Service Manual Instruction Manual
Table Of Contents
- Section A. Introduction - Maintenance Safety Precautions
- Section 1. Specifications
- Section 2. General
- Section 3. Chassis & Turntable
- 3.1 Tires And Wheels
- 3.2 Torque Hub
- Oil Information
- Roll and Leak Testing
- Tightening and Torquing Bolts
- Main Disassembly
- Output Carrier Disassembly
- Input Carrier Disassembly
- Hub-Spindle Disassembly
- Spindle-Brake Disassembly
- Cover Disassembly
- Cover Assembly
- Input Carrier Sub-Assembly
- Output Planet Gear Sub-Assembly
- Spindle - Brake Sub-Assembly
- Hub-Spindle Sub-Assembly
- Cover Sub-Assembly
- Main Assembly
- Integral Brake Check
- 3.3 Free Wheeling Option
- 3.4 Drive Motor
- 3.5 Oscillating Axle Bleeding Procedure and Lockout Test
- 3.6 Steer Adjustments
- 3.7 Swing Drive
- 3.8 Swing Bearing
- 3.9 Swing Brake - Mico
- 3.10 Rotary Coupling
- 3.11 Generator
- 3.12 Deutz D2.9 L4 Engine
- 3.13 Deutz D2011 Engine
- 3.14 Spark Arrester Cleaning Instructions
- 3.15 Glow Plugs
- 3.16 Deutz EMR 2
- 3.17 Bio Fuel in Deutz Engines
- 3.18 GM Engine General Maintenance
- 3.19 GM Engine Dual Fuel System
- Fuel Filter
- Direct Electronic Pressure Regulator (DEPR)
- Air Fuel Mixer
- Electronic Throttle Control (ETC)
- Electric Lock Off
- Engine Control Module (ECM)
- Heated Exhaust Gas Oxygen Sensor
- Gasoline Multi Point Fuel Injection System (MPFI)
- Gasoline Fuel Pump
- Gasoline Pressure And Temperature Sensor Manifold
- Fuel Filter
- Fuel Injector Rail
- Fuel Injector
- 3.20 GM Engine Fuel System Repair
- Propane Fuel System Pressure Relief
- Propane Fuel System Leak Test
- Propane Fuel Filter Replacement
- Direct Electronic Pressure Regulator (DEPR) Maintenance And Inspection
- Check/Drain Oil Build-Up In 2-Stage Vaporizer
- Air Fuel Mixer/Throttle Control Device Maintenance And Inspection
- Exhaust System And Catalytic Converter Inspection And Maintenance
- Temperature Manifold Absolute Pressure (TMAP) Sensor
- Throttle Body (ETC) Replacement
- Mixer Replacement
- Electronic Pressure Regulator (EPR) Replacement
- Regulator Replacement
- Coolant Hose Replacement
- Vapor Hose Replacement
- Engine Control Module Replacement
- Heated Exhaust Gas Oxygen Sensor Replacement
- 3.21 GM Engine LPG Fuel System Diagnosis
- Section 4. Boom & Platform
- Section 5. Hydraulics
- 5.1 O-Ring Lubrication
- 5.2 Cylinders - Theory of Operation
- 5.3 Cylinder Checking Procedure
- 5.4 Cylinder Removal and Installation
- Cylinder Locations
- Main Boom Telescope Cylinder Removal
- Main Boom Telescope Cylinder Installation
- Main Boom Lift Cylinder Removal
- Main Boom Lift Cylinder Installation
- Upright Level Cylinder Removal
- Upright Level Cylinder Installation
- Tower Boom Lift Cylinder Removal
- Tower Lift Cylinder Installation
- Tower Telescope Cylinder Removal
- Tower Telescope Cylinder Installation
- 5.5 Hydraulic Cylinder repair
- Tower Boom Lift Cylinder
- Cleaning and Inspection
- Assembly
- Upright Level Cylinder
- Cleaning and Inspection
- Assembly
- Master Cylinder
- Cleaning and Inspection
- Assembly
- Main Boom Lift Cylinder
- Cleaning and Inspection
- Assembly
- Main Boom Telescope Cylinder
- Cleaning and Inspection
- Assembly
- Tower Boom Telescope Cylinder
- Cleaning and Inspection
- Assembly
- Platform Level (Slave) Cylinder
- Cleaning and Inspection
- Assembly
- Jib Lift Cylinder (AJ Only)
- Cleaning and Inspection
- Assembly
- Steer Cylinder
- Cleaning and Inspection
- Assembly
- Axle Lockout Cylinder
- 5.6 Hydraulic Pump (Gear)
- 5.7 Variable Pump
- 5.8 Hydraulic Component Start-Up
- 5.9 Pressure Setting Procedures
- Section 6. JLG Control System
- Section 7. Basic Electrical Information & Schematics

SECTION 2 - GENERAL
3121616 – JLG Lift – 2-1
SECTION 2. GENERAL
2.1 MACHINE PREPARATION, INSPECTION, AND
MAINTENANCE
General
This section provides information needed by personnel
responsible to place machine in operation readiness and
maintain its safe operating condition. For maximum service
life and safe operation, ensure all necessary inspections and
maintenance have been completed before placing machine in
service.
Preparation, Inspection, and Maintenance
It is important to establish and conform to a comprehensive
inspection and preventive maintenance program. The follow-
ing table outlines periodic machine inspections and mainte-
nance recommended by JLG Industries, Inc. Consult your
national, regional, or local regulations for further requirements
for aerial work platforms. Frequency of inspections and main-
tenance must be increased as environment, severity and fre-
quency of usage requires.
Pre-Start Inspection
It is the User’s or Operator’s primary responsibility to perform a
Pre-Start Inspection of the machine before use daily or at each
change of operator. Reference the Operator’s and Safety Man-
ual for Pre-Start Inspection procedures. The Operator and
Safety Manual must be read and understood in its entirety
before performing the Pre-Start Inspection.
Pre-Delivery Inspection and Frequent Inspection
The Pre-Delivery Inspection and Frequent Inspection shall be
performed by a qualified JLG equipment mechanic. JLG Indus-
tries, Inc. recognizes a qualified JLG equipment mechanic as a
person who, by possession of a recognized degree, certificate,
extensive knowledge, training, or experience, has successfully
demonstrated the ability and proficiency to service, repair, and
maintain the subject JLG product model.
The Pre-Delivery Inspection and Frequent Inspection proce-
dures are performed in the same manner, but at different
times. The Pre-Delivery Inspection shall be performed prior to
each sale, lease, or rental delivery. The Frequent Inspection
shall be accomplished for each machine in service for 3
months or 150 hours (whichever comes first); out of service for
a period of more than 3 months; or when purchased used. Fre-
quency of this inspection must be increased as environment,
severity and frequency of usage requires.
Reference the JLG Pre-Delivery and Frequent Inspection Form
and Inspection and Preventive Maintenance Schedule for
items requiring inspection. Reference appropriate areas of this
manual for servicing and maintenance procedures.
Annual Machine Inspection
The Annual Machine Inspection must be performed on an
annual basis, no later than thirteen (13) months from the date
of the prior Annual Machine Inspection. JLG Industries recom-
mends this task be performed by a Factory-Trained Service
Technician. JLG Industries, Inc. recognizes a Factory-Trained
Service Technician as a person who has successfully com-
pleted the JLG Service Training School for the subject JLG
product model. Reference the machine Service and Mainte-
nance Manual and appropriate JLG inspection form for perfor-
mance of this inspection.
Reference the JLG Annual Machine Inspection Form and
Inspection and Preventive Maintenance Schedule for items
requiring inspection. Reference appropriate areas of this man-
ual for servicing and maintenance procedures.
For the purpose of receiving safety-related bulletins, it is
important that JLG Industries, Inc. has updated ownership
information for each machine. When performing each Annual
Machine Inspection, notify JLG Industries, Inc. of current
machine ownership.
Preventive Maintenance
In conjunction with specified inspections, maintenance shall
be performed by a qualified JLG equipment mechanic. JLG
Industries, Inc. recognizes a qualified JLG equipment
mechanic as a person who, by possession of a recognized
degree, certificate, extensive knowledge, training, or experi-
ence, has successfully demonstrated the ability and profi-
ciency to service, repair, and maintain the subject JLG product
model.
Reference the Preventive Maintenance Schedule and appro-
priate areas of this manual for servicing and maintenance pro-
cedures. Frequency of service and maintenance must be
increased as environment, severity and frequency of usage
requires.