[Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

33
Torque Converter Inlet Relief Valve Filter Transmission Pump Tank Main Relief Valve Torque Converter Power Train ECM 4 5 6 2 1 Torque Converter Outlet Relief Valve To Transmission Bearing Lubrication 3 2 3 Modulating Valve Modulating Valve Modulating Valve Modulating Valve Screen Group Magnet TRANSMISSION HYDRAULIC SYSTEM NEUTRAL FORWARD FOURTH SPEED SECOND SPEED 4 Modulating Valve THIRD SPEED 5 6 FIRST SPEED Modulating Valve 1 REVERSE Cooler

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Wheel Loader HYDRAULIC SYSTEM

Transcript of [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

Page 1: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

TorqueConverter

Inlet ReliefValve

Filter

TransmissionPump

Tank

Main Relief ValveTorque

Converter

Power TrainECM

4

5

6

2

1

Torque Converter Outlet Relief Valve

ToTransmission

Bearing Lubrication

3

2

3

ModulatingValve

ModulatingValve

ModulatingValve

ModulatingValve

Screen GroupMagnet

TRANSMISSION HYDRAULIC SYSTEMNEUTRAL

FORWARD

FOURTHSPEED

SECOND SPEED

4

ModulatingValve

THIRDSPEED

5

6

FIRSTSPEED

ModulatingValve

1REVERSE

Cooler

Page 2: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

6

TorqueConverter

Inlet ReliefValve

Filter

TransmissionPump

Tank

Main Relief ValveTorque

Converter

Power TrainECM

4

5

3

3

ModulatingValve

1

Torque Converter Outlet Relief Valve

ToTransmission

Bearing Lubrication

ModulatingValve

1 4

ModulatingValve

Screen GroupMagnet

Cooler

TRANSMISSION HYDRAULIC SYSTEMFIRST SPEED FORWARD

2

2

ModulatingValve

FORWARD

REVERSE THIRDSPEED

FOURTHSPEED

ModulatingValve

FIRSTSPEED

5

ModulatingValve

SECONDSPEED

6

Page 3: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

6

ModulatingValve

FIRSTSPEED

TorqueConverter

Inlet ReliefValve

Filter

TransmissionPump

Tank

Main Relief ValveTorque

Converter

Power TrainECM

4

5

5

ModulatingValve

SECONDSPEED

3

3

ModulatingValve

1

Torque Converter Outlet Relief Valve

ToTransmission

Bearing Lubrication

ModulatingValve

1

Screen GroupMagnet

TRANSMISSION HYDRAULIC SYSTEMSECOND SPEED FORWARD

2

2

ModulatingValve

FORWARD

REVERSE

FOURTHSPEED

6

6

4

ModulatingValve

THIRDSPEED

Cooler

Page 4: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

6

ModulatingValve

FIRSTSPEED

TorqueConverter

Inlet ReliefValve

Filter

TransmissionPump

Tank

Main Relief ValveTorque

Converter

PowerTrainECM

4

5

5

ModulatingValve

SECONDSPEED

3

3

ModulatingValve

1

Torque Converter Outlet Relief Valve

ToTransmission

Bearing Lubrication

ModulatingValve

2

REVERSE

Screen GroupMagnet

TRANSMISSION HYDRAULIC SYSTEMSECOND SPEED REVERSE

1

ModulatingValve

FORWARD

2

FOURTHSPEED

6

6

4

ModulatingValve

THIRDSPEED

Cooler

Page 5: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

"H" SERIES MEDIUM WHEEL LOADER IMPLEMENT HYDRAULIC SYSTEMHOLD

LiftCylinders

TiltCylinder

RideControl

Accumulator

AuxiliaryFunction

Tank

Hydraulic LockoutValve

SteeringPilot

Supply(CCS Only)

Margin (Pressuredifferential)Relief Valve

PilotAccumulator

PilotPressureReducing

Valve

SignalDuplication

Valve

SignalReliefValve

ManualLowerValve

Tilt AntidriftValve

CaseDrainFilter

BalanceValve

Ride ControlRelief Valve

Lift Ant idriftValve

Choke CheckValve

Dump PilotSolenoid Valve

Lower / FloatPilot

Solenoid Valve

Raise PilotSolenoid Valve

Tilt Back PilotSolenoid Valve

LineReliefValves

Screen

Tilt Spool

Lift Spool

PressureCompensator

Valve

ResolverValve

ResolverValve

Resolver Valve

PressureCompensator

Valve

Auxiliary Rod EndSolenoid Valve

Auxiliary Head End

Solenoid Valve

CoverManifold

InletManifold

PressureCompensator

Valve

Auxiliary Spool

RideControl

Head EndSolenoid valve

RodEnd

SolenoidValve

Pumpand

PumpControlValve

Min Angle

CheckValve

ResolverValve

Page 6: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

From Signal Duplication Valve

To / From Rod Endof Cylinder

PressureCompensator

Valve

Line Reliefand

Makeup Valve

Bridge Passage

Tilt AntidriftValve

FeederPassage

Internal Passage

Control Spool

Line Reliefand

Makeup Valve

SupplyPassage

To Signal Duplication Valve

From Resolver Valves

Rackback PilotSolenoid Valve

Dump PilotSolenoid Valve

To / From Head Endof Cylinder

"H" SERIES MEDIUM WHEEL LOADER TILT CONTROL VALVEHOLD

Page 7: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

From Signal Duplication Valve

To Rod Endof Cylinder

PressureCompensator

Valve

Line Reliefand

Makeup Valve

Bridge Passage

Tilt AntidriftValve

FeederPassage

Internal Passage

Control Spool

Line Reliefand

Makeup Valve

SupplyPassage

To Signal Duplication Valve

From Resolver Network

Tilt Back PilotSolenoid Valve

Dump PilotSolenoid Valve

From Head Endof Cylinder

"H" SERIES MEDIUM WHEEL LOADER TILT CONTROL VALVEDUMP

Page 8: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

From Signal Duplication Valve

To Rod Endof Cylinder

Load Check Spool

Line Reliefand

Makeup Valve

Bridge Passage

Tilt AntidriftValve

FeederPassage

Internal Passage

Control Spool

Line Reliefand

Makeup Valve

SupplyPassage

To Signal Duplication Valve

From Resolver Network

Tilt Back PilotSolenoid Valve

Dump PilotSolenoid Valve

From Head Endof Cylinder

PRESSURE COMPENSATOR AND LOAD CHECK VALVEHOLD

PressureCompensator

Valve

Page 9: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

From Signal Duplication Valve

To Rod Endof Cylinder

Load Check Spool

Line Reliefand

Makeup Valve

Bridge Passage

Tilt AntidriftValve

FeederPassage

Internal Passage

Control Spool

Line Reliefand

Makeup Valve

SupplyPassage

To Signal Duplication Valve

From Resolver Network

Tilt Back PilotSolenoid Valve

Dump PilotSolenoid Valve

From Head Endof Cylinder

PRESSURE COMPENSATOR AND LOAD CHECK VALVELOAD CHECK OPERATION

PressureCompensator

Valve

Page 10: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

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Page 11: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

PumpSupply

Spool

Signal

Valve A Valve B Valve C

HOLD LOW PRESSURE HIGH PRESSURE

To Pump and Signal Limiter

FeederPassage

PROPORTIONAL PRIORITY, PRESSURE COMPENSATOROPERATION

BridgedPassagePump

SupplyPumpSupply

ToSignal

Duplication ValveResolver

Valve

From SignalDuplication Valve

Pressure DifferentialRelief Valve

FeederPassage

FeederPassage

ResolverValve

BridgedPassage

BridgedPassage

SpoolSpool

Page 12: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

"H" SERIES MEDIUM WHEEL LOADER IMPLEMENT HYDRAULIC SYSTEMDUMP

LiftCylinders

TiltCylinder

RideControl

AuxiliaryFunction

Tank

Hydraulic Lockoutsolenoid Valve

MarginRelief Valve

PilotAccumulator

PilotPressureReducing

Valve

SignalDuplication

Valve

SignalReliefValve

ManualLowerValve

Tilt AntidriftValve

CaseDrainFilter

BalanceValve

Ride ControlRelief Valve

Lift Ant idriftValve

Choke CheckValve Pump

andPump

ControlValve

Dump PilotSolenoid Valve

Lower / FloatPilot

Solenoid Valve

Raise PilotSolenoid Valve

Tilt Back PilotSolenoid Valve

LineReliefValves

Screen

Tilt Spool

Lift Spool

PressureCompensator

Valve

ResolverValve

ResolverValve

Resolver Valve

PressureCompensator

Valve

Auxiliary Rod EndSolenoid Valve

Auxiliary Head End

Solenoid Valve

AuxiliarySpool

InletManifold Cover

Manifold

Min Angle

RideControl

Accumulator

Head EndSolenoid Valve

RodEnd

SolenoidValve

CheckValve

Page 13: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

"H" SERIES MEDIUM WHEEL LOADER IMPLEMENT HYDRAULIC SYSTEMRAISE

LiftCylinders

TiltCylinder

RideControl

AuxiliaryFunction

Tank

Hydraulic LockoutValve

MarginRelief Valve

PilotAccumulator

PilotPressureReducing

Valve

SignalDuplication

Valve

SignalReliefValve

ManualLowerValve

Tilt AntidriftValve

CaseDrainFilter

BalanceValve

Ride ControlRelief Valve

Choke CheckValve Pump

andPump

ControlValve

Dump PilotSolenoid Valve

Lower / FloatPilot

Solenoid Valve

Raise PilotSolenoid Valve

Tilt Back PilotSolenoid Valve

LineReliefValves

Screen

Tilt Spool

Lift Spool

PressureCompensator

Valve

ResolverValve

ResolverValve

Resolver Valve

PressureCompensator

Valve

Auxiliary Rod EndSolenoid Valve

Auxiliary Head End

Solenoid Valve

AuxiliarySpool

Lift AntidriftValve

InletManifold Cover

Manifold

Min Angle

BalanceSolenoid

Valve

Head EndSolenoid Valve

Rod End

Solenoid Valve

Check Valve

Ride ControlAccumulator

Page 14: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

"H" SERIES MEDIUM WHEEL LOADER IMPLEMENT HYDRAULIC SYSTEMFLOAT

LiftCylinders

TiltCylinder

RideControl

AccumulatorAuxiliaryFunction

Tank

Hydraulic LockoutValve

MarginRelief Valve

PilotAccumulator

PilotPressureReducing

Valve

SignalDuplication

Valve

SignalReliefValve

ManualLowerValve

Tilt AntidriftValve

CaseDrainFilter

BalanceValve

Ride ControlRelief Valve

Choke CheckValve

Dump PilotSolenoid Valve

Lower / FloatPilot

Solenoid Valve

Raise PilotSolenoid Valve

Tilt Back PilotSolenoid Valve

LineReliefValves

Screen

Tilt Spool

Lift Spool

PressureCompensator

Valve

ResolverValve

ResolverValve

Resolver Valve

PressureCompensator

Valve

Auxiliary Rod EndSolenoid Valve

Auxiliary Head End

Solenoid Valve

Auxiliary Spool

Lift AntidriftValve

InletManifold Cover

ManifoldHead End

Solenoid valve

RodEnd

SolenoidValve

RideControl

Min Angle

Pumpand

PumpControlValve

CheckValve

Page 15: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

"H" SERIES MEDIUM WHEEL LOADER IMPLEMENT HYDRAULIC SYSTEMTILT BACK AND RAISE

LiftCylinders

TiltCylinder

RideControl

AccumulatorAuxiliaryFunction

Tank

Hydraulic LockoutValve

MarginRelief Valve

PilotAccumulator

PilotPressureReducing

Valve

SignalDuplication

Valve

SignalReliefValve

ManualLowerValve

Tilt AntidriftValve

CaseDrainFilter

BalanceValve

Ride ControlRelief Valve

Lift Ant idriftValve

Choke CheckValve

Pump

Dump PilotSolenoid Valve

Lower / FloatPilot

Solenoid Valve

Raise PilotSolenoid Valve

Tilt Back PilotSolenoid Valve

LineReliefValves

Screen

Tilt Spool

Lift Spool

PressureCompensator

Valve

ResolverValve

ResolverValve

Resolver Valve

PressureCompensator

Valve

Auxiliary Rod EndSolenoid Valve

Auxiliary Head End

Solenoid Valve

Auxiliary Spool

CoverManifold

Inlet Manifold

RideControl

CheckValve

Page 16: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

"H" SERIES MEDIUM WHEEL LOADER IMPLEMENT HYDRAULIC SYSTEMHOLD / AUTO TRAVEL MORE THAN 9.7 KM/H (6 MPH)

LiftCylinders

TiltCylinder

RideControl

AuxiliaryFunction

Tank

Pilot ShutoffValve

Margin Relief Valve

PilotAccumulator

PilotPressureReducing

Valve

SignalDuplication

Valve

SignalReliefValve

ManualLowerValve

Tilt AntidriftValve

CaseDrainFilter

BalanceValve

Ride ControlRelief Valve

Lift AntidriftValve

Choke CheckValve

Pump

Dump PilotSolenoid Valve

Lower / FloatPilot

Solenoid Valve

Raise PilotSolenoid Valve

Tilt Back PilotSolenoid Valve

LineReliefValves

Screen

Tilt Spool

Lift Spool

PressureCompensator

Valve

ResolverValve

ResolverValve

Resolver Valve

Auxiliary Rod EndSolenoid Valve

Auxiliary Head End

Solenoid Valve

RideControl

Accumulator

Head EndSolenoid Valve

RodEnd

SolenoidValve

Auxiliary Spool

CheckValve

InletManifold

PressureCompensator

valve

Page 17: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

SteeringCylinders

SteeringControlValve

Secondary SteeringPump and Motor

(Optional)

Secondary SteeringDiverter Valve

NeutralizerValve

NeutralizerValve

HandMetering

Unit

Check Valve

SteeringPump

Tank

HOLDSTEERING SYSTEM BLOCK DIAGRAM

Page 18: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

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Page 24: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

FromImplement

Control Valve

To SteeringControl Valve

To SteeringControl Valve

ToHydraulic Tank

A

A

Section A-A

CamPlunger

RegulatingSpring

PressureRegulating Valve

Adjustment Screw

FromImplement

Control Valve

To SteeringControl Valve

To SteeringControl Valve

Pilot Oil Ports

DirectionalControl Valve

STEERING PILOT VALVERIGHT TURN

DirectionalControl Valve

Body

Piston

Orifice

Input ShaftConnected to

Steering Wheel

Page 25: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

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HydraulicFan

Motor

Filter

OilCooler

Fan SolenoidValve

Brake andHydraulicFan Pump

Flow ControlSpool

PressureCutoffSpool

PumpControl Valve

Min Angle

Actuator

Hydraulic Tank

Case DrainFilter

PriorityValve

Screen

AccumulatorCharging Valve

and Fan Solenoid Valve

Front BrakeAccumulator

Cut In Valve

ResolverValve

ReliefValve

Cut OutValve

BrakePressureSwitch

Inverse Shuttle Valve

ParkingBrake

ParkingBrake

Actuator

ParkingBrakeValve

ParkingBrake

PressureSwitch

Right BrakePedal

Left BrakePedal

ServiceBrakeValveFront Service

Brakes

Rear ServiceBrakes

Check Valve

BRAKE AND HYDRAULIC FAN HYDRAULIC SYSTEMACCUMULATORS CUT IN REDUCED FAN SPEED

Rear BrakeAccumulator

Page 28: [Oto-Hui.com]Caterpillar 966H Wheel Loader HYDRAULIC SYSTEM

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