924G WGX

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RENR6432-01 20 Page, (Dimensions: 39 inches x 24 inches) 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 Pressure Symbol Temperature Symbol Level Symbol Flow Symbol Electrical Symbols (Electrical) 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 T RENR6432-01 May 2008 924G and 924GZ Wheel Loader Hydraulic System DDA1-UP RTA1-UP RBB1-UP WMB1-UP WGX1-UP DFZ1-UP © 2008 Caterpillar All Rights Reserved Printed in U.S.A. 9 9 9 13 13 11 11 14 3 3 8 8 8 10 10 5 5 23 23 1 1 2 2 24 24 6 6 7 7 12 12 15 15 16 16 17 17 18 18 19 19 21 21 22 22 20 20 4 4 26 26 924G COMPONENT LOCATIONS 12 SOS OIL FILTER IMPLEMENT PUMP AA STEERING PUMP LOAD SENSE BB IMPLEMENT PUMP PRESSURE CC 23 ABOVE IMPLEMENT VALVES FOOT BRAKE FF 22 DD EE GG HH 14 Tap Locations Pressure and Sampling Tap Number Description Schematic Location AA Implement Pump Load Sense Pressure B-8 BB Steering Pump Load Sense Pressure B-8 CC Implement Pump Pressure C-6 DD Steering Pump Pressure B-7 EE Pilot Supply Pressure A-7 FF Front Brake Pressure B-9 GG Tilt Cylinder Rod End Pressure C-6 HH Tilt Cylinder Rod Head Pressure C-6 II Rear Axle Cooler Circuit Pressure B-9 SOS Hydraulic Oil Sampling Port (SOS) A-9 Note: Refer to Parts Manuals for your specific machine. COMPONENT LOCATIONS Description Part No. 924G Part No. 924GZ Machine Location Schematic Location Accumulator Gp -Brake 140-9251 140-9251 1 B-9,C-9 Accumulator Gp -Pilot 243-4398 243-4398 2 A-7 Accumulator Gp -Ride Control 223-9698 223-9698 3 D-7 Connector -Orifice 8C-0564 8C-0564 4 A-4 to A-6 Connector -Orifice 3E-2335 3E-2335 5 C-6 Cooler -Hydraulic Oil Cooler, Standard 239-7394 239-7394 6 A-9 Cooler -Hydraulic Oil Cooler, Heavt Dut 239-7395 239-7395 6 A-9 Cooler As -Dual Disc Axle Oil 205-3652 205-3652 7 B-9 Cylinder Gp -Lift 141-7483 152-4187 8 C-6 Cylinder Gp -Steering 142-6251 142-6251 9 E-9 Cylinder Gp -Tilt 268-9437 152-5306 10 C-6 Cylinder Gp -Coupler, Standard 190-3085 11 E-8 Cylinder Gp -Coupler, Wide 188-0982 11 E-8 Filter Gp -Element 126-1818 209-3149 209-3149 12 A-9 Hand Metering Unit 214-4153 214-4153 13 D-9 Manifold 209-0789 209-0789 14 C-8 Motor Gp -Axle Oil Cooler 205-5268 205-5268 15 A-9 Motor Gp -Radiator Hydr. Fan 205-3669 205-3669 16 A-8 Motor Gp -Reversing Fan 205-3778 205-3778 16 A-9 Pump Gp -Brake / Fan / Filter 262-2875 262-2875 17 A-8 Pump Gp -Spplmnt. Steering 205-5266 205-5266 18 C-9 Pump Gp -Steering / Implement 163-2428 163-2428 19 B-8 Screen As 247-8298 247-8298 21 B-9 Sensor Gp -Brake Pump Pressure 224-4536 224-4536 17 B-8 Sensor Gp -Xmssm Neutralizer 290-5825 290-5825 22 C-9 Switch As -Axle Cooler Press. 3E-7690 3E-7690 15 B-9 Switch As -Float Press. 229-1537 23 A-6 Switch As -Ride Contr Disable 126-6916 23 A-6 Switch As -Sec. Steering 230-5771 230-5771 14 C-8 Tank Gp-Hydraulic Oil 201-8108 201-8108 20 A-8 Valve As -Foot Brake 144-8521 144-8521 22 B-9 Valve Gp -Ball, Dead Eng. Lwr 112-1817 112-1817 5 C-6 Valve Gp -Check 9T-1013 9T-1013 13 D-9, D-8, D-6 Valve Gp -Check, Back Press. 212-7521 212-7521 14 C-8 Valve Gp -Combination, Rlf/ Dvtr 173-4032 14 C-6 Valve Gp -Coupler Control 233-2549 14 D-8 Valve Gp -Implement 2 Section 209-0273 23 B-4 to B-6, D-1 to D-3 Valve Gp -Implmnt 2 Sec. W/ Regen 209-0270 23 B-4 to B-6, D-1 to D-3 Valve Gp -Implement 3 Section 209-0274 23 Valve Gp -Implmnt 3 Sec. W/ Regen 209-0271 23 Valve Gp -Implmnt 4 Sec. 209-0275 23 Valve Gp -Implmnt 4 Sec. W/ Regen 209-0272 23 Valve Gp -Intgrtd 3rd Fnct. Cntrl 262-9706 23 E-2 Valve Gp -Pilot, 2 Single Func. Lvrs 212-1301 212-1301 4 A-4 to A-6, C-1 to C-3 Valve Gp -Pilot, 3 Single Func. Lvrs 212-1304 212-1304 4 A-4 to A-6, C-1 to C-3 Valve Gp -Pilot, 4 Single Func. Lvrs 212-1306 212-1306 4 Valve Gp -Pilot, Joystick 212-1302 212-1302 4 Valve Gp -Pilot, Joystick / 2 Aux. 212-1307 212-1307 4 Valve Gp -Pilot, Joystick / Aux. 212-1305 212-1305 4 Valve Gp -Pressure Reducing 185-5209 185-5209 24 B-7 Valve Gp -Relief 251-0907 251-0907 25 C-9 Valve Gp -Ride Control 141-1481 141-1481 3 D-7 Valve Gp -Shutoff, Hydr. Drain 6V-7238 6V-7238 24 B-7 Valve Gp -Pilot Shut-Off 233-7133 233-7133 26 A-7 Valve Gp -Sol, Ride Control 297-1209 297-1209 26 D-7

description

hydraulic diagram

Transcript of 924G WGX

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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

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Electrical Symbols (Electrical)

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

T

RENR6432-01May 2008

924G and 924GZ Wheel LoaderHydraulic SystemDDA1-UPRTA1-UPRBB1-UPWMB1-UPWGX1-UPDFZ1-UP

©2008 CaterpillarAll Rights Reserved

Printed in U.S.A.

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924G

COMPONENT LOCATIONS

12

SOS

OIL FILTER

IMPLEMENT PUMP

AA

STEERING PUMP LOAD SENSE

BB

IMPLEMENT PUMP PRESSURE

CC

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ABOVE IMPLEMENT VALVESFOOT BRAKE

FF

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DD

EE

GG

HH

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Tap LocationsPressure and Sampling

TapNumber Description Schematic

LocationAA Implement Pump Load Sense Pressure B-8BB Steering Pump Load Sense Pressure B-8CC Implement Pump Pressure C-6DD Steering Pump Pressure B-7EE Pilot Supply Pressure A-7FF Front Brake Pressure B-9GG Tilt Cylinder Rod End Pressure C-6HH Tilt Cylinder Rod Head Pressure C-6II Rear Axle Cooler Circuit Pressure B-9

SOS Hydraulic Oil Sampling Port (SOS) A-9

Note: Refer to Parts Manuals for your specific machine.

COMPONENT LOCATIONS

Description Part No. 924G

Part No. 924GZ

MachineLocation

SchematicLocation

Accumulator Gp -Brake 140-9251 140-9251 1 B-9,C-9Accumulator Gp -Pilot 243-4398 243-4398 2 A-7Accumulator Gp -Ride Control 223-9698 223-9698 3 D-7Connector -Orifice 8C-0564 8C-0564 4 A-4 to A-6 Connector -Orifice 3E-2335 3E-2335 5 C-6Cooler -Hydraulic Oil Cooler, Standard 239-7394 239-7394 6 A-9Cooler -Hydraulic Oil Cooler, Heavt Dut 239-7395 239-7395 6 A-9Cooler As -Dual Disc Axle Oil 205-3652 205-3652 7 B-9Cylinder Gp -Lift 141-7483 152-4187 8 C-6Cylinder Gp -Steering 142-6251 142-6251 9 E-9Cylinder Gp -Tilt 268-9437 152-5306 10 C-6Cylinder Gp -Coupler, Standard 190-3085 11 E-8Cylinder Gp -Coupler, Wide 188-0982 11 E-8Filter Gp -Element 126-1818 209-3149 209-3149 12 A-9Hand Metering Unit 214-4153 214-4153 13 D-9Manifold 209-0789 209-0789 14 C-8Motor Gp -Axle Oil Cooler 205-5268 205-5268 15 A-9Motor Gp -Radiator Hydr. Fan 205-3669 205-3669 16 A-8Motor Gp -Reversing Fan 205-3778 205-3778 16 A-9Pump Gp -Brake / Fan / Filter 262-2875 262-2875 17 A-8Pump Gp -Spplmnt. Steering 205-5266 205-5266 18 C-9Pump Gp -Steering / Implement 163-2428 163-2428 19 B-8Screen As 247-8298 247-8298 21 B-9Sensor Gp -Brake Pump Pressure 224-4536 224-4536 17 B-8Sensor Gp -Xmssm Neutralizer 290-5825 290-5825 22 C-9Switch As -Axle Cooler Press. 3E-7690 3E-7690 15 B-9Switch As -Float Press. 229-1537 23 A-6Switch As -Ride Contr Disable 126-6916 23 A-6Switch As -Sec. Steering 230-5771 230-5771 14 C-8Tank Gp-Hydraulic Oil 201-8108 201-8108 20 A-8Valve As -Foot Brake 144-8521 144-8521 22 B-9Valve Gp -Ball, Dead Eng. Lwr 112-1817 112-1817 5 C-6Valve Gp -Check 9T-1013 9T-1013 13 D-9, D-8, D-6 Valve Gp -Check, Back Press. 212-7521 212-7521 14 C-8Valve Gp -Combination, Rlf/ Dvtr 173-4032 14 C-6Valve Gp -Coupler Control 233-2549 14 D-8

Valve Gp -Implement 2 Section 209-0273 23 B-4 to B-6, D-1 to D-3

Valve Gp -Implmnt 2 Sec. W/ Regen 209-0270 23

B-4 to B-6,D-1 to D-3

Valve Gp -Implement 3 Section 209-0274 23Valve Gp -Implmnt 3 Sec. W/ Regen 209-0271 23Valve Gp -Implmnt 4 Sec. 209-0275 23Valve Gp -Implmnt 4 Sec. W/ Regen 209-0272 23Valve Gp -Intgrtd 3rd Fnct. Cntrl 262-9706 23 E-2

Valve Gp -Pilot, 2 Single Func. Lvrs 212-1301 212-1301 4 A-4 to A-6, C-1 to C-3

Valve Gp -Pilot, 3 Single Func. Lvrs 212-1304 212-1304 4

A-4 to A-6,C-1 to C-3

Valve Gp -Pilot, 4 Single Func. Lvrs 212-1306 212-1306 4Valve Gp -Pilot, Joystick 212-1302 212-1302 4Valve Gp -Pilot, Joystick / 2 Aux. 212-1307 212-1307 4Valve Gp -Pilot, Joystick / Aux. 212-1305 212-1305 4Valve Gp -Pressure Reducing 185-5209 185-5209 24 B-7Valve Gp -Relief 251-0907 251-0907 25 C-9Valve Gp -Ride Control 141-1481 141-1481 3 D-7Valve Gp -Shutoff, Hydr. Drain 6V-7238 6V-7238 24 B-7Valve Gp -Pilot Shut-Off 233-7133 233-7133 26 A-7Valve Gp -Sol, Ride Control 297-1209 297-1209 26 D-7

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LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

Taps (Pressure, Sampling,Sensor) by letter

Components by number

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THIS SCHEMATIC IS FOR THE 924G AND 924GZPART NUMBER: 203-3878, CHANGE: 04, VERSION: (-)PART NUMBER: 203-3879, CHANGE: 03, VERSION: (-)Components are shown installed on a fully operable machine.

Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.

DRAIN / RETURN LINE

LINES GROUP COLOR DESCRIPTIONSSTEERING / PILOT PUMP CIRCUIT

IMPLEMENT PUMP CIRCUIT

STEERING CIRCUIT

PILOT

AXLE OIL

SUPPLY LINE

COUPLER CYLINDER

LOAD SENSING

THIRD FUNCTION

SECONDARY STEERING PUMP

LIFT CYLINDERS

FOURTH FUNCTION

TILT CYLINDERS

AXLE COOLING / BRAKE / FAN PUMP CIRCUITAXLE COOLING / FAN CIRCUIT

A

B

C

D

E

123456789

A

B

C

D

E

123456789

S3S2

P T

N1

T LS P

S3S2

S1

DUMP LOWER /FLOAT

RACKBACK

WIRED TO CONTROLLER

RAISE

M

FROM CONTROLLER

P

LS

T

TO FOURTH FUNCTION

TO REAR BRAKES

TO FRONT BRAKES

TO THIRD FUNCTION

AXLE OIL

S4

O

P

T

A1 A2

EF

BACK FORWARD

DUMP LOWER /FLOAT

RACKBACK

WIRED TO CONTROLLER

RAISE

P

LS

T

TO FOURTH FUNCTIONTO THIRD FUNCTIONPT3

P T

C1 C2

PILOT SUPPLY(FROM SHUT-OFF VALVE)

INTEGRATED THIRD FUNCTION

TANK GPHYDRAULIC201-8108

VALVE GP2 SECTIONWITH REGENERATION 924G: 209-0270

VALVE GP3 SECTIONWITH REGENERATION 924G: 209-0271

VALVE GP4 SECTIONWITH REGENERATION 924G: 209-0272

VALVE GPCHECKBACK PRESSURE212-7521

VALVE ASFOOT BRAKE144-8521

VALVE GPPRESS. REDUCING185-5209

VALVE GPRELIEF251-0907

VALVE GPPILOT,JOYSTICK212-1302

VALVE GPPILOTJOYSTICK / AUX212-1305

VALVE GPPILOTJOYSTICK / 2 AUX924G: 212-1307

VALVE GPRIDE CONTROL141-1481

CYLINDER GPLIFT924G: 141-7483924GZ: 152-4187

MANIFOLD209-0789

ACCUMULATOR GPPILOT243-4398

MOTOR GPAXLE OIL COOLER205-5268

COOLERHYDR. OILSTANDARD : 239-7394HEAVY DUTY : 239-7395

HAND METERING UNIT214-4153

PUMP GPSUPPLEMENTALSTEERING205-5266

CYLINDER GPSTEERING142-6251

ACCLMTR.GPBRAKE140-9251

PUMP GPBRAKE AND FAN262-2875

MOTOR GPOPTIONALREVERSING FAN289-6394

FILTER GP209-3149

CONNECTORORIFICE8C-0564

CONNECTORORIFICE8C-0564

CONNECTORORIFICE8C-0564

VALVE GPBALLDEAD ENG. LOWER112-1817

COOLER ASDUAL DISC BRAKES205-3652

SWITCH ASRIDE CNTRL DSBL924G: 126-6916

SWITCH ASFLOAT PRESS.924GZ: 229-1537

SWITCH ASSEC. STEERING.230-5771SENSOR GP

TRANSMISSIONNEUTRALIZER290-5825

SENSOR GPBRAKE PUMPPRESSURE224-4536

SWITCH ASAXLE CLR PRESS.3E-7690

SCREEN AS247-8298

CONNECTORORIFICE3E-2335

VALVE GPSHUTOFFHYDR. DRAIN6V-7238

ACCUMULATOR GPRIDE CONTROL223-9698

CYLINDER GPCOUPLERSTANDARD924G: 190-3085WIDE924G: 188-0982

VALVE GPCOUPLER CONTROL233-2549

VALVE GPCOMBINATIONRELIEF / DVRTR924G: 173-4032

VALVE GPINTEGRATED 3RD FUNCTION CONTROL924G: 262-9706

VALVE GPSOLENOIDPILOT SHUTOFF233-7133

MOTOR GPRAD. HYDR. FAN289-6393

VALVE GPPILOT2 SINGLE FUNCTION LEVERS924GZ: 212-1301

VALVE GPPILOT3 SINGLE FUNCTION LEVERS924GZ: 212-1304

VALVE GP2 SECTION924GZ: 209-0273

VALVE GP3 SECTION924GZ: 209-0274

VALVE GPPILOT3 SINGLE FUNCTION LEVERS924GZ: 212-1306

VALVE GP4 SECTION924GZ: 209-0275

VALVE GPCHECK9T-1013

VALVE GPCHECK9T-1013

CYLINDER GPTILT924G: 268-9437924GZ: 152-5306

VALVE GPSOLENOIDRIDE CONTROL297-1209

PUMP GPIMPLEMENT /STEERING 163-2428

AABB

CC

DD

EE

FF

GG

HH

II

SOS

INDICATES COMPONENTSUSED ON 924G ONLY

INDICATES COMPONENTSUSED ON 924GZ ONLY

NOTE A: USED ON 924GZ

NOTE A