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JLG H340AJ - Service Manual

JLG H340AJ
272 pages
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Service and Maintenance Manual
Model
H340AJ
3121634
February 08, 2019 - Rev E
AS/NZS
Discount-Equipment.com

Table of Contents

Other manuals for JLG H340AJ

Questions and Answers

  • T
    timothyramirezAug 2, 2025
    What to do if JLG H340AJ charger shutdown due to high internal temperature?
    • K
      Kathy MyersAug 2, 2025
      If the JLG Boom Lifts charger shuts down due to high internal temperature, make sure there is sufficient cooling airflow. You can reset the charger by interrupting AC power for at least 15 seconds.
  • F
    Frederick ThompsonAug 7, 2025
    What to do if JLG H340AJ Boom Lifts experience charge timeout?
    • R
      Ryan BooneAug 7, 2025
      If the JLG Boom Lifts experiences a charge timeout, which can be caused by the battery pack not reaching the required voltage or the charger output being reduced due to high temperatures, check the connections and ensure that the battery type matches the selected charge profile. Also, operate the charger at a lower ambient temperature. To reset the charger, interrupt AC power for 15+ seconds.
  • A
    Angela FitzgeraldAug 12, 2025
    What to do if JLG Boom Lifts indicates battery low voltage?
    • M
      Mark BartonAug 13, 2025
      If the JLG Boom Lifts indicates a battery low voltage, check the battery size and condition. This fault should clear automatically once the condition has been corrected.
  • K
    kwilsonAug 17, 2025
    What to do if JLG Boom Lifts indicates battery high voltage?
    • L
      lorijacobsAug 18, 2025
      If the JLG Boom Lifts indicates a battery high voltage, check the battery size and condition. This fault will clear automatically once the condition has been corrected.
  • M
    Mrs. Melissa CarpenterAug 22, 2025
    What to do if JLG H340AJ charger indicates internal fault?
    • L
      Lisa BeckAug 23, 2025
      If the JLG Boom Lifts charger indicates an internal fault, reset it by interrupting AC power for at least 15 seconds. If the fault persists, return it to a service depot.
  • M
    Mark RodriguezAug 27, 2025
    What to do if battery of JLG H340AJ could not be trickle charged up to minimum voltage?
    • H
      Henry NelsonAug 27, 2025
      If the battery of JLG Boom Lifts could not be trickle charged up to minimum voltage, check for shorted or damaged cells. Reset the charger by interrupting AC power for 15+ seconds.

Summary

SECTION A. INTRODUCTION - MAINTENANCE SAFETY PRECAUTIONS

A GENERAL

Provides general safety precautions for aerial platform maintenance to avoid injury and equipment damage.

B HYDRAULIC SYSTEM SAFETY

Highlights the dangers of high hydraulic pressures and the need to relieve system pressure before work.

C MAINTENANCE

Lists critical safety precautions for maintenance, including parts, refueling, jewelry, clothing, and general warnings.

SECTION 1 - SPECIFICATIONS

1.1 OPERATING SPECIFICATIONS

Details key operational parameters like capacity, travel grade, drive speed, and hydraulic pressure.

1.8 MAINTENANCE AND LUBRICATION

Outlines lubrication requirements, types, intervals, and specifications for various components.

1.5 ENGINE DATA

Provides specifications for the Kubota Z482 engine, including type, cylinders, bore, stroke, and output.

SECTION 3 - CHASSIS & TURNTABLE

3.1 TIRES & WHEELS

Covers tire replacement guidelines, characteristics, and wheel installation with torque specifications.

3.5 DRIVE SYSTEM

Explains the drive system components, operator control, and drive modes based on boom position.

3.10 SWING BEARING

Details the removal and installation of the swing bearing assembly, including torque and inspection procedures.

SECTION 4 - BOOM & PLATFORM

4.1 BOOM SYSTEMS

Describes boom control systems, transport position sensing, and jib lift dampening for safe operation.

4.3 BOOM REMOVAL AND INSTALLATION

Provides step-by-step procedures for removing and installing main, mid, and lower boom assemblies.

4.4 BOOM MAINTENANCE

Outlines procedures for boom disassembly, inspection, and main boom assembly after maintenance.

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS

5.2 HYDRAULIC CONNECTION ASSEMBLY AND TORQUE SPECIFICATION

Details various hydraulic connection types, assembly instructions, and torque specifications for safe installation.

5.3 HYDRAULIC CYLINDERS

Covers disassembly, assembly, and inspection procedures for hydraulic cylinders, including acceptable leakage.

5.6 PRESSURE SETTING PROCEDURE

Explains how to set hydraulic pressures, considering temperature, and outlines procedures for relief valves.

SECTION 6 - JLG CONTROL SYSTEM

6.1 JLG CONTROL SYSTEM ANALYZER KIT INSTRUCTIONS

Guides on using the JLG Control System Analyzer Kit for diagnostics, setup, and personality adjustments.

6.2 MACHINE PERSONALITY SETTINGS AND FUNCTION SPEEDS

Details adjustable personality settings and function speeds for optimizing machine performance.

JLG H340AJ Specifications

General IconGeneral
Platform Capacity500 lbs
Drive Speed3.5 mph
Ground Clearance8 in
Gradeability30%
Fuel TypeDiesel
Engine Power24.8 hp
Turntable Rotation360 Degrees Continuous
Platform Size30 in x 72 in

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