Service Manual
Models
534D-9,
534D-10
& 544D
534D-9 & 534D-10
S/N 0160000447 & After
544D
S/N 0160000192 & After
31200170
Revised
November 6, 2008
EFFECTIVITY PAGE
31200170 534D-9, 534D-10 & 544D a
February 5, 2007 - A - Original Issue Of Manual
May 7, 2008 - B - Added second battery on page 2.6. Updated Tire Specs on page 2.8. Revised Warnings on pages 3.4,
3.21, 3.32, 4.3, 5.3, 5.11, 5.13, 5.14, 6.3, 8.3 & 8.21. Added Hyd Sub Assy Removal/Install on pages 3.30, 3.31 & 3.32.
Changed Danger, Warning, Caution & Notice as required. Added Fork Info on page 3.43. Added Radiator Cap text on
Page 1.4.
November 6, 2008 - C - Replaced Gradall branding with JLG brand.
EFFECTIVITY PAGE
534D-9, 534D-10 & 544D 31200170 -b
SECTION CONTENTS
Section Subject Page
534D-9, 534D-10 & 544D
i
Section 1
Safety Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.2 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.3 Operator & Safety Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.4 Do Not Operate Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.5 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.6 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.7 Safety Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
Section 2
General Information and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1
2.1 Replacement Parts and Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2
2.2 Torque Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3
2.3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6
2.4 Fluid and Lubricant Capacities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.9
2.5 Service and Maintenance Schedules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.10
2.6 Lubrication Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.12
Section 3
Boom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1
3.1 Boom System Component Terminology 534D-9, 534D-10 . . . . . . . . . . . . . . . . . . . . . . 3.3
3.2 Boom System - Three Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.4
3.3 Boom Maintenance - Three Section (Complete Removal) . . . . . . . . . . . . . . . . . . . . . . . 3.4
3.4 Boom Maintenance - Three Section (Individual Section Removal) . . . . . . . . . . . . . . . . 3.9
3.5 Boom Cables - Three Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.12
3.6 Auxiliary Electric Cable - Three Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.17
3.7 Extend/Retract Cylinder Removal and Installation - Three Section . . . . . . . . . . . . . . . . 3.18
3.8 Boom System Component Terminology 544D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.20
3.9 Boom System - Four Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.21
3.10 Boom Maintenance - Four Section (Complete Removal) . . . . . . . . . . . . . . . . . . . . . . . . 3.21
3.11 Boom Maintenance - Four Section (Individual Section Removal) . . . . . . . . . . . . . . . . . 3.28
3.12 Boom Extend and Retract Chains - Four Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.32
3.13 Boom Section Separation Adjustment - Four Section . . . . . . . . . . . . . . . . . . . . . . . . . . 3.38
3.14 Hydraulic Sub-Assembly Removal/Installation - Four Section . . . . . . . . . . . . . . . . . . . . 3.38
3.15 Boom Wear Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.41
3.16 Quick Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.42
3.17 Forks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.43
3.18 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.44
Section 4
Cab and Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1
4.1 Operator’s Cab and Covers Component Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 4.2
4.2 Operator’s Cab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3
4.3 Cab Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3
4.4 Cab Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.8
4.5 Cab Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.9
Section Subject Page
ii
534D-9, 534D-10 & 544D
Section 5
Axles, Wheels and Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1
5.1 Axles, Wheel and Tire Component Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.2
5.2 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3
5.3 Axle Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.3
5.4 Rear Drive Hubs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.9
5.5 Rear Steer Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.10
5.6 Wheels and Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.11
5.7 Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.13
5.8 Towing a Disabled Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.13
Section 6
Hydrostatic Drive Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1
6.1 Drive Pump Assembly Component Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2
6.2 Drive Pump Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3
6.3 Drive Pump Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3
6.4 Drive Pump Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3
6.5 Drive Pump Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.3
6.6 Hydrostatic Drive Performance Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5
Section 7
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1
7.1 Introduction: John Deere 4045TF275 & 4045HF275 . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.2
7.2 Engine Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.4
7.3 Specifications and Maintenance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.4
7.4 Introduction: Cummins QSB4.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5
7.5 Engine Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.7
7.6 Specifications and Maintenance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.7
7.7 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.7
7.8 Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.9
7.9 Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.9
7.10 Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.11
7.11 Air Cleaner Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.11
7.12 Engine Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.12
7.13 Engine Drive Plate/Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.14
7.14 Engine Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.15
Section 8
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.1
8.1 Hydraulic Component Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2
8.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3
8.3 Hydraulic Pressure Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.4
8.4 Hydraulic Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.6
8.5 Hydraulic Reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.12
8.6 Engine Implement Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.13
8.7 Drive Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.14
8.8 Control Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.16
8.9 Hydraulic Cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.21
Section 9
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1
9.1 Electrical Component Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.2
9.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3
Section Subject Page
iii
534D-9, 534D-10 & 544D
9.3 Service Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3
9.4 Fuses and Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3
9.5 Electrical System Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.4
9.6 Engine Start Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.9
9.7 Charging Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.10
9.8 Windshield Wiper Motor (If Equipped) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.11
9.9 Cab Heater and Fan (If Equipped) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.12
9.10 Solenoids, Sensors and Senders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.12
9.11 Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.15
9.12 Dash Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.15
9.13 Transmission Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.17
9.14 Traction Lock Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.17
9.15 Troubleshooting - Cummins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.18
Section Subject Page
iv
534D-9, 534D-10 & 544D
1.1
534D-9, 534D-10 & 544D
Section 1
Safety Practices
Contents
PARAGRAPH TITLE PAGE
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.2 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.3 Operator & Safety Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.4 Do Not Operate Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2
1.5 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.5.1 Safety Alert System and Signal Words . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.6 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.6.1 Personal Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.6.2 Equipment Hazards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3
1.6.3 General Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
1.6.4 Operational Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
1.7 Safety Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4
Safety Practices
1.2
534D-9, 534D-10 & 544D
1.1 INTRODUCTION
This service manual provides general directions for
accomplishing service and repair procedures. Following
the procedures in this manual will help assure safety and
equipment reliability.
Read, understand and follow the information in this
manual, and obey all locally approved safety practices,
procedures, rules, codes, regulations and laws.
These instructions cannot cover all details or variations in
the equipment, procedures, or processes described, nor
provide directions for meeting every possible contingency
during operation, maintenance, or testing. When additional
information is desired consult the local JLG distributor.
Many factors contribute to unsafe conditions: carelessness,
fatigue, overload, inattentiveness, unfamiliarity, even
drugs and alcohol, among others. For optimal safety,
encourage everyone to think, and to act, safely.
Appropriate service methods and proper repair
procedures are essential for the safety of the individual
doing the work, for the safety of the operator, and for the
safe, reliable operation of the machine. All references to
the right side, left side, front and rear are given from the
operator’s seat looking in a forward direction.
Supplementary information is available from JLG in the
form of Service Bulletins, Service Campaigns, Service
Training Schools, the JLG website, other literature, and
through updates to the manual itself.
1.2 DISCLAIMER
All information in this manual is based on the latest
product information available at the time of publication.
JLG reserves the right to make changes and
improvements to its products, and to discontinue the
manufacture of any product, at its discretion at any time
without public notice or obligation.
1.3 OPERATOR & SAFETY MANUAL
The mechanic must not operate the machine until the
Operator & Safety Manual has been read & understood,
training has been accomplished and operation of the
machine has been completed under the supervision of an
experienced and qualified operator.
An Operator & Safety Manual is supplied with each
machine and must be kept in the manual holder located
in the cab. In the event that the Operator & Safety Manual
is missing, consult the local JLG distributor before
proceeding.
1.4 DO NOT OPERATE TAGS
Place Do Not Operate Tags on the ignition key switch and
the steering wheel before attempting to perform any
service or maintenance. Remove key and disconnect
battery leads.
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Description
This is a highly detailed factory service repair manual for the JLG Gradall Telehandlers 534D-9, 534D-10 & 544D ANSI. The manual provides step-by-step instructions and detailed illustrations, making it suitable for both do-it-yourself enthusiasts and experienced mechanics. It covers safety practices, general information, specifications, boom, cab and covers, axles, wheels and tires, hydrostatic drive pump, engine, hydraulic system, electrical system, and more.
The manual comes in PDF format, compatible with all versions of Windows and Mac. It is in English and requires Adobe Reader and Win to access. With this repair manual, you can keep your vehicle working properly without unnecessary expenses. Instant access is available, allowing you to print all pages as needed.
- Models Covers:
- JLG Gradall Telehandlers 534D-9, 534D-10 & 544D ANSI
- P/N: 31200170
- Service Repair Manual Covers:
- Section 1 Safety Practices
- Section 2 General Information and Specifications
- Section 3 Boom
- Section 4 Cab and Covers
- Section 5 Axles, Wheels and Tires
- Section 6 Hydrostatic Drive Pump
- Section 7 Engine
- Section 8 Hydraulic System
- Section 9 Electrical System
- And More......
