Lull 944E-42 Service Manual User Manual
Service manual
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Table of contents
Document Outline
- 31200355_A_944E-42_Lull_Service
- Effectivity Page
- Table of Contents
- Section 1 Safety Practices
- Section 2 General Information and Specifications
- Section 3 Boom
- Section 4 Cab and Covers
- 4.1 Operator’s Cab and Covers Component Terminology
- 4.2 Operator’s Cab
- 4.3 Cab Components
- 4.4 Enclosed Cab (Optional) Components
- 4.4.1 Front Windshield Wiper Switch
- 4.4.2 Front Windshield Wiper Motor
- 4.4.3 Windshield Washer Control
- 4.4.4 Skylight Wiper Washer & Rear Window Washer Switch
- 4.4.5 Skylight Wiper Motor
- 4.4.6 Windshield/Skylight/Rear Wiper Washer Reservoir w/Pump
- 4.4.7 Rear Wiper Switch/Motor
- 4.4.8 Heater/Defroster System
- 4.5 Cab Removal
- 4.6 Cab Installation
- 4.7 Valve Plate
- Section 5 Axles, Drive Shafts, Wheels and Tires
- Section 6 Transmission
- 6.1 Transmission Assembly Component Terminology
- 6.2 Transmission Serial Number
- 6.3 Transmission Specifications And Maintenance Information
- 6.4 Transmission Replacement
- 6.5 Troubleshooting
- 6.6 Transfer Case Component Terminology
- 6.7 Transfer Case
- 6.8 Transfer Case Serial Number
- 6.9 Transfer Case Maintenance
- 6.10 Transfer Case Replacement
- 6.11 Troubleshooting
- Section 7 Engine
- Section 8 Hydraulic System
- 8.1 Hydraulic Component Terminology
- 8.2 Safety Information
- 8.3 Hydraulic Pressure Diagnosis
- 8.4 Hydraulic Circuits
- 8.5 Hydraulic Reservoir
- 8.6 Hydraulic System Pump
- 8.7 Valves and Manifolds
- 8.7.1 Valve Plate Assembly
- 8.7.2 Main Control Valve
- 8.7.3 Joystick Valve (Dual Joystick)
- 8.7.4 Pilot Select Valve (Dual Joystick)
- 8.7.5 Joystick Valve (Single Joystick)
- 8.7.6 Single Joystick Pilot Select Valve
- 8.7.7 Frame Sway Joystick Valve
- 8.7.8 Auxiliary Hydraulic Pressure Release Valve
- 8.7.9 Service Brake Valve
- 8.7.10 Brake Test
- 8.7.11 Power Steering Valve
- 8.7.12 Steer Select Valve
- 8.7.13 Accumulator Charge/Secondary Function Valve
- 8.7.14 Accumulators
- 8.7.15 General Information
- 8.7.16 Checking Pre-Charge
- 8.7.17 Accumulator Charge Troubleshooting
- 8.8 Hydraulic Cylinders
- Section 9 Electrical System
- 9.1 Electrical Component Terminology
- 9.2 Specifications
- 9.3 Safety Information
- 9.4 Fuses and Relays
- 9.5 Electrical Schematics
- 9.6 Circuit Breakdowns
- 9.7 Engine Start Circuit
- 9.8 Charging Circuit
- 9.9 Window Wiper/Washer Windshield Wiper Motor
- 9.10 Cab Heater and Fan
- 9.11 Switches and Solenoids
- 9.11.1 Ignition Key Switch
- 9.11.2 Hydraulic Oil Filter Pressure Switch
- 9.11.3 Dual Hydraulic Oil Temperature Switch
- 9.11.4 Auxiliary Hydraulic Pressure Release Switch
- 9.11.5 Parking Brake Switch
- 9.11.6 Transmission Disconnect Switch
- 9.11.7 Transmission Shift Control Switch
- 9.11.8 Transmission Solenoid Valves
- 9.11.9 Dual Joystick
- 9.11.10 Optional Single Joystick
- 9.11.11 Boom Angle Sensor
- 9.11.12 Coolant Temperature Switch
- 9.11.13 Transmission Temperature Switch
- 9.11.14 Fuel Level Gauge and Fuel Level Sender
- 9.11.15 Hourmeter
- 9.11.16 Stabilizer Brake Switch
- 9.12 Dash Switches
- 9.13 Troubleshooting
- Section 10 Stabil-TRAK™ System
- 10.1 Stabil-TRAK™ System Component Terminology
- 10.2 Stabil-TRAK™ Description
- 10.3 Stabil-TRAK™ Electrical Circuit Operation and Troubleshooting
- 10.4 Stabil-TRAK™ System Test
- 10.5 Stabil-TRAK™ Hydraulic Circuit Operation and Troubleshooting
- 10.5.1 Troubleshooting Symptom Chart
- 10.5.2 Stabil-TRAK™ Hydraulic Circuit
- 10.5.3 Stabilizer Cylinder Oil Flow
- 10.5.4 Hydraulic Circuit Operation - Free Pivot Mode, Rod Oil Out
- 10.5.5 Hydraulic Troubleshooting - Free Pivot Mode, Rod Oil Out
- 10.5.6 Hydraulic Circuit Operation - Free Pivot Mode, Base Oil Out
- 10.5.7 Hydraulic Troubleshooting - Free Pivot Mode, Base Oil Out
- 10.5.8 Hydraulic Circuit Operation - Slow Pivot Mode, Rod Oil Out
- 10.5.9 Hydraulic Troubleshooting - Slow Pivot Mode, Rod Oil Out
- 10.5.10 Hydraulic Circuit Operation - Slow Pivot Mode, Base Oil Out
- 10.5.11 Hydraulic Troubleshooting - Slow Pivot Mode, Base Oil Out
- 10.5.12 Hydraulic Circuit Operation - Locked Mode
- 10.5.13 Hydraulic Circuit Operation - Locked Mode, Frame Sway Right
- 10.5.14 Hydraulic Troubleshooting - Locked Mode, Will Not Frame Sway Right
- 10.5.15 Hydraulic Circuit Operation - Locked Mode, Frame Sway Left
- 10.5.16 Hydraulic Troubleshooting - Locked Mode, Will Not Frame Sway Left
- Section 11 Transfer Carriage
- 11.1 Transfer Carriage Component Terminology
- 11.2 Transfer Carriage
- 11.3 Transfer Carriage Maintenance
- 11.3.1 Transfer Carriage Removal
- 11.3.2 Transfer Carriage Installation
- 11.3.3 Rear Wear Pad Check
- 11.3.4 Rear Wear Pad Shimming
- 11.3.5 Rear Wear Pad Replacement
- 11.3.6 Front Upstop Wear Pad Check
- 11.3.7 Front Upstop Wear Pad Gap Check
- 11.3.8 Front Upstop Wear Pad Shimming
- 11.3.9 Front Upstop Wear Pad Replacement
- 11.3.10 Rear Roller Gap Check
- 11.3.11 Rear Roller Shimming
- 11.3.12 Front Roller Gap Check
- 11.3.13 Front Roller Shimming
- 11.3.14 Front Scraper Plate Replacement
- 11.3.15 Front Roller and Bushing Replacement
- 11.3.16 Rear Roller and Bushing Replacement
- 11.3.17 Boom Pivot Bushing Replacement
- 11.3.18 Slave Cylinder Pivot Bushing Replacement
- 11.3.19 Transfer Cylinder Replacement
- 11.4 Troubleshooting