Factory Service And Maintenance Manual For JLG Boom Lift. Manual Contains Important Information And Instructions For Maintenance Description Of The Functions And Capabilities Of The System. Illustrations, Instructions, Diagrams For Step By Step Remove And Install, Assembly And Disassembly, Service, Inspection, Repair, Troubleshooting, Tune-Ups.

Format: PDF
Language: English
Quantity of Manuals: 2
Pages: 114; 116
Issue: may 2002; august 2009
Bookmarks: Yes
Searchable: Yes
Wiring Diagrams: Yes
Hydraulic Diagrams: Yes

Model

JLG Boom Lift
120HX

Contents

-INTRODUCTION – MAINTENANCE SAFETY PRECAUTIONS
General
Hydraulic System Safety
Maintenance
-SPECIFICATIONS
Capacities
Component Data
Performance Data
Function Speeds (Machines Built Prior to S/N 38697)
Function Speeds (Machines Built After S/N 38697)
Torque Requirements
Lubrication
Pressure Settings – PSI (Bar)
Serial Number Locations
Major Component Weights
Boom Tape
Cylinder Specifications
Critical Stability Weights
-PROCEDURES
General
Servicing and Maintenance Guidelines
Lubrication Information
Cylinders – Theory of Operation
Valves – Theory of Operation
Boom Chains
Wear Pads
Drift Test
Cylinder Checking Procedures
Cylinder Removal and Installation
Cylinder Repair
Boom Maintenance
Tilt Alarm Switch
Limit Switch Adjustments
Throttle Checks and Adjustments – Deutz Engine
Pressure Setting Procedures
Swing Bearing
Drive Torque Hub
Swing Torque Hub
swing brake
Drive Brake
Free Wheeling Option
PQ Controllers
Boom Marking Tape Installation
Boom Length/Angle Sensor Adjusting Procedure
Load Management System
Load Management System Adjustment
Turntable Springs
Drive Motor Adjustment Procedure
Preventive Maintenance and Inspection Schedule
-TROUBLESHOOTING
General
Troubleshooting
Hydraulic Circuit Checks