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Lull 944E-42 Service Manual User Manual

Page 838

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12.4

Model 644E-42/944E-42

Rev. 6/04

Index

Auxiliary Hydraulic

Pressure Release Circuit
(Dual Joystick) ....................... 8.142

Auxiliary Hydraulic

Pressure Release Circuit
(Single Joystick)..................... 8.144

Auxiliary Hydraulics Circuit

Description (Dual Joystick) .... 8.161

Auxiliary Hydraulics Circuit

Description (Single Joystick).. 8.161

Boom Extend Circuit

(Dual Joystick) ......................... 8.74

Boom Extend Circuit

(Single Joystick)....................... 8.76

Boom Extend/Retract Circuit

Description
(Dual Joystick) ....................... 8.148

Boom Extend/Retract Circuit

Description
(Single Joystick)..................... 8.149

Boom Lift Circuit

(Dual Joystick) ......................... 8.82

Boom Lift Circuit

(Single Joystick)....................... 8.84

Boom Lift/Lower Circuit Description

(Dual Joystick) ....................... 8.150

Boom Lift/Lower Circuit Description

(Single Joystick)..................... 8.151

Boom Lower Circuit

(Dual Joystick) ......................... 8.86

Boom Lower Circuit

(Single Joystick)....................... 8.88

Boom Retract Circuit

(Dual Joystick) ......................... 8.78

Boom Retract Circuit

(Single Joystick)....................... 8.80

Brake Circuit Description .......... 8.147
Crab Steering Circuit

(Left Turn) .............................. 8.122

Crab Steering Circuit

(Right Turn)............................ 8.124

Emergency Towing Park Brake

Release Circuit......................... 8.72

Four-Wheel Steering

Circuit (Left Turn) ................... 8.118

Four-Wheel Steering

Circuit (Right Turn)................. 8.120

Frame Sway (Left) and

Stabilizer Circuit
(SN 18460 and Before) ............ 8.90

Frame Sway (Left) and

Stabilizer Circuit
(SN 18461 and After) ............... 8.92

Frame Sway (Right) and

Stabilizer Circuit
(SN 18460 and Before) ............ 8.94

Frame Sway (Right) and

Stabilizer Circuit
(SN 18461 and After) ...............8.96

Frame Sway Circuit

Description .............................8.152

Front-Wheel Steering Circuit

(Left Turn)...............................8.114

Front-Wheel Steering Circuit

(Right Turn) ............................8.116

Joystick Circuit

(Front - Dual Joystick) ..............8.62

Joystick Circuit

(Rear - Dual Joystick) ...............8.64

Joystick Circuit

(Single Joystick) .......................8.66

Joystick Circuit Description .......8.146
Park Brake Circuit .......................8.68
Pump & Cooling Circuit

(Dual Joystick,
SN 18460 & Before) .................8.56

Pump & Cooling Circuit

(Dual Joystick,
SN 18461 & After) ....................8.58

Pump & Cooling Circuit

(Single Joystick) .......................8.60

Pump and Cooling Circuit Description

(Dual Joystick Only) ...............8.146

Pump and Cooling Circuit Description

(Single Joystick Only) .............8.146

Service Brake Circuit...................8.70
Three-Mode Steering Circuit

Descriptions............................8.158

Transfer Carriage Circuit

Description (Dual Joystick) .....8.155

Transfer Carriage Circuit Description

(Single Joystick) .....................8.156

Transfer Carriage Cylinder Extend

(Carriage Back)
(Dual Joystick) ........................8.106

Transfer Carriage Cylinder Extend

(Carriage Back)
(Single Joystick) .....................8.108

Transfer Carriage Cylinder Retract

(Carriage Forward)
(Single Joystick) .....................8.112

Transfer Carriage Cylinder Retract

(Carriage Forward)
(Dual Joystick) ........................8.110

Hydraulic Cylinders

Attachment Tilt Cylinder ............8.213
Extend/Retract Cylinder ............8.221
Frame Sway Cylinder ................8.230
General Cylinder Assembly

Instructions .............................8.212

General Cylinder Cleaning

Instructions .............................8.212

General Cylinder

Disassembly Instructions........8.212

Lift/Lower .................................. 8.225
Side Tilt Carriage Cylinder

(Optional) ............................... 8.250

Slave Cylinders ......................... 8.217
Stabilizer Cylinder ..................... 8.235
Steering Cylinders..................... 8.239
Swing Carriage Cylinder

(Optional) ............................... 8.244

Transfer Carriage Cylinder........ 8.240

Hydraulic Oil Filter Pressure

Switch ......................................... 9.214

Hydraulic Oil Temperature

Switch ......................................... 9.216

Hydraulic Pressure Diagnosis

Pressure Checks and

Adjustments ............................. 8.11

Hydraulic System

Cylinders ................................... 8.212
Fluid .............................................. 8.7
Hoses, Tube Lines,

Fittings, Etc. ............................... 8.8

Hydraulic Circuits and

Troubleshooting ....................... 8.55

Hydraulic Component

Terminology ............................... 8.5

Pressure Diagnosis..................... 8.10
Pump Failure Analysis .............. 8.166
Pump Replacement .................. 8.166
Reservoir................................... 8.164
Reservoir Replacement ............ 8.165
Safety Information......................... 8.6
Specifications................................ 8.7
System Pump............................ 8.165
System Testing ........................... 8.12
Valves and Manifolds................ 8.176

Hydraulic System Testing (Dual Joystick,

644E Only) ......... 8.12, 8.16, 8.20, 8.24

Hydraulic System Testing (Dual Joystick,

944E Only) .................. 8.36, 8.40, 8.44

Hydraulic System Testing

(Single Joystick, 644E Only) 8.28, 8.32

Hydraulic System Testing

(Single Joystick, 944E Only) 8.48, 8.52

I

Ignition Key Switch........................ 9.209

Introduction ....................................... 1.2

Component Terminology............... 7.4
Disclaimer ..................................... 2.4
Disclaimer and Scope ................... 7.3
Replacement Parts and

Warranty Information ................. 2.4

Service Methods ........................... 2.4
The Owners/Operators

Manual ....................................... 2.4

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