180861176 manual-operacion-mantenimiento-cargador-frontal-994-caterpillar (1)
Cargador Frontal Serie 950 g II
4
RENR4322-03 VOL 1 24 Page, Volume 1 RENR4322-03 May 2005 950G Series II and 962G Series II Hydraulic System Wheel Loader © 2005 Caterpillar All Rights Reserved Printed in U.S.A. 950G II: AYL1-UP AYS1-UP AXX1-UP BAA1-UP 962G II: AXY1-UP BAB1-UP BAC1-UP BAD1-UP Volume 1: Pilot Hydraulics and HMU Steering Volume 2: Electrohydraulic and Command Control Steering 950G II: AYB1-UP AYD1-UP AXR1-UP 962G II: AYE1-UP AYG1-UP AXS1-UP 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 PEDAL GENERAL 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 FLUID POWER SYMBOLS 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 ACTING SINGLE 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 AB PT AB PT SHIFTED POSITION INFINITE POSITION CONTROL VALVES ATTACHMENT MANUAL SHUTOFF SHUTTLE PILOT CONTROLLED Hydraulic Symbols (Electrical) Electrical Symbols Table 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 T Pressure Symbol Temperature Symbol Level Symbol Flow Symbol Electrical Symbols (Electrical) 9, 10 3 13 AA, BB 5, DD 6, 7, 8 4 11, 12 24, 25, 26, 27, 28, 29, 31, 34, 35, EE 1, 14, 15, 16, 17, 18, 19, 20, 21, 22, 30, 32 23, CC 58, 63, 64 67, 74 49, 54, 55 45, 46, 47, 70, 71, 72, 73 57, 59, 62 68, 69, LL 33, 36, 37, 38, 39, 40, 41, 44, FF, GG 61, 65, 66, 74, HH 48 50, 51, 52, 53, 56, 60, JJ 42, 43 Item No. Component 1 2 3 4 5 6 7 8 9 10 11 Schematic Location 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 A3 A7 35 37 38 39 40 41 Tilt Cylinder Auxiliary Cylinders @ Lift Cylinders Front Service Brakes Left Pedal Assembly Right Pedal Assembly Front Service Brakes Accumulator Rear Service Brakes Accumulator Parking Brake Parking Brake Actuator 36 A1 A2 A4 A5 A6 A4 Main Control Valve % Accumulator (Ride Control) # Shuttle Valve (Ride Control) # Line Relief Valve (Tilt Cylinder Head End) Line Relief Valve (Tilt Cylinder Rod End) A5 A1 A2 A2 B4 B4 B5 B5 B6 D6 Line Relief Valve (Aux. Cylinder Head End) @ Line Relief Valve (Aux. Cylinder Rod End) @ D6 C1 B7 B7 Pressure Switch (Parking Brake) B6 Shuttle Valve (Accumulator Charge) Check Valve (Accumulator Charge) B5 B5 Proirity Stage Valve (Accumulator Charge) Rear Service Brakes Solenoid Valve (Ride Control) # B4 Check Valve (Ride Control) # Piloted Operated Check Valve (Float) Relief Valve (Ride Control Diverter Valve) # Pressure Switch (Steering Diverter Valve) D3 Gear Motor (Hydraulic Fan) D2 D6 Secondary Reducing Valve (Pilot Manifold) D1 Check Valve (Steering Valve) D6 Directional Spool (Steering Valve) Selector Spool (Steering Valve) Shuttle Valve (Pilot Manifold) C4 Float Valve (Pilot Manifold) C2 Pilot Control Valve % C4 Connector (Orifice 1.7MM) Ball Valve (Implement Lockout) C3 Primary Reducing Valve (Pilot Manifold) C2 C6 Relief Valve (Accumulator Charge) C5 Strainers (Pilot Manifold) C1 Main Relief Valve B6 Spool (Ride Control Diverter Valve) B4 Accumulator Charge Valve (Braking) Brake Valve (Parking) Priority Valve (Brake Accumulator Charge) Pressure Switch (Service Brake Oil) Cylinders (Steering) Brake Control Valve (SERVICE) 950G II and 962G II Hydraulic Component Locations 45 46 47 44 48 49 50 C3, C4 42 43 Cylinder (Quick Coupler) Diverter Valve (Quick Coupler) D6 D6 Schematic Location AA BB CC DD Pressure Tap Description Tilt Cylinder Rod End Pressure Tilt Cylinder Head End Pressure Rear Service Brake Pressure Front Service Brake Pressure Service Brake Accumulator Pressure Implement Pilot Pump Pressure Implement Pump Pressure Fluid Sampling Valve Steering Pump Pressure Steering Signal Pressure A5 C6 C4 D1 E3 E5 E2 F4 A3 EE FF GG HH JJ KK LL Pressure Tap Locations Hydraulic Fan Pump Pressure * Secondary Steering is an optional attachment. # Ride Control is an optional attachment. @ Auxiliary Cylinders are an optional attachment. % The one stem valve (third function) is an optional attachment field conversion. The three stem valve is an optional attachment. The two stem valve is standard. F3 F3 F6 F5 F4 F1 E1 E2 Relief Valve (Secondary Steering Pump) * F3 Hydraulic Tank F5 F4 F3 Strainer (Hydraulic Tank) F1 Breaker Relief Valve F1 F1 F3 Oil Filter (Hydraulic) F2 Pressure Switch (Secondary Steering) * E4 Piston Pump (Hydraulic Fan) E2 Solenoid Valve (Hydraulic Fan) E3 Connector (Orifice 1.6MM) E4 Hydraulic Oil Cooler E2 Check Valve (Hydraulic Oil Cooler Bypass) D5 D4 D4 Steering Diverter Valve Make-up Check Valves (Steering) Check Valve (Steering) Crossover Relief Valve (Steering) Control Valve (Steering) Metering Pump (Steering) Secondary Steering Pump and Electric Motor Pressure and Flow Compensator (Hyd Fan) Vane Pump (Implement) Vane Pump (Pilot/Braking) Steering Neutralizer Valve (Left) Steering Neutralizer Valve (Right) Piston Pump (Steering) Backup Relief Valve (Steering) 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Item No. Component 950G II and 962G II Hydraulic Components 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Relief Valve Check Valve Solenoid Valve Check Valve Solenoid Valve Valve Diverter Valve Diverter Valve Relief Valve Relief Valve Valve Cooler Piston Motor Reversing Valve Filter Screen Piston Pump Reversing Fan Attachment Item No. Component Reversing Fan Attachment Note: Installed on the following machines 950G II - AXX and 962G II - AXY 228-8530 Media References Parts Manual Systems Power Train Engine SEBP3494 SENR9617 Systems Operation Testing and Adjusting RENR4308 RENR4309 RENR4310 Systems Operation (Steering) RENR4312 RENR4313 950G II AYB Specifications Specifications (Steering) 962G II AYE 950G II AYL 962G II BAB SEBP3495 SEBP3497 SEBP3496 Troubleshooting Media Number 950G II AXR 950G II AXX 962G II AXS 962G II AXY SEBP3352 SEBP3280 SEBP3281 SEBP3285 950G II BAA 962G II BAD SEBP3492 SEBP3339 Systems (Continued) Test and Adjusting (Steering) RENR4314 RENR4315 RENR4316 Specifications (Braking) Specifications (Machine Systems) System Operation (Braking) Testing and Adjusting (Braking) RENR4317 RENR4362 RENR6042 Operation & Maintenance Manual English RENR4318 RENR4319 RENR4320 RENR4321 Specifications (Electrohydraulic/Pilot) Systems Operation (Electrohydraulic/Pilot) RENR4324 Schematic (Pilot System) Schematic (Electrohydraulic System) SEBU7459 Testing and Adjusting (Hydraulic) Testing and Adjusting (Electrohydraulic) Electrical System Media Number MACHINE COMPONENT LOCATIONS
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Transcript of Cargador Frontal Serie 950 g II
RE
NR
4322-0
3 V
OL
12
4 P
ag
e,
Volume 1
RENR4322-03May 2005
950G Series II and 962G Series II
Hydraulic SystemWheel Loader
©2005 CaterpillarAll Rights Reserved
Printed in U.S.A.
950G II:AYL1-UPAYS1-UPAXX1-UPBAA1-UP
962G II:AXY1-UPBAB1-UPBAC1-UPBAD1-UP
Volume 1: Pilot Hydraulics and HMU Steering
Volume 2: Electrohydraulic and Command Control Steering950G II:AYB1-UPAYD1-UPAXR1-UP
962G II:AYE1-UPAYG1-UPAXS1-UP
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 RESTRICTIONVARIABLE and PRESSURE
COMPENSATED
PRESSURECOMPENSATION
PUMP: VARIABLE andPRESSURE COMPENSATED
ENERGY TRIANGLESHYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONERPUMP or MOTOR
FLUID POWER SYMBOLS
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLSRELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED COMPLETE INTERNALSUPPLY 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
BASICSYMBOL
SPRINGLOADED
CHECK VALVES
TWOPOSITION
INFINITEPOSITIONING
FLOW IN ONEDIRECTION
FLOW ALLOWED INEITHER DIRECTION
THREEPOSITION
CROSSFLOW
PARALLELFLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P TSHIFTED POSITION INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOTCONTROLLED
Hydraulic Symbols (Electrical)
Electrical Symbols Table
325-AG135 PK-14
Circuit IdentificationNumber
Wire Color Wire Gauge
Harness identification codeThis example indicateswire 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 ColorCircuit Number Identification
B A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer(Fluid)
Transducer(Gas / Air)
G
Generator
Electrical WirePressure Switch
MElectric Motor
Pressure Switch (Adjustable)
Temperature Switch
T
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
Electrical Symbols (Electrical)
9, 10
3
13
AA, BB
5, DD
6, 7, 8
411, 12
24, 25, 26, 27, 28, 29, 31, 34, 35, EE 1, 14, 15, 16, 17, 18, 19, 20, 21, 22, 30, 32
23, CC
58, 63, 6467, 74
49, 54, 55
45, 46, 47, 70, 71, 72, 73
57, 59, 62 68, 69, LL
33, 36, 37, 38, 39, 40, 41, 44, FF, GG
61, 65, 66, 74, HH 48 50, 51, 52, 53, 56, 60, JJ
42, 43
ItemNo. Component
123
456789
1011
SchematicLocation
121314151617
1819
2021222324
25
26
2728293031323334
A3
A7
35
3738394041
Tilt CylinderAuxiliary Cylinders @
Lift CylindersFront Service BrakesLeft Pedal AssemblyRight Pedal Assembly
Front Service Brakes Accumulator
Rear Service Brakes AccumulatorParking BrakeParking Brake Actuator
36
A1A2
A4A5
A6
A4
Main Control Valve %
Accumulator (Ride Control) #
Shuttle Valve (Ride Control) #
Line Relief Valve (Tilt Cylinder Head End)
Line Relief Valve (Tilt Cylinder Rod End)
A5
A1A2
A2
B4
B4
B5B5
B6
D6
Line Relief Valve (Aux. Cylinder Head End) @Line Relief Valve (Aux. Cylinder Rod End) @
D6
C1
B7
B7Pressure Switch (Parking Brake)
B6Shuttle Valve (Accumulator Charge)
Check Valve (Accumulator Charge) B5
B5Proirity Stage Valve (Accumulator Charge)
Rear Service BrakesSolenoid Valve (Ride Control) #
B4Check Valve (Ride Control) #Piloted Operated Check Valve (Float)
Relief Valve (Ride Control Diverter Valve) #
Pressure Switch (Steering Diverter Valve) D3
Gear Motor (Hydraulic Fan) D2D6
Secondary Reducing Valve (Pilot Manifold) D1
Check Valve (Steering Valve) D6Directional Spool (Steering Valve)Selector Spool (Steering Valve)
Shuttle Valve (Pilot Manifold) C4Float Valve (Pilot Manifold) C2Pilot Control Valve % C4Connector (Orifice 1.7MM)Ball Valve (Implement Lockout) C3
Primary Reducing Valve (Pilot Manifold) C2C6
Relief Valve (Accumulator Charge) C5Strainers (Pilot Manifold)
C1Main Relief ValveB6
Spool (Ride Control Diverter Valve) B4
Accumulator Charge Valve (Braking)Brake Valve (Parking)
Priority Valve (Brake Accumulator Charge)
Pressure Switch (Service Brake Oil)
Cylinders (Steering)
Brake Control Valve (SERVICE)
950G II and 962G II Hydraulic Component Locations
4546
47
44
48
49
50
C3, C4
4243
Cylinder (Quick Coupler)Diverter Valve (Quick Coupler)
D6D6
SchematicLocation
AABBCCDD
PressureTap Description
Tilt Cylinder Rod End PressureTilt Cylinder Head End PressureRear Service Brake PressureFront Service Brake PressureService Brake Accumulator PressureImplement Pilot Pump PressureImplement Pump PressureFluid Sampling ValveSteering Pump Pressure
Steering Signal Pressure
A5
C6
C4D1E3
E5
E2
F4
A3
EEFFGG
HH
JJKKLL
Pressure Tap Locations
Hydraulic Fan Pump Pressure
* Secondary Steering is an optional attachment.# Ride Control is an optional attachment.@ Auxiliary Cylinders are an optional attachment.
% The one stem valve (third function) is an optional attachment field conversion. The three stem valve is an optional attachment. The two stem valve is standard.
F3F3
F6
F5
F4
F1
E1
E2
Relief Valve (Secondary Steering Pump) * F3
Hydraulic Tank
F5
F4
F3
Strainer (Hydraulic Tank) F1Breaker Relief Valve F1
F1
F3Oil Filter (Hydraulic) F2Pressure Switch (Secondary Steering) * E4Piston Pump (Hydraulic Fan) E2
Solenoid Valve (Hydraulic Fan) E3Connector (Orifice 1.6MM) E4Hydraulic Oil Cooler E2Check Valve (Hydraulic Oil Cooler Bypass)
D5D4D4Steering Diverter Valve
Make-up Check Valves (Steering)
Check Valve (Steering)
Crossover Relief Valve (Steering)Control Valve (Steering)
Metering Pump (Steering)Secondary Steering Pump and Electric Motor
Pressure and Flow Compensator (Hyd Fan)Vane Pump (Implement)
Vane Pump (Pilot/Braking)
Steering Neutralizer Valve (Left)
Steering Neutralizer Valve (Right)
Piston Pump (Steering)
Backup Relief Valve (Steering)
5152535455565758596061626364656667
68697071727374
75
1 2 34
5 6
7
8
9 10
1112
13 14
15 16
17
ItemNo. Component
950G II and 962G II Hydraulic Components
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Relief Valve
Check Valve
Solenoid Valve
Check Valve
Solenoid Valve
Valve
Diverter Valve
Diverter Valve
Relief Valve
Relief Valve
Valve
Cooler
Piston Motor
Reversing Valve
Filter
Screen
Piston Pump
Reversing Fan Attachment
ItemNo. Component
Reversing Fan AttachmentNote: Installed on the following machines
950G II - AXX and 962G II - AXY
228-8530
Media References
Parts Manual
Systems
Power Train
Engine
SEBP3494
SENR9617
Systems Operation
Testing and Adjusting
RENR4308RENR4309RENR4310
Systems Operation (Steering)RENR4312RENR4313
950G II AYB
Specifications
Specifications (Steering)
962G II AYE950G II AYL
962G II BABSEBP3495
SEBP3497SEBP3496
Troubleshooting
MediaNumber
950G II AXR
950G II AXX
962G II AXS962G II AXY
SEBP3352SEBP3280
SEBP3281
SEBP3285950G II BAA 962G II BADSEBP3492 SEBP3339
Systems (Continued)Test and Adjusting (Steering) RENR4314
RENR4315RENR4316
Specifications (Braking)
Specifications (Machine Systems)
System Operation (Braking)
Testing and Adjusting (Braking) RENR4317
RENR4362
RENR6042
Operation & Maintenance ManualEnglish
RENR4318RENR4319RENR4320RENR4321
Specifications (Electrohydraulic/Pilot)Systems Operation (Electrohydraulic/Pilot)
RENR4324Schematic (Pilot System)
Schematic (Electrohydraulic System)
SEBU7459
Testing and Adjusting (Hydraulic)Testing and Adjusting (Electrohydraulic)
Electrical System
MediaNumber
MACHINE COMPONENT LOCATIONS
RE
NR
4322-0
3 V
OL
12
4 P
ag
e,
B/W
A
B
C
D
E
F
1 2 3 4 5 6 7
A
B
C
D
E
F
7654321
1 2 4 5AA
BBCC
DD
6 7 8 9 10 11 123
EEFF
GG
LL
JJ
M
KK
Implement Pressure
Pilot Pressure
Components
Return Lines
13
14
15 16 17 18
HH
20
21
22 23 24 25 26 27 28 29
30
32 33 35
31
34
36 37 38 38 38 39
4041
19
49
54 55
58
63 64
65
61
6666
59
57
67
74
62
44
75
60
68
50 51 52
56
69 70
71 72 73
42
43
45 46
4748
53
LINEAR PATTERNS
g00984677
THIS SCHEMATIC IS FOR THE 950G AND 962G SERIES II WHEEL LOADERPART #: 187-6675 CHG 01Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.
RE
NR
4322-0
3 V
OL
22
4 P
ag
e,
Volume 2
RENR4322-03May 2005
950G Series II and 962G Series II
Hydraulic SystemWheel Loader
©2005 CaterpillarAll Rights Reserved
Printed in U.S.A.
950G II:AYL1-UPAYS1-UPAXX1-UPBAA1-UP
962G II:AXY1-UPBAB1-UPBAC1-UPBAD1-UP
Volume 1: Pilot Hydraulics and HMU Steering
Volume 2: Electrohydraulic and Command Control Steering950G II:AYB1-UPAYD1-UPAXR1-UP
962G II:AYE1-UPAYG1-UPAXS1-UP
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 RESTRICTIONVARIABLE and PRESSURE
COMPENSATED
PRESSURECOMPENSATION
PUMP: VARIABLE andPRESSURE COMPENSATED
ENERGY TRIANGLESHYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONERPUMP or MOTOR
FLUID POWER SYMBOLS
FIXEDDISPLACEMENT
VARIABLE DISPLACEMENTNON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLSRELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED COMPLETE INTERNALSUPPLY 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
BASICSYMBOL
SPRINGLOADED
CHECK VALVES
TWOPOSITION
INFINITEPOSITIONING
FLOW IN ONEDIRECTION
FLOW ALLOWED INEITHER DIRECTION
THREEPOSITION
CROSSFLOW
PARALLELFLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P TSHIFTED POSITION INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOTCONTROLLED
Hydraulic Symbols (Electrical)
Electrical Symbols Table
325-AG135 PK-14
Circuit IdentificationNumber
Wire Color Wire Gauge
Harness identification codeThis example indicateswire 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 ColorCircuit Number Identification
B A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer(Fluid)
Transducer(Gas / Air)
G
Generator
Electrical WirePressure Switch
MElectric Motor
Pressure Switch (Adjustable)
Temperature Switch
T
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
Electrical Symbols (Electrical)
9, 10
3AA, BB
5, DD
6, 7, 8
4
23, CC 52
1 2 34
5 6
7
8
9 10
1112
13 14
15 16
17
ItemNo. Component
950G II and 962G II Hydraulic Components
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Relief Valve
Check Valve
Solenoid Valve
Check Valve
Solenoid Valve
Valve
Diverter Valve
Diverter Valve
Relief Valve
Relief Valve
Valve
Cooler
Piston Motor
Reversing Valve
Filter
Screen
Piston Pump
Reversing Fan Attachment
ItemNo. Component
Reversing Fan AttachmentNote: Installed on the following machines
950G II - AXR and 962G II - AXS
228-8530
11, 12
13
14, 15
1, 14, 15, 16, 17, 18, 19, 20, 21, 26, 27, 28, 29, 30, 31,33, 34, 35, 36, 38, 39, 41, 42, 43, 44, 47, 48, 49, 50
64, 65, 66, RR
70, 73, 7481, 86
23, 24, 25, 32, 37, 39, 40, 45, 46, MM59 51, 54, EE, FF, GG, HH, JJ, KK, LL, NN, PP
57, 58, 60, 61, 62, 67, 72, 7576, 78, 79, 80, 83, SS, WW, XX 77
63, 68, 69, TT 56 55, UU, VV
71, 82, 84, 85
52, 53
SchematicLocation
AABBCCDD
Tap Description
Tilt Cylinder Rod End PressureTilt Cylinder Head End PressureRear Service Brake PressureFront Service Brake Pressure
Service Brake Accumulator Pressure
EEFFGGHH
JJKKLL
MMNNPP
Steering Control ValveNeutral Pilot Pressure
B2
B3
E2E6E3
E4
F4F6
Fluid Sampling ValveRRSSTT
UU
VVWWXX
A3
A5
B1
B2
B3B4B5
B6D1E1
Hydraulic Fan Pump Pressure
F5
Pilot Pressure (Steering)Pilot Pressure (Steering )
Pump Pressure (Steering)Pump Pressure (Implement)
Pump Signal Pressure (Steering)
Pilot Pressure (Steering)
Auxiliary Pilot Pump Pressure (Open)Auxiliary Pilot Pump Pressure (Close)
Tilt Pilot Pump Pressure (Tiltback)
Tilt Pilot Pump Pressure (Dump)
Lift Pilot Pump Pressure (Lower)
Lift Pilot Pump Pressure (Raise)Pilot Pressure (Ride Control)
Media References
Parts Manual
Systems
Power Train
Engine
SEBP3494
SENR9617
Systems Operation
Testing and Adjusting
RENR4308RENR4309RENR4310
Systems Operation (Steering)RENR4312RENR4313
950G II AYB
Specifications
Specifications (Steering)
962G II AYE950G II AYL
962G II BABSEBP3495
SEBP3497SEBP3496
Troubleshooting
MediaNumber
950G II and 962G II Hydraulic Pressure Tap LocationsPressure
950G II AXR
950G II AXX
962G II AXS962G II AXY
SEBP3352SEBP3280
SEBP3281
SEBP3285950G II BAA 962G II BADSEBP3492 SEBP3339
ItemNo. Component
123
456
789
1011
SchematicLocation
1213
1415
1617
1819
202122232425
26
* Secondary Steering is an optional attachment.
A3
# Ride Control is an optional attachment.
Tilt CylinderAuxiliary Cylinders @
Lift Cylinders
Left Pedal Assembly
Right Pedal Assembly
Front Service Brakes Accumulator
Rear Service Brakes AccumulatorParking BrakeParking Brake Actuator
Ride Control Accumulator #
A1A2
A4
A5A6
B5
Main Control Valve %
@ Auxiliary Cylinders are an optional attachment.
% The one stem valve (third function) is an The three stem valve is an optional attachment.The two stem valve is standard.optional attachment field conversion.
28
2930
31
32
343536
3738
394041
4243
4445
46
47
5051
Accumulator (Ride Control) #
Shuttle Valve (Ride Control) #
Line Relief Valve (Aux. Cylinder Head End) @Line Relief Valve (Aux. Cylinder Rod End) @
Line Relief Valve (Tilt Cylinder Rod End)
Line Relief Valve (Tilt Cylinder Head End)
A6
A6A7A7A7
A7A5
A5
A5A1
F1A2
A3Pilot Operated Check Valve (Float) B4Relief Valve (Ride Control) #Rear Service Brakes B5
Pressure Switch (Parking Brake) B7Check Valve (Accumulator Charge) B6
Shuttle Valve (Accumulator Charge) B6
Solenoid Valve (Ride Control) @ B5
Auxiliary Spool (Main Control Valve) @Tilt Spool (Main Control Valve) B2
B1
Lift Spool (Main Control Valve) B3
Spool (Ride Control) # B4
Resolver Valve (Dead Engine Lower) B4
Priority Valve (Accumulator Charge Pilot) C6Primary Reducing Valve (Pilot Manifold)33 C2
Proportional Valve (Tilt Dump) C2
Proportional Valve (Lift Lower) C3
Proportional Valve (Auxiliary Lower) C4
Main Relief Valve C1
Relief Valve (Accumulator Charge) C5
Piority Stage Valve (Accumulator Charge) C6
Accumulator Charging Valve (Braking) C6C6Strainers (Pilot Manifold) C1Solenoid Valve (Pilot Pressure Supply) C2
C1
Float Valve (Pilot Manifold) C4Pressure Switch (Service Brakes) C6
Parking Brake Valve C7Proportional Valve (Tilt Tiltback) C3
48
49Proportional Valve (Lift Raise) C3Proportional Valve (Auxiliary Raise) C4
Secondary Reducing Valve (Pilot Manifold) D2Shuttle Valve (Pilot Manifold) D2
Steering Cylinders D7
Pilot Valve (Steering) D4
Wheel (Steering Assembly) D4
Steering Oil Screen Group D5
Check Valve (Steering Quad)
E5
Brake Control Valve (Service)
Front Service Brakes
E5
Control Valve (Steering)E5
Crossover Relief Valve (Steering) E6
Resolver Valve (Steering) E7Proportional Valve (Hydraulic Fan) E3
Check Valve (Hydraulic Oil Cooler Bypass)E2Hydraulic Oil CoolerE2
Gear Motor (Hydraulic Fan) E2Check Valves (Steering Valve) E7Piston Pump (Hydraulic Fan)
E3Pressure and Flow Compensator (Hyd Fan)E3
Piston Pump (Steering) E1
Oil Filter (Hydraulic) E2
Shuttle Valve (Steering) F6Vane Pump (Implement)
F1Vane Pump (Pilot/Braking)
F1
Resolver Valve (Steering) F4Diverter Valve (Steering) F5Pressure Switch (Secondary Steering) * F4Right Neutralizer Valve (Steering) E5
Left Neutralizer Valve (Steering)
Pressure Reducing Valve (Steering) F6Backup Relief Valve (Steering) F7
F1
Secondary Steering Pump and Electric Motor *
Breaker Relief ValveF1
Pressure Switch (Steering Pump) F5
Hydraulic Tank F1Strainers (Hydraulic Tank) F2
Relief Valve (Secondary Steering Pump) * F4
Ball Valve (Dead Battery, Lift Arm Lower)
950G II and 962G II Hydraulic Component Locations
5455
5657
58
5253
D6
D6
Cylinder (Quick Coupler)
Diverter Valve (Quick Coupler)
59606162
636465
66
67
6869707172
73747576
7778798081
8283848586
27
Chart A
Systems (Continued)Test and Adjusting (Steering) RENR4314
RENR4315RENR4316
Specifications (Braking)
Specifications (Machine Systems)
System Operation (Braking)
Testing and Adjusting (Braking) RENR4317
RENR4362
RENR6042
Operation & Maintenance ManualEnglish
RENR4318RENR4319RENR4320RENR4321
Specifications (Electrohydraulic/Pilot)Systems Operation (Electrohydraulic/Pilot)
RENR4324Schematic (Pilot System)
Schematic (Electrohydraulic System)
SEBU7459
Testing and Adjusting (Hydraulic)Testing and Adjusting (Electrohydraulic)
Electrical System
MediaNumber
MACHINE COMPONENT LOCATIONS
RE
NR
4322-0
3 V
OL
22
4 P
ag
e,
B/W
A
B
C
D
E
F
1 2 3 4 5 6 7
A
B
C
D
E
F
G
7654321
AA
BB
CC
DD
EE FF GG HH JJ KK LL
MM
NN
PP
RR
TT
UU
VV
SS
WW
M
1
2 3 4 5 6 7
8
9 10 11 12
13
14 15
16 17 191820
22 23
25
26
27 28 29 30
31
32
33 34 35 363738 39 40
42
45
41
43 44
50 51
47 48 49
46
XX
24
64 65 66
63
68 69
71
70
73 74
82
8485
55 56
58 59
75
81
86
83
76 77 78 79
72
6160
57
62
67
80
52
53 54
g00986326
Implement Pressure
Pilot Pressure
Components
Return Lines
LINEAR PATTERNS
THIS SCHEMATIC IS FOR THE 950G AND 962G SERIES II WHEEL LOADERPART #: 187-6675 CHG 01Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.
