JLG 120HX ANSI Service Manual User Manual
Service and maintenance manual, Model 120hx
Table of contents
Document Outline
- Section A. INTRODUCTION - MAINTENANCE SAFETY PRECAUTIONS
- Section 1. SPECIFICATIONS
- 1.1 Capacities
- 1.2 Component Data
- 1.3 Performance Data
- 1.4 Function Speeds (Machines Built Prior to S/N 38697)
- 1.5 Function Speeds (Machines Built After S/N 38697)
- 1.6 Torque Requirements
- 1.7 Lubrication
- 1.8 Pressure Settings - PSI (Bar)
- 1.9 Serial Number Locations
- 1.10 Major Component Weights
- 1.11 Boom Tape
- 1.12 Cylinder Specifications
- 1.13 Critical Stability Weights
- Section 2. PROCEDURES
- 2.1 General
- 2.2 Servicing and Maintenance Guidelines
- 2.3 Lubrication Information
- 2.4 Cylinders - Theory of Operation
- 2.5 Valves - Theory of Operation
- 2.6 Boom Chains
- 2.7 Wear Pads
- 2.8 Drift Test
- 2.9 Cylinder Checking Procedures
- 2.10 Cylinder Removal and Installation
- 2.11 Cylinder Repair
- 2.12 Boom Maintenance
- 2.13 Tilt Alarm Switch
- 2.14 Limit Switch Adjustments
- 2.15 Throttle Checks and Adjustments - Deutz Engine
- 2.16 Pressure Setting Procedures
- 2.17 Swing Bearing
- 2.18 Drive Torque Hub
- 2.19 Swing Torque Hub
- 2.20 swing brake
- 2.21 Drive Brake
- 2.22 Free Wheeling Option
- 2.23 PQ Controllers
- 2.24 Boom Marking Tape Installation
- 2.25 Boom Length/Angle Sensor Adjusting Procedure
- 2.26 Load Management System
- 2.27 Load Management System Adjustment
- 2.28 Turntable Springs
- 2.29 Drive Motor Adjustment Procedure
- 2.30 Preventive Maintenance and Inspection Schedule
- Section 3. TROUBLESHOOTING