JLG G12-55A Service Manual User Manual
Service manual
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Table of contents
Document Outline
- 3126019_H_JLG_G10-55A G12-55A_Service
- Effectivity
- Table of Contents
- Section 1 Safety Practices
- Section 2 General Information and Specifications
- Section 3 Boom
- 3.1 Boom System Component Terminology
- 3.2 Boom System - Four Section
- 3.3 Boom Assembly Maintenance
- 3.4 Complete Boom Removal/ Installation
- 3.5 Boom Section Removal/ Installation
- 3.5.1 Second, Third & Fourth Boom Section Removal
- 3.5.2 Third & Fourth Boom Section Removal
- 3.5.3 Fourth Boom Section Removal
- 3.5.4 Hose Carrier Removal
- 3.5.5 Fourth Boom Section Assembly
- 3.5.6 Hose Carrier Installation
- 3.5.7 Third Boom Section Assembly
- 3.5.8 Fourth Boom Section Installation
- 3.5.9 Second Boom Section Assembly
- 3.5.10 Third & Fourth Boom Section Installation
- 3.5.11 Second, Third and Fourth Boom Section Installation
- 3.6 Extend/Retract Chain Removal/Installation
- 3.7 Boom Section Separation Adjustment
- 3.8 Hose Carrier Assembly Removal/Installation
- 3.9 Quick Switch Assembly
- 3.10 Boom Head - Mounted Winch
- 3.11 Boom Wear Pads
- 3.12 Boom Extend and Retract Chains
- 3.13 Forks
- 3.14 Troubleshooting
- Section 4 Cab and Covers
- Section 5 Axles, Drive Shafts, Wheels and Tires
- Section 6 Transmission
- Section 7 Engine
- Section 8 Hydraulic System
- Section 9 Electrical System
- 9.1 Electrical Component Terminology
- 9.2 Specifications
- 9.3 Safety Information
- 9.4 Fuses and Relays
- 9.5 Electrical System Schematics
- 9.5.1 Cab Schematic - John Deere
- 9.5.2 Cab Schematic - Perkins
- 9.5.3 Cab Schematic - Cummins
- 9.5.4 Options Schematic - John Deere/Perkins
- 9.5.5 Options - Cummins
- 9.5.6 Chassis Schematic - John Deere
- 9.5.7 Chassis Schematic - Perkins Before S/N 0160037186
- 9.5.8 Chassis Schematic - Perkins S/N 0160037186 Thru 0160039397 Excluding 0160039394 & 0160039397
- 9.5.9 Chassis Schematic - Cummins S/N 0160039451 and After Including 0160039394 & 0160039397
- 9.5.10 Power Unit Schematic - John Deere
- 9.5.11 Power Unit Schematic - Perkins
- 9.5.12 Power Unit Schematic - Cummins
- 9.6 Circuit Breakdowns
- 9.7 Engine Start Circuit
- 9.8 Window Wiper/Washer Windshield Wiper Motor
- 9.9 Cab Heater and Fan
- 9.10 Solenoids, Sensors and Senders
- 9.10.1 Fuel Shut-off Solenoid - John Deere
- 9.10.2 Park Brake Solenoid Valve
- 9.10.3 Transmission Solenoid Valves
- 9.10.4 Transmission Temperature Sender
- 9.10.5 Engine Coolant Temperature Sender
- 9.10.6 Air Manifold Temperature Sensor - John Deere
- 9.10.7 Engine Oil Pressure Sender/Switch
- 9.10.8 Fuel Level Sender
- 9.10.9 Inclinometer Switch
- 9.10.10 Front and Rear Axle Proximity Sensors
- 9.11 Display Monitor and Gauges
- 9.12 Dash Switches
- 9.13 Troubleshooting - John Deere
- 9.14 Engine Indicator Lamps - Perkins
- 9.15 SAE Diagnostic Trouble Codes and Fault Codes - Cummins