JLG H340AJ Boom Lift Service Manual
556 pages · Publication 31217121
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- Models
- H340AJ
- Manual type
- Service Manual
- Pages
- 556
- Publication
- 31217121
- Condition
- Brand new
What's inside
From the manual's own table of contents: 516 sections, 590 entries. See sample pages (PDF, 607 KB)
General
Hydraulic System Safety
Maintenance6 topics
- Operating Specifications
- Dimensional Data
- Capacities
- Tires
- Engine Data
- Hydraulic Oil
Oil Sampling4 topics
- Major Component Weights
- Maintenance and Lubrication
- Thread Locking Compound
- Torque Charts
SAE Fastener Torque Chart
Metric Fastener Torque Chart1 topic
- Machine Preparation, Inspection, and Maintenance
Preparation, Inspection, and Maintenance
Pre-Start Inspection
Pre-Delivery Inspection and Frequent Inspection
Annual Machine Inspection
Preventive Maintenance1 topic
- Service and Guidelines
Safety and Workmanship
Cleanliness
Components Removal and Installation
Component Disassembly and Reassembly
Pressure-Fit Parts
Bearings
Gaskets
Bolt Usage and Torque Application
Hydraulic Lines and Electrical Wiring
Hydraulic System
Lubrication
Battery
Lubrication and Servicing1 topic
- Lubrication and Information
Show all 516 sections
Hydraulic Oil
Changing Hydraulic Oil
Lubrication Specifications1 topic
- Cylinder Drift
Theory
Cylinder Leakage Test
Cylinder Thermal Drift2 topics
- Pins and Composite Bearing Repair Guidelines
- Welding on JLG Equipment
Do the Following When Welding on JLG Equipment
DO NOT Do the Following When Welding on JLG Equipment1 topic
- Tires & Wheels
Tire Replacement
Wheel and Tire Replacement
Wheel Installation6 topics
- Oscillating Axle System
- Lockout Cylinder Bleeding
- Oscillating Axle Lockout Test
- Drive System
- Drive Orientation System
- Drive Motor
Removal
Ball Bearing Repair/Replacement
Assembly/Disassembly
Installation2 topics
- Drive Hub
- Swing Motor
Preparation Before Disassembly
Disassembly and Inspection
Assembly
One Piece Stator Construction
Two Piece Stator Construction
Final Checks1 topic
- Swing Bearing
Turntable Bearing Mounting Bolt Condition Check
Wear Tolerance
Swing Bearing Torque Value
Disassembly2 topics
- Engine Operating States
- Kubota Engine
Retrieving Engine Hours
Fuel Level Sensor
Coolant Sensor
Engine Oil Pressure Switch
Glow Plugs6 topics
- Chassis Tilt Indicator System
- Fuel Reserve / Cut-Out System
- Hot Weather operation
- Cold Weather Operation
- Generator
- Battery Charger
Indications on the Charger 3-LED Display
Troubleshooting Instructions
Instructions for using the Delta-Q QuiQ Programmer CTQuiQ Programming Kit
Connecting a QuiQ Charger to your Computer
Starting QuiQ Programmer CT
Programming Delta-Q QuiQ and QuiQ-dci Chargers
View Charge Tracking Data with QuiQ Programmer CT
Selecting a Charge Profile
Battery Testing3 topics
- Battery Maintenance, Quarterly
- Counterweight
- Boom Systems
Platform Control Enable System
Transport Position Sensing System
Beyond Transport Position - Drive Speed Cutback System
Drive/Steer – Boom Function Interlock System (CE ONLY)
Platform Load Sensing System
Jib Lift End of Stroke Dampening
Ground Control Keyswitch System
Side Entry Platform
Function Speed Control System
Emergency Decent System1 topic
- Platform
Support Removal
Support Installation1 topic
- Boom Removal and Installation
Main Boom Removal
Mid Boom Removal
Lower Boom Removal
Lower Boom Installation
Mid Boom Installation
Main Boom Installation1 topic
- Boom Maintenance
Disassembly of the Main Boom
Inspection
Assembly of the Main Boom3 topics
- Boom Cleanliness Guidelines
- Hose Routing
- Powertrack Maintenance
Remove Link
Install New Link
Replace Fixed End Brackets
Replace Moving End Brackets1 topic
- Rotary Actuator
Theory of Operation
Required Tools
Before Disassembly
Installing Counterbalance Valve
Greasing Thrust Washers
Testing the Actuator
Testing the Actuator for Internal Leakage
Installation and Bleeding
Troubleshooting1 topic
- Skyguard®
Operation
Function Test
Diagnostics & Troubleshooting1 topic
- Lubricating O-Rings in the Hydraulic System
Cup and Brush
Dip Method
Spray Method
Brush-on Method1 topic
- Hydraulic Connection Assembly and Torque Specification
Tapered Thread Types
Straight Thread Types, Tube and Hose Connections
Straight Thread Types, Port Connections
Flange Connection Types
Tightening Methods
Assembly and Torque Specifications
Assembly Instructions for American Standard Pipe Thread Tapered (NPTF) Connections
Assembly Instructions for British Standard Pipe Thread Tapered (BSPT) Connections
Assembly Instructions for 37° (JIC) Flare Fittings
Assembly Instructions for 45° SAE Flare Fittings
Assembly Instructions for O-Ring Face Seal (ORFS) Fittings
Assembly Instructions for DIN 24° Flare Bite Type Fittings (MBTL and MBTS)
Assembly Instructions for Bulkhead (BH) Fittings
Assembly Instructions for O-Ring Boss (ORB) Fittings
Assembly Instructions for Adjustable Port End Metric (MFF) Fittings
Assembly Instructions for Metric ISO 6149 (MPP) Port Assembly Stud Ends
Assembly instructions for Adjustable Port End (BSPP) Fittings
Assembly Instructions for Flange Connections: (FL61 and FL62)
Double Wrench Method
FFWR and TFFT Methods
Adjustable Stud End Assembly
O-ring Installation (Replacement)1 topic
- Hydraulic Cylinders
Disassembly and Assembly Instructions
General Information
Standard of Maintenance
Inspection After Assembly
Disassembly Procedure
Tower Lift Cylinder
Main Lift Cylinder
Master Cylinder
Level Cylinder
Jib Lift Cylinder
Steer Cylinder
Telescope Cylinder
Axle Lockout Cylinder3 topics
- Hydraulic System
- Gear Pump
- Pressure Setting Procedure
P1 Main Relief Valve
P2 Main Relief Valve
Swing Relief Valve
Steer Relief Valve
Platform Level Up Relief Valve
Platform Level Down Relief Valve1 topic
- Oil Sampling
Procedure1 topic
- JLG Control System Analyzer Kit Instructions
Introduction
To Connect the JLG Control System Analyzer
Using the Analyzer
Changing the Access Level of the Hand Held Analyzer
Adjusting Parameters Using the Hand Held Analyzer
Machine Setup2 topics
- Machine Personality Settings and Function Speeds
- Machine Orientation When Setting Function Speeds
Test Notes3 topics
- CANbus Communications
- Calibration Instructions
- Operator Controls and Switches
Ground Control Switches
Platform Control Switches1 topic
- Control System Boom Switches
Tower Elevation and Boom Elevation Switch1 topic
- System Test
Test from the Platform
Test from the Ground Station3 topics
- Calibrating Steer
- Calibrating Tilt Sensor
- LSS System
Diagnostic Menu
Calibration Procedure
Testing & Evaluation3 topics
- Resetting The MSSO System
- General
- Multimeter Basics
Grounding
Backprobing
Min/Max
Polarity
Scale
Voltage Measurement
Resistance Measurement
Continuity Measurement
Current Measurement2 topics
- Applying Silicone Dielectric Compound to Electrical Connections
- Dielectric Grease Application
AMP Mate-N-Lok
AMP Faston
AMP Micro-Fit
AMP Mini Fit Jr
Mini Fit Sr
DIN Connectors
Exceptions
Enclosures
Carling Switch Connectors
Wedge Lock
Service - Voltage Reading1 topic
- Deutsch Connectors
DT/DTP Series Assembly
DT/DTP Series Disassembly
HD30/HDP20 Series Assembly
HD30/HDP20 Series Disassembly1 topic
- Battery Disconnect Switch
Function Check1 topic
- Batteries
Battery Stack Charging System
Battery State of Charge (SOC)
Battery Charging
Battery Thermal Adjustment Of Target Voltage
Long Term Storage Guidelines2 topics
- Ferrite Beads
- Wiring Harness Connector Labels
Connector Labels
Component Labels1 topic
- Electrical Schematics
Oil Sampling Port
Maintenance and Lubrication Diagram
Hydraulic Oil Operation Chart
Engine Oil Operation Chart - Kubota
Oscillating Axle Installation
Steering Installation
Turntable Component Location
Chassis Component Location
Drive System Installation
Drive Motor
Drive Motor Assembly
Drive Hub
Swing Motor - Cutaway
Swing Motor Removal and Installation
Swing Motor Assembly
Eyebolt for Counterweight
Swing Bearing Feeler Gauge Check
Swing Bearing Tolerance Measuring Point
Bearing Placement
Swing Bearing Torque Sequence
Swing Bearing Removal
Swing Gear Assembly
Cable Installation and Identification - Sheet 1 of 8
Cable Installation and Identification - Sheet 2 of 8
Cable Installation and Identification - Sheet 3 of 8
Cable Installation and Identification - Sheet 4 of 8
Cable Installation and Identification - Sheet 5 of 8
Cable Installation and Identification - Sheet 6 of 8
Cable Installation and Identification - Sheet 7 of 8
Cable Installation and Identification - Sheet 8 of 8
Engine Operating State Diagram
Kubota Engine - Sheet 1 of 2
Kubota Engine - Sheet 2 of 2
Fuel Level Sensor Schematic
Low Fuel Indicators
Engine Coolant Sensor
Engine Coolant Sensor Schematic
Engine Oil Pressure Switch Schematic
Engine Glow Plug Schematic
Generator Assembly
Battery Charger LED Display
QuiQ Programming Kit
Counterweight Bolt Torque
Location of Components Platform Support
Platform Support Torque Values (Single Cell LSS)
Main Boom Assembly
Jib/ Platform Support
Powertrack Assembly
Rotator - Exploded View
Rotator - Assembly Drawing
Rotator Counterbalance Valve
NPTF Thread
BSPT Thread
JIC Thread
SAE Thread
ORFS Thread
MTBL-MBTS Thread
Bulkhead Thread
ORB-MPP Thread
MFF-BSPP Thread
Torque Wrench Angle
FFWR Method
Acceptable Oil Leakage on Cylinder Rod
Hydraulic System - Sheet 1 of 8
Hydraulic System - Sheet 2 of 8
Hydraulic System - Sheet 3 of 8
Hydraulic System - Sheet 4 of 8
Hydraulic System - Sheet 5 of 8
Hydraulic System - Sheet 6 of 8
Hydraulic System - Sheet 7 of 8
Hydraulic System - Sheet 8 of 8
Hydraulic Tank
Valve Installation - Sheet 1 of 2
Valve Installation - Sheet 2 of 2
Main Control Valve Torque Specifications
Main Control Valve Identification
Fly Boom Control Valve Identification
Upright Control Valve Identification
Gear Pump
Hydraulic Schematic - Sheet 1 of 2
Hydraulic Schematic - Sheet 2 of 2
Hand Held Analyzer
Control System Block Diagram
Analyzer Flow Chart_Version P1.6 Software - Sheet 1 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 2 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 3 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 4 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 5 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 6 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 7 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 8 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 9 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 10 of 11
Analyzer Flow Chart_Version P1.6 Software - Sheet 11 of 11
Control Module Location
Ground Control Module - Sheet 1 of 3
Ground Control Module - Sheet 2 of 3
Ground Control Module - Sheet 3 of 3
Genset Control Module
Platform Control Module - Sheet 1 of 2
Platform Control Module - Sheet 2 of 2
Traction Control Module
Analyzer Connecting Points
System Test Flow Chart- Platform Tests
System Test Flow Chart- Ground Station Tests
Voltage Measurement (DC)
Current Measurement (DC)
Connector Assembly Figure 1
AMP Connector
Connector Assembly Figure 2
Connector Assembly Figure 3
Connector Assembly Figure 4
Connector Disassembly
Connector Installation
DT/DTP Contact Installation
DT/DTP Contact Removal
HD/HDP Contact Installation
HD/HDP Locking Contacts Into Position
HD/HDP Contact Removal
HD/HDP Unlocking Contacts
Battery Installation - Sheet 1 of 5
Battery Installation - Sheet 2 of 5
Battery Installation - Sheet 3 of 5
Battery Installation - Sheet 4 of 5
Battery Installation - Sheet 5 of 5
Battery Layout
Electrical Installation - Sheet 1 of 8
Electrical Installation - Sheet 2 of 8
Electrical Installation - Sheet 3 of 8
Electrical Installation - Sheet 4 of 8
Electrical Installation - Sheet 5 of 8
Electrical Installation - Sheet 6 of 8
Electrical Installation - Sheet 7 of 8
Electrical Installation - Sheet 8 of 8
Ferrite Beads - Electrical Components
Ferrite Beads - Drive Cables
Ferrite Beads - Engine Cables
Engine and Generator Electrical Components - Sheet 1 of 4
Engine and Generator Electrical Components - Sheet 2 of 4
Engine and Generator Electrical Components - Sheet 3 of 4
Engine and Generator Electrical Components - Sheet 4 of 4
Console Harness - Sheet 1 of 10
Console Harness - Sheet 2 of 10
Console Harness - Sheet 3 of 10
Console Harness - Sheet 4 of 10
Console Harness - Sheet 5 of 10
Console Harness - Sheet 6 of 10
Console Harness - Sheet 7 of 10
Console Harness - Sheet 8 of 10
Console Harness - Sheet 9 of 10
Console Harness - Sheet 10 of 10
Platform to Boom Harness - Sheet 1 of 2
Platform to Boom Harness - Sheet 2 of 2
LSS Harness
Lower Boom Harness - Sheet 1 of 2
Lower Boom Harness - Sheet 2 of 2
Valve Harness - Sheet 1 of 6
Valve Harness - Sheet 2 of 6
Valve Harness - Sheet 3 of 6
Valve Harness - Sheet 4 of 6
Valve Harness - Sheet 5 of 6
Valve Harness - Sheet 6 of 6
Turntable Harness - Sheet 1 of 11
Turntable Harness - Sheet 2 of 11
Turntable Harness - Sheet 3 of 11
Turntable Harness - Sheet 4 of 11
Turntable Harness - Sheet 5 of 11
Turntable Harness - Sheet 6 of 11
Turntable Harness - Sheet 7 of 11
Turntable Harness - Sheet 8 of 11
Turntable Harness - Sheet 9 of 11
Turntable Harness - Sheet 10 of 11
Turntable Harness - Sheet 11 of 11
Ground Panel Harness - Sheet 1 of 9
Ground Panel Harness - Sheet 2 of 9
Ground Panel Harness - Sheet 3 of 9
Ground Panel Harness - Sheet 4 of 9
Ground Panel Harness - Sheet 5 of 9
Ground Panel Harness - Sheet 6 of 9
Ground Panel Harness - Sheet 7 of 9
Ground Panel Harness - Sheet 8 of 9
Ground Panel Harness - Sheet 9 of 9
Cribbing Harness
Kubota Engine Harness - Sheet 1 of 6
Kubota Engine Harness - Sheet 2 of 6
Kubota Engine Harness - Sheet 3 of 6
Kubota Engine Harness - Sheet 4 of 6
Kubota Engine Harness - Sheet 5 of 6
Kubota Engine Harness - Sheet 6 of 6
Generator Harness - Sheet 1 of 4
Generator Harness - Sheet 2 of 4
Generator Harness - Sheet 3 of 4
Generator Harness - Sheet 4 of 6
Generator Harness - Sheet 5 of 6
Generator Harness - Sheet 6 of 6
Charger Harness - Sheet 1 of 3
Charger Harness - Sheet 2 of 3
Charger Harness - Sheet 3 of 3
Traction Harness - Sheet 1 of 8
Traction Harness - Sheet 2 of 8
Traction Harness - Sheet 3 of 8
Traction Harness - Sheet 4 of 8
Traction Harness - Sheet 5 of 8
Traction Harness - Sheet 6 of 8
Traction Harness - Sheet 7 of 8
Traction Harness - Sheet 8 of 8
Clearsky Harness - Sheet 1 of 4
Clearsky Harness - Sheet 2 of 4
Clearsky Harness - Sheet 3 of 4
Clearsky Harness - Sheet 4 of 4
Security Lock Harness - Sheet 1 of 2
Security Lock Harness - Sheet 2 of 2
Inverter Harness - Sheet 1 of 2
Inverter Harness - Sheet 2 of 2
Head and Tail Light Harness - Sheet 1 of 2
Head and Tail Light Harness - Sheet 2 of 2
Chassis Lights Harness - Sheet 1 of 2
Chassis Lights Harness - Sheet 2 of 2
Platform Work Light Harness - Sheet 1 of 2
Platform Work Light Harness - Sheet 2 of 2
White-Noise Harness
SkyGuard Harness - Sheet 1 of 2
SkyGuard Harness - Sheet 2 of 2
Generator to Platform Interface Harness - Sheet 1 of 3
Generator to Platform Interface Harness - Sheet 2 of 3
Generator to Platform Interface Harness - Sheet 3 of 3
Alert Beacon Option Harness - Sheet 1 of 3
Alert Beacon Option Harness - Sheet 2 of 3
Alert Beacon Option Harness - Sheet 3 of 3
Electrical Schematic - Sheet 1 of 18
Electrical Schematic - Sheet 2 of 18
Electrical Schematic - Sheet 3 of 18
Electrical Schematic - Sheet 4 of 18
Electrical Schematic - Sheet 5 of 18
Electrical Schematic - Sheet 6 of 18
Electrical Schematic - Sheet 7 of 18
Electrical Schematic - Sheet 8 of 18
Electrical Schematic - Sheet 9 of 18
Electrical Schematic - Sheet 10 of 18
Electrical Schematic - Sheet 11 of 18
Electrical Schematic - Sheet 12 of 18
Electrical Schematic - Sheet 13 of 18
Electrical Schematic - Sheet 14 of 18
Electrical Schematic - Sheet 15 of 18
Electrical Schematic - Sheet 16 of 18
Electrical Schematic - Sheet 17 of 18
Electrical Schematic - Sheet 18 of 18
Kubota Z482
DTE 10 Excel 15 Specs
DTE 10 Excel 32 Specs
Quintolubric 888-46 Specs
Mobil EAL H 46 Specs
Exxon Univis HVI 26 Specs
Critical Stability Weights
Inspection and Maintenance
Cylinder Drift
Inspection and Preventive Maintenance Schedule
Wheel Torque Chart
Drive System Mode Chart
Swing Motor Troubleshooting
Engine Oil Pressure Switch Conditions
Glow Plug Conditions
LED Flashes
Detailed LED Fault Indications
Charger/Converter Troubleshooting
Other Conditions
Part Number Reference
Charging Profile (Algorithm) Matrix
SkyGuard Function Table
NPTF Pipe Thread
BSPT Pipe Thread
37° Flare (JIC) Thread - Steel
37° Flare (JIC) Thread - Aluminum/Brass
45° Flare (SAE) - Steel
45° Flare (SAE) - Aluminum/Brass
O-ring Face Seal (ORFS) - Steel
O-ring Face Seal (ORFS) - Aluminum/Brass
DIN 24°Cone (MBTL & MBTS)
Bulkhead Fittings (BH) - INCH
Bulkhead Fittings (BH) - METRIC
O-ring Boss (ORB) - Table 1 of 6
O-ring Boss (ORB) - Table 2 of 6
O-ring Boss (ORB) - Table 3 of 6
O-ring Boss (ORB) - Table 4 of 6
O-ring Boss (ORB) - Table 5 of 6
O-ring Boss (ORB) - Table 6 of 6
Metric Flat Face Port (MFF) - L Series - Table 1 of 3
Metric Flat Face Port (MFF) - L Series - Table 2 of 3
Metric Flat Face Port (MFF) - L Series - Table 3 of 3
Metric Flat Face Port (MFF) - S Series - Table 1 of 3
Metric Flat Face Port (MFF) - S Series - Table 2 of 3
Metric Flat Face Port (MFF) - S Series - Table 3 of 3
Metric Pipe Parallel O-Ring Boss (MPP)
British Standard Parallel Pipe Port (BSPP) - L Series - Table 1 of 3
British Standard Parallel Pipe Port (BSPP) - L Series - Table 2 of 3
British Standard Parallel Pipe Port (BSPP) - L Series - Table 3 of 3
British Standard Parallel Pipe Port (BSPP) - S Series - Table 1 of 3
British Standard Parallel Pipe Port (BSPP) - S Series - Table 2 of 3
British Standard Parallel Pipe Port (BSPP) - S Series - Table 3 of 3
Flange Code (FL61 & FL62) -Inch Fasteners
Flange Code (FL61 & FL62) - Metric Fasteners
Special Tools
Piston Nut Torque
Gland Torque
Main Control Valve Specifications
Analyzer Abbreviations
Machine Configuration Programming Information (Software Version P1.6)
Machine Configuration Programming Settings (Software Version P1.6)
Machine Personality Settings and Function Speed
Function Speeds
Calibration Instructions
Ground Control Switch Inputs
Platform Control Joystick Inputs
Platform Control Switch Inputs
System Test Messages
Machine Diagnostics Parameters
Diagnostic Menu Descriptions
Accessory Weights
SkyGlazier Capacity Reductions
Pipe Rack Capacity Reductions
LSS Troubleshooting Chart
Diagnostic Trouble Codes
Wiring Harness Connector Labels
Inside this manual
Real pages from this service manual (556 pages). Open the sample pages (PDF, 604 KB)
- Specifications, page 121: SECTION 3 - CHASSIS & TURNTABLE
- Troubleshooting, page 169: SECTION 4 - BOOM & PLATFORM
- Diagram, page 433: WIRING HARNESS CONNECTOR LABELS
- Color page, page 144: SECTION 4 - BOOM & PLATFORM
- Color page, page 82: SECTION 3 - CHASSIS & TURNTABLE
Other manuals for this machine
Save 10% on 2 manuals, 15% on 3 or more. Other manuals for the H340AJ are listed below. Editions cover different serial number ranges: check the serial coverage and tick only the ones that match your machine.
This manual: Service Manual 31217121$69.51
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This is a service manual
Here's how it compares to the other manual types.
This manual
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 556 pages
Quantity one is the manual described above.
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Other editions and similar models
Questions about model, serial number, engine coverage or contents? Contact us before purchasing and we'll help confirm it's the right manual. Please verify the manual type, machine model, serial number range and engine coverage before purchasing: manuals ordered in error carry a 20% restocking fee (return policy).