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JLG 120HX Service Manual

JLG 120HX
112 pages
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Service and Maintenance Manual
Model
120HX
3120686
May 15, 2002
ANSI
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Table of Contents

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JLG 120HX Specifications

General IconGeneral
BrandJLG
Model120HX
CategoryLifting Systems
LanguageEnglish

Summary

Introduction and Maintenance Safety Precautions

General Safety Precautions

General safety precautions for aerial platform maintenance.

Hydraulic System Safety

Safety precautions related to high-pressure hydraulic systems.

Maintenance Safety Precautions

General safety precautions to be observed during maintenance.

Procedures

Cylinder Removal and Installation

Steps for removing and installing cylinder assemblies.

Cylinder Repair Procedures

General procedures for cylinder disassembly and assembly.

Boom Maintenance Procedures

Procedures for boom removal and disassembly.

Pressure Setting Procedures

Procedures for setting hydraulic pressure relief valves.

Drive Torque Hub Procedures

Procedures for drive torque hub disassembly.

Swing Torque Hub Procedures

Procedures for swing torque hub disassembly.

Swing Brake Procedures

Procedures for swing brake disassembly and assembly.

Drive Brake Procedures

Procedures for drive brake disassembly and assembly.

PQ Controllers Adjustment

Procedures for adjusting PQ controllers.

Boom Length/Angle Sensor Adjustment

Procedures for adjusting boom sensors.

Load Management System Overview

Information on the Load Management System.

Load Management System Adjustment

Procedures for adjusting the load management system.

Preventive Maintenance and Inspection Schedule

Schedule for preventive maintenance and inspections.

Troubleshooting

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