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8
AXLE OIL COOLER SUPPLY SUPPLY
AXLE
TO TRANSMISSI CONTROL
RESERVIOR
F
FRONT AXLE
B
AXLE OIL COOLER RETURN RETURN
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7
6
TO BRAKE LIGHTS TRANSMISSION CONTROL
NO
(63) VALVE GP OUTPUT PRESSURE 210-5587
(64) VALVE GP PARK BRAKE 106-1774 RELEASE APPLY
5
(53) ACTUATOR AS PARK BRAKE 154-8042
NC C
C
NC NO
C
D
TRANSMISSION CONTROL
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4
3
(67) CYLINDER GP QUICK COUPLER 311-1463
TILT CYLINDER (6) 966 STANDARD 356-2219 (7) 972 STANDARD 356-2220 (8) 966 HIGH LIFT 358-5189 (9) 972 HIGH LIFT 358-5190 (10) 966 LOGGER 356-2220
(30) VALVE GP SOLENOID (ANTI-DRIFT) 328-4314
(4) CYLINDER LIFT - (L 242-42
(28) VALVE GP RELIEF (LOGGER ATCH) 332-1985 (27) VALVE GP (30) VALVE GP RELIEF (TILT) SOLENOID 332-1985 (ANTI-DRIFT) 328-4314
(3 ( R
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2
YLINDER GP LIFT - (LH) 242-4274
1
(2) ACCUMULATOR RIDE CONTROL 325-7131
(5) CYLINDER GP LIFT - (RH) 242-4275
PORT B LEVER FORWARD, RIGHT HAND LINE ON BOOM (WHEN VIEWED FROM CAB) PORT A LEVER REARWARD, LEFT HAND LINE ON BOOM (WHEN VIEWED FROM CAB)
GP D T)
(32) VALVE GP SOLENOID (PRESSURE REDUCING)
(30) VALVE GP SOLENOID (ANTI-DRIFT) 328-4314
(32) VALVE GP SOLENOID (PRESSURE REDUCING)
(22) VALVE GP - RELIEF (AUX FUNCTION) IMPLEMENT VALVE GP 272-2334 (15) 2 FUNCTION W/O RIDE CONTROL 261-3945 (16) 2 FUNCTION W/ RIDE CONTROL (ATCH) 261-2337 (17) 3 FUNCTION W/O RIDE CONTROL (ATCH) 261-3972 (18) 3 FUNCTION W/ RIDE CONTROL (ATCH) 261-3338
F
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AXLE OIL COOLER RETURN
(52) ACCUMULATOR BRAKE 198-9841
(21) V
A1
A2
E G1
PS
(60) VALVE GP CHARGE (FAN DRIVE AND BRAKE) 352-1587
E1
MOTOR GP - FAN (57) 161-8919 (58) 334-6234 (ATCH)
F
(56) VALVE GP CHECK (COOLER BYPASS) 244-1426
(55) COOLER HYDRAULIC OIL 244-4498
D
(65) VALVE GP SAMPLING PORT 8C-3451
P
LS (59) PUMP GP FAN 254-5147
G7
G6
X (12) VALVE GP IMPLEMENT 292-8768
(61) VALVE GP CHECK (FILTER ANTIDRAINBACK) 307-5393
SOS (56) FILTER GP KIDNEY LOOP 330-9358
T
B
(69) PUMP GP TARNSMISSION 241-8686
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(20) VALVE GP BACKPRESSURE 353-7179
(21) VALVE GP - LOWER (DEAD ENGINE) 112-1817
IMPLEMENT RETURN QUICK COUPLER SUPPLY
T
IMPLEMENT LOAD SENSE SIGNAL
G3
IMPLEMENT LOAD SENSE RELIEF/PILOT RETURN IMPLEMENT PUMP DISCHARGE
) VALVE GP MPLEMENT 292-8768
G4 LS
GP ION 686
PRIMARY PILOT SUPPLY - CCS STEERING ATTACHMENT
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(ANTI-DRIFT) 328-4314
332-1985 A1
(21) VALVE GP MANUAL LOWER 112-1817
( R
(ANTI-DRIFT) 328-4314
B1
A2
E13
(24) VALVE GP RELIEF (MAKE UP LIFT) 234-4869
(32) VALVE GP SOLENOID (PRESSURE REDUCING) 313-7668
(68) VALVE GP QUICK COUPLER 180-8585
E8 RACK BACK
G2
RACK BACK
RAI
HOLD
HOL
LO
DUMP
E14 FLO
DUMP E7
(23) VALVE GP LOAD SENSE RELIEF 346-0474
T
(32) VALVE GP PRESSURE REDUCING 313-7668
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T) A2
(PRESSURE REDUCING) 313-7668
328-4314 B2
A3
B3
(PRESSURE REDUCING) 313-7668
B4
(17) 3 FUNCTION W/O RIDE CONTROL (ATCH) 261-3972 (18) 3 FUNCTION W/ RIDE CONTROL (ATCH) 261-3338 (19) 3 FUNCTION W/ RIDE CONTROL (LOGGER ATCH) 256-3644
A4
E9
E12
GP F LIFT) 9
E5
(1) ACCUMULATOR PILOT 355-9981
E6 E3
E10
(26) VALVE GP - RELIEF (RIDE CONTROL) 4T-7581
RAISE
RAISE
PORT A
G1 0
PORT A
E
E4
HOLD
HOLD
LOWER
PORT B
(31) VALVE GP PRESSURE REDUCING 335-1074
FLOAT
LOWER/ FLOAT
PORT B
E2
P
E11
(32) VALVE GP PRESSURE REDUCING 313-7668
(29) VALVE GP - SHUTTLE 235-6157
(32) VALVE GP PRESSURE REDUCING 313-7668
(25) VALVE GP MARGIN RELIEF 328-0730
D
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KIDNEY LOOP 330-9358
B
L
TARNSMISSION 241-8686
S
G12
) s e h c n i 8 2 x s e h c n i 9 3 : s n o i s n e m i D (
4 0 8 2 8 8 R N E e , R g a
P 0 3
(66) VALVE GP DIVERTER 237-8180
(11) FILTER GP CASE DRAIN 337-4102
(33) VALVE - MANUAL PUMP CASE FILL 8T-6907
C
(54) BREAKER VACUUM 220-0814 (3) BREATHER 258-2829
C (13) SCREEN - RETURN 9T-9227
REAR AXLE AXLE
RESERVIOR
B
(40) PUM SECOND STEERIN 275-8544
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ION 686
LS LS LS
(41) PUMP GP STEERING 241-9157
M P P
(40) PUMP GP SECONDARY STEERING (ATCH) 275-8544
P
(43) VALVE GP CHECK 141-2597
T T T
(14) TANK GP HYDRAULIC 340-5959
(34) CYLINDE STEERIN 314-9336
(50) VALVE GP - STEERING CROSSOVER RELIEF 111-7775
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(51 STEE
(36) NE HMU 296-56
4) CYLINDER GP STEERING 314-9336
(38) ORIF 108-2144 L
(49) VALVE GP - STEERING (CCS ATCH) 133-1728
R
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(51) VALVE GP STEERING (HMU) 142-3996 (50) VALVE GP STEERING CROSSOVER RELIEF 129-8222
PB B A
(35) CYLINDER GP STEERING 314-9336
PA
C P
HMU
T
(48) VALVE GP STEERING BACKUP RELIEF 132-5258 (36) NEUTRALIZER HMU 296-5662
(38) ORIFICE 108-2144 (39) PUMP GP HMU METERING 349-6093
B
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A
8
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CROSSOVER RELIEF 111-7775 (42) SCREEN (ATCH) 154-2883
(44) VALVE GP CHECK (CSS ATCH) 111-7775
B
G9 G10
(45) VALVE GP PILOT (CSS ATCH) 164-4116
PA
(37) NEUTRALIZER CCS (ATCH) 321-5283
G11
P
PB
(46) VALVE GP - PRESSURE REDUCING (ATCH) 114-1267
T
G8 (47) VALVE GP SHUTTLE (ATCH) 8J-6875
COMMAND CONTROL STEERING (ATTACHMENT)
7
6
5
A
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133-1728 B
A
LS
LS
T
G5
G5
P
T
P
LINE P
SOLENOID VALVE REFERENCE (48) VALVE GP - RELIEF STEERING BACKUP 132-5258
4
Pr
SOLENOID LOCATION
SOLENOID NAME
E1
FAN / BRAKE VALVE
DEMAND SPEED FAN SOLENOID
E2
IMPLEMENT VALVE - LIFT
LOWER SOLENOID
E3 E4
IMPLEMENT VALVE - LIFT IMPLEMENT VALVE - RIDE CONTROL
RAISE SOLENOID RIDE CONTROL BALANCE SOLENOID
E5
IMPLEMENT VALVE - RIDE CONTROL
RIDE CONTROL HEAD END CHECK SOLENOID
E6 E7
IMPLEMENT VALVE - RIDE CONTROL IMPLEMENT VALVE - TILT
RIDE CONTROL ROD END CHECK SOLENOID DUMP SOLENOID
Att
E8
IMPLEMENT VALVE - TILT
RACK BACK SOLENOID
Air
E9 E10
IMPLEMENT VALVE IMPLEMENT VALVE - 3RD FUNCTION
IMPLEMENT PILOT SUPPORT SOLENOID 3RD FUNCTION PORT A SOLENOID
E11
IMPLEMENT VALVE - 3RD FUNCTION
3RD FUNCTION PORT B SOLENOID
E12
IMPLEMENT VALVE - LIFT
LOWER ANTI-DRIFT SOLENOID
E13
IMPLEMENT VALVE - TILT
DUMP ANTI-DRIFT SOLENOID
E14
QUICK COUPLER VALVE
ENABLE SOLENOID
Pil Dr Co
3
CAL YY
Ta
52
Co
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HMU STEERING (STANDARD CONFIGURATION) HYDRAULIC CIRCUIT COLOR DESCRIPTIONS IMPLEMENT PILOT SUPPLY OIL IMPLEMENT PUMP OUTPUT TRANSMISSION PUMP PRIMARY STEERING PUMP CIRCUIT IMPLEMENT PUMP LOAD SENSE CIRCUIT STEERING CIRCUIT FAN PUMP CIRCUIT SUPPLY LINE QUICK COUPLER CIRCUIT BRAKE CONTROL CIRCUIT AUXILIARY CIRCUIT MAIN RELIEF VALVE LOAD SENSING CIRCUIT DRAIN / RETURN LINE TILT CYLINDER CIRCUIT LIFT CYLINDER CIRCUIT SECONDARY STEERING CIRCUIT BRAKE COOLING CIRCUIT ELECTRICAL CIRCUITS
INE PATTERNS
Pressure Line Pilot / Load Sensing Pressure Drain / Return Lines Component Group Attachment Air Line
THIS SCHEMATIC IS FOR THE 966H AND 972H WHEEL LOADER HYDRAULIC SYSTEM
CALLOUTS
MEDIA NUMBER: RENR8828-04 SCHEMATIC PART NUMBER: 242-0337, CHANGE: 10, VERSION: -
Taps (Pressure, Sampling, Sensor - by letter)
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.
Components (By number)
2
1
A
