INTERACTIVE SCHEMATIC
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Information
Schematic
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Component Table
Tap Table
Fluid Power Symbols
Electrical Symbols
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Tap Views
Features
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Bookmarks
X
EC-C3
EC-C2
E-C60
EC-C1
E-C61
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Hydraulic System
988H Wheel Loader Tier 3
A7A1-UP
BXY4000-UP
©
2011 Caterpillar, All Rights Reserved
Printed in U.S.A.
UENR1249-01
March 2010
2010 Caterpillar, All Rights Reserved
©
COMPONENT TABLE
Description
Part
Number
Machine
Location
Schematic
Location
Description
Part
Number
Machine
Location
Schematic
Location
Switch As - Pressure, Accumulator Charging 174-4312 59 H-9
Switch As - Pressure, Parking Brake Oil 174-4312 60 I-9
Tank As 152-3870 61 A-5
Tank As - Expansion 220-2948 62 B-3
Actuator Gp -Pilot Control (Proportional Solenoid), Aux. 217-6719 3 D-10 Tank As - Hydraulic 153-3602 63 B-5
Actuator Gp -Pilot Control (Proportional Solenoid), Dump 217-6719 4 D-11 Tube 1U-1570 64 B-4
Actuator Gp -Pilot Control (Proportional Solenoid), Raise 217-6719 5 D-13 Valve 6E-1291 65 D-14
Actuator Gp -Pilot Control (Proportional Solenoid), Tilt 217-6719 6 G-11 Valve 102-4156 66 D-10
Actuator Gp -Pilot Control (Proportional Solenoid), Aux. 217-6720 7 E-10 Valve 102-4156 67 D-11
Actuator Gp -Pilot Control (Proportional Solenoid), Rack 217-6720 8 E-11 Valve 102-4156 68 D-12
Actuator Gp -Pilot Control (Proportional Solenoid), Lower 217-6720 9 E-12 Valve 153-9990 69 G-11
Adapter - Orifice 122-2222 10 F-10
Brake Gp - Parking 174-1552 11 J-8
Coil As 326-5212 12 B-11 Valve - Diverter, Secondary Steering 2U-7345 71 F-5
Control Gp - Foot Brake 169-8258 13 J-11 Valve - Fluid Sampling 8C-3446 72 E-2
Cooler Gp - Hydraulic Oil 164-0058 14 D-2 Valve Gp - Check 9T-1013 73 B-14
Core As - Axle Oil Cooler 173-6753 15 I-2 Valve Gp - Check 9T-1013 74 C-8
Valve As - Check, Fan Motor Anti-cavitation 9T-3752 75 D-2
Valve Gp - Accumulator Charging 235-0251 76 H-10
Valve Gp - Brake Control, Parking 106-1774 77 J-9
Valve Gp - Brake Control, Service 200-0866 78 I-11
Cylinder Gp - Steering 288-0568 18 G-7 Valve Gp - Check 4T-5896 79 E-14
Valve Gp - Check, Air Purge 3G-8607 80 C-1
Valve Gp - Check, Axle Oil Cooler Fan Anti-cavitation 9T-5134 81 J-4
Valve Gp - Check, Axle Oil Cooler Fan Anti-cavitation 9T-3752 82 J-3
Filter Gp - Oil, Brake 287-8402 20 E-2 Valve Gp - Check, Hydraulic Oil Cooler Bypass 6E-1454 83 D-3
Filter Gp - Oil, Case Drain (Fan) 166-4647 21 C-3 Valve Gp - Check, Steering Pilot 9T-3096 84 E-6
Filter Gp - Oil, Case Drain (Implement Pump) 166-4647 22 A-10 Valve Gp - Check, Steering Pilot 104-7108 85 E-6
Filter Gp - Oil, Case Drain (Steering) 166-4647 23 C-5 Valve Gp - Check, Steering Quad 149-4617 86 E-7
Filter Gp - Oil, Screen, Axle Oil Cooler 230-3633 24 I-5
Fitting (Quick Disconnect), Auxiliary (LL, KK) 6V-3965 25 F-10
Fitting (Quick Disconnect), Implement Pump Case Air Bleed 6V-3965 26 B-10 Valve Gp - Control, Tilt Regeneration 318-2925 88 G-11
Fitting (Quick Disconnect), Implement Pump Output (HH) 6V-3965 27 B-12 Valve Gp - Demand Fan 191-8735 89 D-1
Fitting (Quick Disconnect), Brake/Pilot Pump Output (CC) 6V-3965 28 C-1 Valve Gp - Fan Pump Control (Pressure, Flow Compensator) 207-0695 90 C-2
Fitting (Quick Disconnect), Fan Pump Load Sense (DD) 6V-3965 29 C-2 Valve Gp - Manual 112-1817 91 C-13
Fitting (Quick Disconnect), Fan Pump Output (GG) 6V-3965 30 C-3 Valve Gp - Pilot, Stic Steering 249-5615 92 C-7
Fitting (Quick Disconnect), Pilot Supply (AA) 6V-3965 31 E-3 Valve Gp - Pressure Reducing 185-1897 93 F-14
Fitting (Quick Disconnect), Steering Pump Case Air Bleed 6V-3965 32 D-5 Valve Gp - Pressure Reducing, Steering Pilot Oil Regulator 6E-4286 94 F-6
Fitting (Quick Disconnect), Steering Pump Output (BB) 6V-3965 33 D-6 Valve Gp - Relief 6E-6188 95 F-6
Impeller 146-8990 34 B-11 Valve Gp - Relief 334-8332 96 D-10
Manifold Gp - Control 322-3793 35 E-9 Valve Gp - Relief, Line Relief, Lift Cylinder Head End 144-0221 97 E-13
Manifold Gp - Hydraulic 326-3803 36 G-7 Valve Gp - Relief, Line Relief, Lift Cylinder Rod End 129-8293 98 E-13
Motor Gp - Axle Oil Cooler Fan 178-1602 37 I-3 Valve Gp - Relief, Line Relief, Tilt Cylinder Head End 117-0160 99 E-11
Motor Gp - Hydraulic Fan 213-5268 38 D-2 Valve Gp - Relief, Line Relief, Tilt Cylinder Rod End 334-0895 100 E-12
Plug - Orifice 8J-6815 39 D-9 Valve Gp - Relief, Line, Auxiliary 172-5481 101 E-11
Plug - Pipe 1T-0936 40 F-7 Valve Gp - Relief, Pilot 276-3650 102 E-3
Pump Gp - Axle Oil Cooler 292-9912 41 H-5 Valve Gp - Relief, Secondary Steering 6E-3986 103 F-5
Valve Gp - Relief, Steering Cylinder Crossover 9T-7419 104 G-6
Valve Gp - Relief, Steering Cylinder Crossover 9T-7419 105 F-7
Pump Gp - Implement 346-6095 43 B-12 Valve Gp - Relief, Steering Implement, Pilot 276-3649 106 E-3
Valve Gp - Ride Control 259-6275 107 D-9
Valve Gp - Selector and Pressure Control (Secondary Steering) 6E-5566 108 E-6
Pump Gp - Secondary Steering 150-7585 45 E-5 Valve Gp - Shuttle 4T-1860 109 F-14
Pump Gp - Steering 153-9624 46 D-6 Valve Gp - Shuttle 141-1481 110 C-8
Screen - Diffuser 178-0182 47 B-4 Valve Gp - Shuttle, Pump Pilot 4T-1860 111 F-6
Screen As 9T-9227 48 B-4 Valve Gp - Solenoid, 24 Volt 151-7455 112 B-14
Screen As 9T-9227 49 B-5 Valve Gp - Solenoid, 24 Volt, Hydraulic Lockout 149-2610 113 B-14
Screen As 7J-2656 50 B-4 Valve Gp - Solenoid, 24 Volt, Axle Oil Cooler 149-2610 114 J-4
Screen As 7J-2656 51 B-4 Valve Gp - Solenoid, 24 Volt, Ride Control 152-8340 115 C-9
Screen As 7J-2656 52 B-5 Valve Gp - Solenoid, Load Sensing 173-7455 116 C-13
Screen As 307-6457 53 F-7
Sensor Gp - Temperature, Hydraulic Oil 288-8390 54 B-3
Sensor Gp - Temperature, Axle Oil 131-0427 55 J-13 Valve Gp - Steering Neutralizer 296-5662 118 D-7
Sensor Gp-Pressure 349-1178 56 B-12 Valve Gp - Steering Pump Control (Press., Flow Compensator) 176-7521 119 D-5
Sensor Gp-Pressure, Lift Cylinder Rod End 221-3416 57 F-9 Valve Gp - Steering Pump Control (Press., Flow Compensator) 176-7520 120 C-5
Switch As - Pressure, Filter Bypass 339-4361 58 E-2
Component Locations
Accumulator Gp - Brake, CA Approved
Accumulator Gp - Brake, CE Approved
350-5576
220-1432
1
I-10
Accumulator Gp - Ride Control, CA Approved
Accumulator Gp - Ride Control, CE Approved
348-9283
259-4694
2
D-9
Cylinder Gp - Lift, Left Hand
Cylinder Gp - Lift, Left Hand (Block Handler)
173-8613
309-9547
16
G-13
Cylinder Gp - Lift, Right Hand
Cylinder Gp - Lift, Right Hand (Block Handler)
173-8612
309-9546
17
G-9
Cylinder Gp - Tilt
Cylinder Gp - Tilt
Cylinder Gp - Tilt (Block Handler)
271-6441
231-1955
309-9545
19
G-10
Pump Gp - Pilot, Brake
Pump Gp - Pilot, Brake, Axle Oil Cooler Fan
177-8924
258-5060
B-1
Pump Gp - Hydraulic Fan
Pump Gp - Hydraulic Fan, High Ambient Temperature
228-3636
228-3638
44
B-242
Valve - Breaker Relief
Valve - Breaker Relief (EU Attachment)
9T-0818
220-0812
70
C-3
Valve Gp - Control, 2 Function
Valve Gp - Control, 3 Function
222-4436
291-8508
87
D-10 to F-14
Valve Gp - Steering
Valve Gp - Steering, With Secondary Steering)
301-4599
301-4602
117
G-5
2010 Caterpillar, All Rights Reserved
©
TAP TABLE
Tap
Number
Description
Schematic
Location
AA Pilot Supply E-3
BB Steering Pump Cutoff D-6
CC Brake Charge C-1
DD Fan Drive Signal C-2
EE Front Brake Supply I-10
FF Rear Brake Supply I-11
GG Fan Drive Supply C-2
HH Main System Relief B-12
II Tilt, Rod End Line Relief F-12
JJ Tilt, Head End Line Relief F-12
KK Auxiliary Line Relief F-11
LL Auxiliary Line Relief F-11
MM Front Brake Pressure I-13
NN Rear Brake Pressure I-13
SOS Fluid Sampling Port E-2
Tap Locations
Pressure and Sampling
©
2010 Caterpillar, All Rights Reserved
FLUID POWER SYMBOLS
ONE POSITION
TWO POSITION
THREE POSITION
VENTED
PRESSURIZED
RETURN ABOVE FLUID LEVEL
RETURN BELOW FLUID LEVEL
LINES CROSSING LINES JOINING
TWO-WAY
THREE-WAY
FOUR-WAY
SPRING
CONTROL VALVES
RESTRICTION
LINE RESTRICTION
(FIXED)
2-SECTION PUMP
MAIN
AUX.
SPRING
(ADJUSTABLE)
VARIABILITY
LINE RESTRICTION
(VARIABLE)
LINE RESTRICTION
VARIABLE and PRESSURE
COMPENSATED
PRESSURE
COMPENSATION
PUMP: VARIABLE and
PRESSURE COMPENSATED
ENERGY TRIANGLES
HYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE
TEMPERATURE
FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES
VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONER
PUMP or MOTOR
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
EXTERNAL RETURN
INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED
COMPLETE
INTERNAL
SUPPLY PRESSURE
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOID
or MANUAL
SOLENOID
and PILOT
SOLENOID and
PILOT or MANUAL
COMBINATION CONTROLS
SOLENOID
SERVO
THERMAL
DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASIC
SYMBOL
SPRING
LOADED
CHECK VALVES
TWO
POSITION
INFINITE
POSITIONING
FLOW IN ONE
DIRECTION
FLOW ALLOWED IN
EITHER DIRECTION
THREE
POSITION
CROSS
FLOW
PARALLEL
FLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P T
SHIFTED POSITION
INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOT
CONTROLLED
©
2010 Caterpillar, All Rights Reserved
ELECTRICAL SYMBOLS
Hydraulic Symbols (Electrical)
325-AG135 PK-14
Circuit Identification
Number
Wire Color
Wire Gauge
Harness identification code
This example indicates
wire 135 in harness "AG".
325-PK-14
Wire Gauge
Wire Color
Circuit Number
Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example
Hydraulic Schematic Example
325-PK
Wire Color
Circuit Number
Identification
B
A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer
(Fluid)
Transducer
(Gas / Air)
G
Generator
Electrical Wire
Pressure Switch
M
Electric Motor
Pressure Switch
(Adjustable)
Temperature Switch
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Electrical Symbols (Electrical)
T
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
PILOT HYDRAULIC CIRCUIT
SUB 651
IMPLEMENT PUMP OUTPUT
AXLE COOLING FAN PUMP OUTPUT
SECONDARY STEERING PUMP OUTPUT
TILT CYLINDER CONTROLCIRCUIT
STEERING CIRCUIT
HYDRAULIC OIL COOLING CIRCUIT
SUPPLY LINE
BRAKE CIRCUIT
AUXILIARY CONTROL CIRCUIT
DRAIN / RETURN LINE
lIFT CYLINDER CONTROL CIRCUIT
CON 305
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)
YY
(52) VALVE GP - CONTROL
138-1234
Callout Number
(Machine Location from
Component LocationsTable)
Component
Name
Part Number
ELECTRICAL CIRCUITS
Components are shown installed on a fully operable machine with the key and engine off, transmission shifter
in neutral and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
988H WHEEL LOADER TIER 3 HYDRAULIC SYSTEM
HYDRAULICS: PART NUMBER: 348-4772, CHANGE: 01, VERSION: -
AXLE COOLING: PART NUMBER: 260-0866, CHANGE: 00, VERSION: -
BRAKES: PART NUMBER: 259-3116, CHANGE: 03, VERSION: -
MEDIA NUMBER: UENR1249
A
B
C
D
E
F
12345678
91011121314
G
H
I
J
12345678
91011121314
A
B
C
D
E
F
G
H
I
J
AXLE OIL
FAN RETURN
PUMP
CASE
AIR
BLEED
FAN SPEED
BRAKE ACCUM
PRESS. SWITCH
RIGHT
TURN
LEFT
NEUT
RIGHT
NEUT
STEERING
PUMP
CASE
FILL
PORT
PRIMARY STEERING
PRESS. SWITCH
PUMP CASE
FILL PORT
PUMP CASE
AIR BLEED
RIDE
CONT
LOWER RACK
RAISE
DUMP
HYDRAC
ON/OFF
FRONT
REAR AXLE
AXLE OIL FAN SUPPLY
AXLE OIL FAN RETURN
C
NO
NC
STOPLAMP SW
TRANSMISSION
CONTROL
PARKING BRAKE INDICATION SW
REAR AXLE
FRONT AXLE
IMPELLER CLUTCH PEDAL
POSITION SIGNAL
(TO TRANSMISSION CONTROL)
THROTTLE LOCK DISCONNECT SW
HITCH
TRANSMISSION
CONTROL
NN
MM
FF
EE
AA
CC
DD
GG
HH
LLKK
JJ
II
BB
SOS
STEERING CYLINDER
AXLE COOLING SYSTEM
BRAKE SYSTEM
LIFT CYLINDER LIFT CYLINDER
TILT CYLINDER
(1) ACCUMULATOR GP
BRAKE, CA APPROVED
350-5576
BRAKE, CE APPROVED
220-1432
(2) ACCUMULATOR GP
RIDE CONTROL , CA APPROVED
348-9283
RIDE CONTROL , CE APPROVED
259-4694
(7) ACTUATOR GP-
PILOT CONTROL
PROPORTIONAL SOL.
217-6720
(3) ACTUATOR GP-
PILOT CONTROL
PROPORTIONAL SOL.
217-6719
(4) ACTUATOR GP-
PILOT CONTROL
PROPORTIONAL SOL.
217-6719
(5) ACTUATOR GP-
PILOT CONTROL
PROPORTIONAL SOL.
217-6719
(8) ACTUATOR GP-
PILOT CONTROL
PROPORTIONAL SOL.
217-6720
(9) ACTUATOR GP-
PILOT CONTROL
PROPORTIONAL SOL.
217-6720
(65) VALVE
6E-1291
(79) VALVE - CHECK
4T-5896
(93) VALVE -
PRESSURE REDUCING
185-1897
(109) VALVE -
SHUTTLE
4T-1860
(87) VALVE GP - CONTROL
2 FUNCTION
222-4436
3 FUNCTION
291-8508
(98) VALVE GP -
RLF, LINE RLF
LIFT CYL. R.E.
129-8293
(97) VALVE GP -
RLF, LINE RLF
LIFT CYL. H.E.
144-0221
(99) VALVE GP -
RLF, LINE RLF
TILT CYL. H.E.
117-0160
(100) VALVE GP -
RLF, LINE RLF
TILT CYL. R.E.
334-0895
(101) VALVE GP -
RLF, LINE, AUX.
172-5481
(67) VALVE
102-4156
(66) VALVE
102-4156
(68) VALVE
102-4156
(96) VALVE GP -
RELIEF
334-8332
(35) MANIFOLD GP -
CONTROL
322-3793
(107) VALVE GP -
RIDE CONTROL
259-6275
(115) VALVE GP - SOL.
24V, RIDE CONTROL
152-8340
(39) PLUG - ORIFICE
8J-6815
(110) VALVE GP -
SHUTTLE
141-1481
(74) VALVE GP -
CHECK
9T-1013
(116) VALVE GP - SOLENOID
LOAD SENSING
173-7455
(113) VALVE GP - SOL.
24V, HYDRAULIC LOCKOUT
149-2610
(112) VALVE GP - SOL.
24 VOLT
151-7455
(91) VALVE GP -
MANUAL
112-1817
(27) FITTING -
QUICK DISCONNECT
6V-3965
(56) SENSOR GP -
PRESSURE
349-1178
(43) PUMP GP - IMPLEMENT
346-6095
(34) IMPELLER
146-8990
(12) COIL AS
326-5212
(26) FITTING -
QUICK DISCONNECT
6V-3965
22) FILTER GP -
CASE DRAIN
IMPLEMENT PUMP
166-4647
(16) CYLINDER GP -
LIFT, LEFT HAND
173-8613
LIFT, LEFT HAND
BLOCKER HANDLER
309-9547
(17) CYLINDER GP -
LIFT, RIGHT HAND
173-8612
LIFT, RIGHT HAND
BLOCKER HANDLER
309-9546
(19) CYLINDER GP -
TILT
271-6441
TILT
231-1955
TILT
BLOCKER HANDLER
309-9546
(88) VALVE GP - CONTROL
TILT REGENERATION
318-2925
(6) ACTUATOR GP-
PILOT CONTROL
PROPORTIONAL SOL.
217-6719
(69) VALVE
153-9990
(10) ADAPTER -
ORIFICE
122-2222
(57) SENSOR GP -
PRESSURE
221-3416
(25) FITTING - QUICK DISCONNECT
6V-3965
(18) CYLINDER GP -
STEERING
288-0568
(36) MANIFOLD GP -
HYDRAULIC
326-3803
(104) VALVE GP - RELIEF
STEERING CYL. CROSSOVER
9T-7419
(111) VALVE GP - SHUTTLE
PUMP PILOT
4T-1860
(105) VALVE GP - RELIEF
STEERING CYL. CROSSOVER
9T-7419
(95) VALVE GP - RELIEF
6E-6188
(94) VALVE GP -
PRESSURE REDUCING
STR PILOT OIL REG.
6E-4286
(84) VALVE GP -
CHECK,
STEERING PILOT
9T-3096
(53) SCREEN AS-
307-6457
(40) PLUG - PIPE
1T-0936
(86) VALVE GP -
STEERING QUAD
149-4617
(118) VALVE GP -
STEERING
NEUTRALIZER
296-5662
(92) VALVE GP -
PILOT
STIC STEERING
249-5615
(46) PUMP GP -
STEERING
153-9624
(33) FITTING -
QUICK
DISCONNECT
6V-3965
(119) VALVE GP -
STR PMP CNTRL
PRESS.,
FLOW COMP.
176-7521
(120) VALVE GP -
STR PMP CNTRL
PRESS.,
FLOW COMP.
176-7520
(32) FITTING -
QUICK
DISCONNECT
6V-3965
(108) VALVE GP -
SEL./ PRESS. CNTRL
(SEC. STR)
6E-5566
(117) VALVE GP -
STEERING
301-4599
STEERING, WITH SEC. STR
301-4602
(71) VALVE - DIVERTER
SECONDARY STEERING
2U-7345
(103) VALVE GP - RELIEF
SECONDARY STEERING
6E-3986
(45) PUMP GP -
SECONDARY STEERING
150-7585
(23) FILTER GP - OIL
CASE DRAIN
STEERING
166-4647
(63) TANK AS -
HYDRAULIC
153-3602
(49) SCREEN AS
9T-9227
(52) SCREEN AS
7J-2656
(51) SCREEN AS
7J-2656
(48) SCREEN AS
9T-9227
(50) SCREEN AS
7J-2656
(47) SCREEN
DIFFUSER
178-0182
(64) TUBE
1U-1570
(54) SENSOR GP -
TEMP., HYDR. OIL
288-8390
(62) TANK AS -
EXPANSION
220-2948
(70) VALVE
BREAKER RELIEF
9T-0818
BREAKER RELIEF
EU ATTCH
220-0812
(21) FILTER GP - OIL
CASE DRAIN
FAN
166-4647
(42) PUMP GP -
HYDRAULIC FAN
228-3636
HIGH AMB. TEMP
228-3638
(30) FITTING -
QUICK
DSCNNCT
6V-3965
(90) VALVE GP -
FAN PMP CNTRL
PRESS.,
FLOW COMP.
207-0695
(29) FITTING -
QUICK
DISCONNECT
6V-3965
(89) VALVE GP -
DEMAND FAN
191-8735
(44) PUMP GP -
PILOT, BRAKE
177-8924
PILOT, BRAKE,
AXLE OIL CLR FAN
258-5060
(80) VALVE GP -
CHECK
AIR PURGE
3G-8607
(28) FITTING -
QUICK
DSCNNCT
6V-3965
(83) VALVE GP -
CHECK
HYD OIL CLR BYPASS
6E-1454
(14) COOLER GP -
HYDRAULIC OIL
164-0058
(38) MOTOR GP -
HYDRAULIC FAN
213-5268
(75) VALVE AS -
CHECK
FAN MTR ANTI-CAVITATION
9T-3752
(58) SWITCH AS -
PRESSURE
FILTER BYPASS
339-4361
(72) VALVE -
FLUID SAMPLING
8C-3446
20) FILTER GP -
OIL, BRAKE
287-8402
(31) FITTING -
QUICK
DSCNNCT
6V-3965
(102) VALVE GP -
RELIEF, PILOT
276-3650
(106) VALVE GP -
RELIEF,
STEERING IMPLEMENT, PILOT
276-3649
(73) VALVE GP -
CHECK
9T-1013
(55) SENSOR GP -
TEMP., AXLE OIL
131-0427
(13) CONTROL GP
FOOT BRAKE
169-8258
(78) VALVE GP
BRAKE CONTROL, SERVICE
200-0866
(59) SWITCH AS -
PRESSURE,
ACCUMULATOR CHARGING
174-4312
(76) VALVE GP
ACCUMULATOR CHARGING
235-0251
(77) VALVE GP
BRAKE CONTROL, PARKING
106-1774
(60) SWITCH AS -
PRESSURE,
PARKING BRAKE OIL
174-4312
(11) BRAKE GP
PARKING
174-1552
(41) PUMP GP -
AXLE OIL COOLER
292-9912
24) FILTER GP - OIL
AXLE OIL COOLER
230-3633
(114) VALVE GP - SOLENOID
24V, AXLE OIL COOLER
149-2610
(81) VALVE GP - CHECK
AXLE OIL COOLER
FAN ANTI-CAVITATION
9T-5134
(15) CORE AS -
AXLE OIL COOLER
173-6753
(37) MOTOR GP -
AXLE OIL COOLER FAN
178-1602
(82) VALVE GP - CHECK
AXLE OIL COOLER
FAN ANTI-CAVITATION
9T-3752
(85) VLV GP -
CHCK,
STR PLT
104-7108
(61) TANK AS -
152-3870
©
2010 Caterpillar, All Rights Reserved
BRAKES AND RAX COOLING VIEW
NN
MM
FF EE
SOS
AA
CC
114
106
102
82 81
80
78
77
76
72
60
59
58
55
55
4441
37
31
28
24
20
15
13
11
1
VIEW ALL CALLOUTS
2010 Caterpillar, All Rights Reserved
©
HYDRAULIC AND EXPANSION TANKS VIEW
70
64
62
52
51
50
49
48
47
VIEW ALL CALLOUTS
©
2010 Caterpillar, All Rights Reserved
RIGHT SIDE VIEW
KK LL
JJ
II
HH
DD
GG
116
115
113 112
110
109
107
101
100
99
98
97
96
93
91
90
89
88
87
83
79
75
74
73
69
68
67
66 65
63
61
57
56
43
42
39
38
35
34
30
29
27
26
25 25
22
21
19
17
16
14
12
10
9
8
7
6
5
4
3
2
VIEW ALL CALLOUTS
©
2010 Caterpillar, All Rights Reserved
STEERING, LEFT SIDE VIEW
BB
120 119
118
117
111
108
105
104
103
95
94
92
8685
84
71
54
53
46
45
40
36
33
3223
18
VIEW ALL CALLOUTS
