Controller
January 2015
Component Location FLUID POWER SYMBOLS
27 Description
Part Machine Schematic
Number Location Location
BASIC COMPONENT SYMBOLS
28 Cooler Gp - Hydraulic
Cylinder Gp - Boom 420F:
337-9751
210-7076
3
4
B-2
F-5
(FIXED) (2 - SECTION) (VARIABLE & PRESSURE
COMPENSATED)
430F: 246-9884
Cylinder Gp - Bucket 420F: 210-7088
35 Cylinder Gp - Coupler
430F: 210-7096
178-3713
5
6
F-4
A-8
VARIABILITY SPRING
(ADJUSTABLE)
LINE RESTRICTION
(VARIABLE)
PRESSURE
COMPENSATION
HYDRAULIC PNEUMATIC
ENERGY TRIANGLES
LINE RESTRICTION
(VARIABLE & PRESSURE
COMPENSATED)
ATTACHMENT
Cylinder Gp - Coupler (HOE) 361-1139 7 B-2 VALVE ENVELOPES VALVES VALVE PORTS
2 Cylinder Gp - E-Stick
Cylinder Gp - Front Steer
210-7098
214-5097
8
9
F-3
A-5
Cylinder Gp - Lift LH: 358-5034 10 B-8
ONE POSITION TWO POSITION THREE POSITION TWO - WAY THREE - WAY FOUR - WAY
RH: 358-5035 11 B-8
23 Cylinder Gp - Swing
430F:
LH:
210-7092
381-8055 16 F-5
NORMAL POSITION SHIFTED POSITION INFINITE POSITION
SYMBOL LOADED CONTROLLED
DTNT and Switch: 359-7248 ACCUMULATORS CROSSING & JOINING LINES HYDRAULIC & PNEUMATIC CYLINDERS
Valve Gp - Ride Control (OPT) 245-8780 41 C-8
Valve Gp - Swing Cushion 206-3685 42 F-5
26 Fitting - Quick Disconnect, Male 106-0406 43 F-2, F-3
SPRING LOADED GAS CHARGED LINES CROSSING LINES JOINING SINGLE ACTING DOUBLE ACTING
Fitting - Quick Disconnect, Female 106-0401 44 F-2, F-3
Valve - Auxiliary Ball 365-2875 45 F-2, F-3 HYDRAULIC PUMPS HYDRAULIC MOTORS INTERNAL PASSAGEWAYS
UNIDIRECTIONAL UNIDIRECTIONAL
TAP LOCATIONS
Pressure, Sampling, Sensor FLOW IN ONE PARALLEL CROSS FLOW IN
BIDIRECTIONAL BIDIRECTIONAL DIRECTION FLOW FLOW EITHER
Schematic DIRECTION
Tap Number Description
Location
UENR3237-01
PRESSURE SWITCH PRESSURE SWITCH TEMPERATURE ELECTRICAL WIRE
4 (ADJUSTABLE) SWITCH
10 13 16
30 Page,
CIRCUIT NUMBER
PREVIOUS STANDARD
325-PK-14 B A
34 6 3 CIRCUIT NUMBER
IDENTIFICATION
WIRE GAUGE (EXAMPLE VALVE)
FRONT VIEW
33
45
21 T3
37
7
32 31
COUPLER (HOE)
8 7 6 5 4 3 2 1
(4) CYLINDER GP (5) CYLINDER GP (8) CYLINDER GP
BOOM (16) CYLINDER GP BUCKET (15) CYLINDER GP E - STICK
STAB BOOM (17) CYLINDER GP STAB
420F: 210-7076 SWING (LH) SWING SWING (RH)
BUCKET 420F: 210-7088
STICK STICK
(14) CYLINDER GP E-STICK 210-7098
430F: 246-9884 381-8055 430F: 210-7096 420F: 210-7082 STAB (RH) (39) VALVE GP
381-8054
(39) VALVE GP 430F: 210-7092 291-2682 PILOT (HOE)
PILOT (HOE) 359-7227 OPERATOR RIGHT JOYSTICK
OPERATOR LEFT JOYSTICK (44) FITTING QUICK (43) FITTING QUICK
359-7227 DISCONNECT, FEMALE DISCONNECT, MALE)
(42) VALVE GP
(13) CYLINDER GP 106-0401
(31) VALVE GP SWING CUSHION 106-0406
STAB (LH)
CHECK LH (STAB) 291-2681 206-3685 (43) FITTING QUICK (44) FITTING QUICK
359-7213 DISCONNECT, MALE) DISCONNECT, FEMALE
106-0406 106-0401 NOTE B
NOTE B
NOTE B
NOTE B
F NOTE B F
(29) VALVE GP (32) VALVE GP
T9 (45) VALVE
BACKHOE CHECK RH(STAB)
BA L3 SA 359-7213 AUXILIARY BALL
6 BANK: 359-7208 NOTE B
365-2875
7 BANK: 359-7210
(45) VALVE
8 BANK: 359-7212 RS2 R2 LS2 EA T9 HAA
AUXILIARY BALL
365-2875
L4 L2 L3 L1 R1 R3 R4 R2
(40) VALVE GP
PILOT (STAB)
STD: 359-7246
W / SWITCH: 359-7247
DTNT and SWITCH: 359-7248 STABILIZER JOYSTICK
OPERATOR OPERATOR
LEFT RIGHT
E E
NOTE B
T6
LOADER JOYSTICK
(38) VALVE GP
PILOT (LDR) BB SA BA SB EB HAB LAA
(30) VALVE GP
LIFT TILT 382-4996
(37) VALVE GP (21) MANIFOLD - PILOT (BASIC +6) BOOSTED BRAKE
PATTERN CHANGE 359-7225 220-8226
300-4491 J2 T2 T3 J3
P6
J1
TO REAR AXLE LINE PATTERNS
LEFT LEFT WHEEL BRAKE
D BRAKE Pressure Line D
PEDAL
Pilot / Load Sensing Pressure
Component Group
T1 RIGHT
R1 L4 R3 L2 BRAKE TO REAR AXLE CALLOUTS
PEDAL
RIGHT WHEEL BRAKE
YY Taps (Pressure, Sampling, Sensor - by letter)
LB LA TA TB
Callout Number Component
(Machine Location from (52) VALVE GP - CONTROL Name
Component LocationsTable)
138-1234 Part Number
P ACC BRK DIAG
EA HAA LAB
T3
(1) ACCUMULATOR GP
PILOT
(Dimensions: 39 inches x 28 inches)
(24) SENSOR GP
RIDE CONTROL (OPT) T9
344-7391
(41) VALVE GP T2
RIDE CONTROL (OPT)
PS ACC
245-8780 D (23) SENSOR GP
PUMP DISCHARGE PRESSURE
T1
344-7391
T (26) SWITCH GP
DIFFERENTIAL PRESSURE
R
(OPTIONAL)
(10) CYLINDER GP H
P7 134-0404
LIFT (LH)
358-5034
LA LIFT (22) PUMP GP
IMPLEMENT T7
LB 307-3069
30 Page,
B1
LIFT
A1
(3) COOLER GP
HYDRAULIC
(11) CYLINDER GP 337-9751
LIFT (RH)
B 358-5035
B
(18) CYLINDER GP
TILT (LH) TA TILT (7) CYLINDER GP HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
358-5045 COUPLER (HOE)
TB PILOT PUMP OUTPUT
361-1139
MAIN PUMP OUTPUT
LIFT CYLINDER CIRCUIT
B2 BUCKET CYLINDER CIRCUIT
TILT (35) VALVE GP LOAD SENSE CIRCUIT
A2 HMU LOAD SENSE RELIEF STEERING CIRCUIT
341-7654 STICK CYLINDER CIRCUIT
SUPPLY LINE
(19) CYLINDER GP AUX CIRCUIT
TILT (RH) BOOM CYLINDER CIRCUIT
358-5045 TILT CYLINDER CIRCUIT
LOADER VALVE CIRCUIT
(12) CYLINDER GP DRAIN / RETURN LINE
MP BUCKET (OPT) STABILIZER CYLINDER CIRCUIT
185-1839 SWING CYLINDER CIRCUIT
(33) VALVE GP E-STICK CYLINDER CIRCUIT
COUPLER (HOE) COUPLER CIRCUIT (HOE)
358-2091 T7 BOOSTED BRAKE OIL CIRCUIT
LAA AUX
AUX P7
LAB
BACKHOE COUPLER
(28) TANK GP
A FILTER / BREATHER / SIGHT GAGE A
B3 351-5888
(6) CYLINDER GP
COUPLER A3
178-3713 (27) TANK GP
HYDRAULIC
358-9301
THIS SCHEMATIC IS FOR THE 420F AND 430F BACKHOE LOADER HYDRAULIC SYSTEM
MEDIA NUMBER: UENR3237-01
NOTE B: OPTIONAL ATTACHMENT SCHEMATIC PART NUMBER: 362-9207, CHANGE: 03, VERSION: -
FRONT STEER CYL. (9) CYLINDER GP Components are shown installed on a fully operable machine with the key and engine off, transmission shifter
FRONT STEER in neutral and with parking brake set.
(34) VALVE GP 214-5097
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
COUPLER (LDR)
Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.
359-7228
8 7 6 5 4 3 2 1