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JLG 740AJ Boom Lift Service Manual

582 pages · Publication 3121160

$69.81
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Models
740AJ
Manual type
Service Manual
Pages
582
Publication
3121160
Condition
Brand new
JLG 740AJ Boom Lift Service Manual, publication 3121160

What's inside

From the manual's own table of contents: 584 sections, 669 entries. See sample pages (PDF, 628 KB)

General
Hydraulic System Safety
Maintenance1 topic
  • Operating Specifications
Dimensional Data
Capacities1 topic
  • Component Data
Engine Data
Tires
Swing System
Hydraulic Drive Pump
Variable Displacement Pump
Hydraulic Load Sense Pump
Auxiliary Power Pump
Hydraulic Filter - In-line2 topics
  • Torque Requirements
  • Lubrication
Hydraulic Oil3 topics
  • Cylinder Specifications
  • Major Component Weights
  • Pressure Settings
Critical Stability Weights5 topics
  • Maintenance and Lubrication
  • Draining Oil Build Up From The Propane Regulator (Prior to SN 0300134626)
  • Propane Fuel Filter Replacement
  • Propane Fuel System Pressure Relief
  • Machine Preparation, Inspection, and Maintenance
Preparation, Inspection, and Maintenance
Pre-Start Inspection
Pre-Delivery Inspection and Frequent Inspection
Annual Machine Inspection
Preventative Maintenance1 topic
  • Service and Guidelines
Safety and Workmanship
Cleanliness
Components Removal and Installation
Component Disassembly and Reassembly
Show all 584 sections
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
Changing Hydraulic Oil
Lubrication Specifications1 topic
  • Cylinder Drift Test
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 Inflation
Tire Damage
Tire Replacement
Wheel Replacement
Wheel Installation2 topics
  • Emergency Towing
  • Wheel Drive Assembly (Prior to SN 0300138447)
Removal
Installation
Disassembly
Cleaning and Inspection
Repair
Assembly
Bleeding
Inspection
Spare Parts Kits
Replacing the Drive Shaft Seal
Disassembly and Assembly
Assembly Notes
Taper Roller Bearing Initial Tension
Testing and Setup
Drive Motor Adjustment Procedure (Prior to SN 0300138447)
Description
Shaft Seal Replacement
Loop Flushing Valve
Troubleshooting
Initial Start-up Procedures1 topic
  • TABLE OF CONTENTS Swing Bearing
Turntable Bearing Mounting Bolt Condition Check
Wear Tolerance
Swing Bearing Replacement
Swing Bearing Torque Values2 topics
  • Swing Hub Removal
  • Swing Hub Installation
Procedure For Setting Swing Gear Backlash
Swing Drive Lubrication
Hub Shaft Sub-Assembly
Carrier Sub-Assembly
Main Assembly Procedure1 topic
  • Swing Drive Brake (Prior to SN 0300134352)
Disassembly and inspection
One Piece Stator Construction
Roll, Leak and Brake Testing
Tightening and Torquing Bolts
Motor Control Valve Disassembly
Motor and Brake Disassembly
Main Drive Disassembly
Hub-Shaft Disassembly
Carrier Disassembly
Hub-Shaft Assembly
Carrier Assembly
Main Drive Assembly
Motor and Brake Assembly
Motor Control Valve Assembly2 topics
  • Rotary Coupling (Prior to SN 0300138447)
  • Tilt Alarm Switch
Manual Adjustment5 topics
  • Spark Arrester Cleaning Instructions
  • Deutz Engine
  • Ford Engine
  • GM Engine
  • Generator
Every 250 hours
Every 500 hours
Overload Protection
Inspecting Brushes, Replacing Brushes, and Cleaning Slip Rings1 topic
  • Dual Fuel System
Changing from Gasoline to LP Gas
Changing from LP Gas to Gasoline1 topic
  • EFI Engine
Performing Diagnostics
Engine Module and Sensors
Fuel System1 topic
  • Ford LPG System
Regulator
Megajector
Mixer
Lockoff Solenoid
Megajector Diagnostic Code Descriptions1 topic
  • Electric Governor Installation and Adjustments - Ford LRG425 Engine
Quick-start Installations
Mounting-Actuator
Linkage
Mounting-Controller
Wiring
Power Distribution
Check-Out and Initial Start-Up Procedures
Automatic Choke Adjustment Procedure2 topics
  • Deutz EMR 2
  • GM Engine General Maintenance
Maintenance of the Drive Belt
Engine Electrical System Maintenance
Checking/Filling Engine Oil Level
Changing The Engine Oil
Coolant Fill Procedure - Dual Fuel Engine1 topic
  • GM Engine Dual Fuel System
Fuel Filter
Electric Lock Off
EPR Assembly
Low Pressure Regulator (LPR)
Air Fuel Mixer
Electronic Throttle Control (ETC)
Engine Control Module
Heated Exhaust Gas Oxygen Sensor
Gasoline Multi Point Fuel Injection System (MPFI)
Gasoline Fuel Pump
Gasoline Pressure And Temperature Sensor Manifold
Fuel Injector Rail
Fuel Injector1 topic
  • TABLE OF CONTENTS GM Engine Fuel System Repair
Propane Fuel System Pressure Relief
Propane Fuel System Leak Test
Propane Fuel Filter Replacement
Electronic Pressure Regulator (EPR) Assembly Replacement
Temperature Manifold Absolute Pressure (TMAP) Sensor
Electronic Throttle Control Replacement
Mixer Replacement
Coolant Hose Replacement
Vapor Hose Replacement
Engine Control Module Replacement
Heated Exhaust Gas Oxygen Sensor Replacement1 topic
  • GM Engine LPG Fuel System Diagnosis
Fuel System Description
Diagnostic Aids1 topic
  • Air Compressor
Oil Injection
Inlet Valve and Control Valving
Air Filter Unit
Oil Reservoir and Primary Oil Separation
Secondary Spin-On Oil Coalescer/Separator
Spin-On Oil Filter
Minimum Pressure Valve/Check Valve Assembly
Hydraulic Drive System
Compressor Cooling System
Initial Startup
Normal Startup Procedure
Normal Shutdown Procedure
Daily Operation
General Maintenance
Lubrication Guide
Oil Filter Replacement
Coalescer (Air/Oil Separator) Replacement
Air Filter Replacement
Belts - Tightening and Replacement
Cooler Core Cleaning (Exterior)
Adding/Changing Compressor Oil
Pressure Adjustments
Intake Control
Minimum Pressure Valve
Compressor Thermal Valve
Safety Shutdown Systems2 topics
  • Counterweight
  • Platform
Platform/Support Removal
Support Installation3 topics
  • Rotator and Slave Cylinder
  • Main Boom Powertrack
  • Powertrack Maintenance
Flat Bar Removal
Round Bar/Poly Bar Removal
Removing and Installing Links
Installing a New Flat Bar
Installing a New Round Bar/Poly Roller
Replacing a Fixed End Bracket
Replacing a Moving End Bracket
Replacing a One Piece Bracket3 topics
  • Boom Cleanliness Guidelines
  • Main Boom Assembly
  • Upright
Upright Level Cylinder Removal1 topic
  • Tower Boom Assembly
Tower Out of Sync2 topics
  • Articulating Jib Boom
  • Limit Switches Adjustment
Main Boom Horizontal Limit Switch
Tower Boom Horizontal Limit Switch
Platform Sections Replacement1 topic
  • Wear Pads
Tower Boom
Main Boom
Theory of Operation
Required Tools
Installing Counterbalance Valve
Testing the Actuator
Installation and Bleeding1 topic
  • Drive Card Setup Procedures
Lift, Swing, and Drive Cards
Flow Control Card2 topics
  • Foot Switch Adjustment
  • TABLE OF CONTENTS Upright Monitoring System
Re-Synchronizing Upright
Calibration - Pre ADE Machines
Calibration - ADE Equipped Machines
Calibration Faults
Function Check
Service Mode/Tower Boom Retrieval1 topic
  • UMS Troubleshooting and Fault Messages Non-ADE Machines
Tower Lift Down Permanently closed
Backward Stability Concern Message
Forward Stability Concern Message
UMS Out of Usable Range Message
Battery Voltage < 9.0 Volts
Battery Voltage > 16.0 Volts
UMS Sensor Not Calibrated Message
UMS Sensor Faulted
Tower Lift Down Output Short to Ground or Open Circuit
Tower Lift Down Output Short to Battery
Platform Indicator Output Short to Ground or Open Circuit
Platform Indicator Output Short to Battery
Ground Indicator Output Short to Ground
Ground Indicator Output Short to Battery
Turntable Sensor Not Calibrated Message
Turntable Sensor Faulted
EEPROM checksums failure1 topic
  • UMS Troubleshooting and Fault Messages-ADE Machines
Auto Detection Input Low Message
UMS Sensor Communications lost
Out of Usable Range Message
UMS Sensor Faulted Message
Incompatible Software Detected Message1 topic
  • Use and Care of Fall Arrest System
Prior to Use Inspection
Inspecting Cable Tension and Slip Indicator
Annual Inspection and Certification2 topics
  • Platform Load Sensing System
  • Lubricating O-Rings in the Hydraulic System
Cup and Brush
Dip Method
Spray Method
Brush-on Method1 topic
  • Valves - Theory Of Operation
Solenoid Control Valve - Rexroth
Relief Valves2 topics
  • Holding Valve Checks
  • Cylinders - Theory Of Operation
Systems Incorporating Double Acting Cylinders
Systems Incorporating Holding Valves1 topic
  • Cylinder Checking Procedure
Cylinders Without Counterbalance Valves - Master Cylinder and Steer Cylinders
Cylinders With Single Counterbalance Valve
Cylinders With Dual Counterbalance Valves1 topic
  • Cylinder Repair
Upright Level Cylinder
Jib Lift Cylinder
Main Boom Lift Cylinder
Tower Lift Cylinder
Master Cylinder
Slave Cylinder
Steer Cylinder (Prior to SN 0300142664)
Main Telescope Cylinder1 topic
  • Cylinder Removal and Installation
Main Boom Telescope Cylinder Removal
Main Boom Telescope Cylinder Installation
Main Lift Cylinder Removal
Main Lift Cylinder Installation
Upright Level Cylinder Installation
Tower Boom Lift Cylinder Removal
Tower Boom Lift Cylinder Installation
Slave Cylinder Removal
Slave Cylinder Installation2 topics
  • Hydraulic Pump W/Hayes Pump Drive Coupling Lubrication
  • Pressure Setting Procedures
Set Up the Function Pump
Adjustments Made At The Main Valve Block
Wheel Steer (If Equipped)4 topics
  • Hydraulic Oil Change-Out Procedure
  • Hydraulic Component Start-Up Procedures and Recommendations
  • Rexroth Variable Displacement Pump (Prior to SN 0300121643)
  • Sauer Piston Pump
Control Assembly
Plug and Fitting Sizes and Torques1 topic
  • Eaton Piston Pump
Servo Controlled Piston Pump
Charge Pump Adapter Assembly
Manual Servo Control Basic Assembly
Manual Servo Control Assembly Options
Rotating Kit Assembly
Fault- logic Trouble Shooting
Start-up Procedure2 topics
  • Hydraulic Schematics
  • 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 Configuration Using the Hand Held Analyzer
Machine Setup
Level Vehicle Description2 topics
  • TABLE OF CONTENTS CANbus Communications
  • Machine Orientation When Doing Speed Tests
Test Notes1 topic
  • Machine Personality Settings
Analyzer Diagnostics Menu Structure2 topics
  • General
  • Multimeter Basics
Grounding
Backprobing
Min/Max
Polarity
Scale
Voltage Measurement
Resistance Measurement
Continuity Measurement
Current Measurement1 topic
  • Applying Silicone Dielectric Compound to Electrical Connections
Installation of Dielectric Grease
Deutsch HD, DT, DTM, DRC Series
AWP Seal
AMP Mate-N-Lock
DIN Connectors
Exclusions1 topic
  • AMP Connector
Applying Silicone Dielectric Compound to AMP 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
  • Electrical Schematics
Operator Maintenance and Lubrication Diagram
Filter Lock Assembly
Torque Chart - Sheet 1 of 5 (SAE Fasteners)
Torque Chart - Sheet 2 of 5 (SAE Fasteners)
Torque Chart - Sheet 3 of 5 (SAE Fasteners)
Torque Chart - Sheet 4 of 5 (Metric fasteners)
Torque Chart - Sheet 5 of 5 (Metric Fasteners)
Engine Operating Temperature Specifications - Deutz
Engine Operating Temperature Specifications - Ford
Engine Operating Temperature Specifications - GM
Drive Disconnect Hub
Axle and Steering Installation - Sheet 1 of 2
Axle and Steering Installation - Sheet 2 of 2
Chassis Component Location
Turntable Component Location
Drive Hub Installation (Prior to SN 0300138447)
Drive Hub (Fairfield)
Drive Motor Cutaway
Flow Control Pilot Valves
Drive Motor Adjustment (Prior to SN 0300138447)
Drive Motor Cross Section
Removing the Shaft Seal
Loop Flushing Spool
Plugs, Fittings, and Speed Sensor
End Cap
Valve Plate & Rear Shaft Bearing
Cylinder Kit
Shaft Seal
Shaft & Front Bearing
Swash Plate & Servo Piston
Cylinder Kit Disassembly
Servo Piston
Cylinder Kit Assembly
Swash Plate and Journal Bearing
Shaft and Front Bearing
Cylinder Kit Installation
Servo Spring and Minimum Angle Stop
Valve Plate and Rear Bearing
Plugs and Fittings Installation
Swing Bearing Tolerance Boom Placement - (Sheet 1 of 2)
Swing Bearing Tolerance Boom Placement - (Sheet 2 of 2)
Swing Bolt Feeler Gauge Check
Swing Bearing Tolerance Measuring Point
Swing Bearing Removal
Swing Bearing Torque Sequence
Swing Drive Installation
Swing Drive Brake (Prior to SN 0300134352)
Swing Drive Motor (Prior to SN 0300134352)
Motor Control Valve
Motor and Brake
Hub-Shaft
Carrier
Rotary Coupling Seal Installation (Prior to SN 0300138447)
Rotary Coupling Cutaway (Prior to SN 0300138447)
Rotary Coupling Port Location (9 Port) (Prior to SN 0300138447)
Rotary Coupling Installation (Prior to SN 0300138447)
Rotary Coupling Seal Installation (SN 0300138447 through 0300185827)
Rotary Coupling Installation (SN 0300138447 through 0300185827)
Tilt Switch Adjustment
Auxiliary Pump
Auxiliary Pump Location
Ford LRG-425 Engine Assembly (Prior to SN 0300077500)
GM Engine Assembly (Prior to SN 0300140592) - Sheet 1 of 2
GM Engine Assembly (Prior to SN 0300140592) - Sheet 2 of 2
Inspecting Generator Brushes, Replacing Brushes, and Cleaning Slip Rings
EFI Component Location
ECM/EPM Identification
Typical Fuel System
LPG System Components
EMR 2 Engine Side Equipment
Deutz EMR 2 Troubleshooting Flow Chart
Deutz EMR 2 Vehicle Side Connection Diagram
Deutz EMR 2 Engine Side Connection Diagram - Sheet 1 of 2
Deutz EMR 2 Engine Side Connection Diagram - Sheet 2 of 2
EMR 2 Engine Plug Pin Identification
EMR 2 Vehicle Plug Pin Identification
EMR2 Fault Codes - Sheet 1 of 5
EMR2 Fault Codes - Sheet 2 of 5
EMR2 Fault Codes - Sheet 3 of 5
EMR2 Fault Codes - Sheet 4 of 5
EMR2 Fault Codes - Sheet 5 of 5
Engine Oil Dip Stick
Electric Fuel Lock Off
Low Pressure Regulators
ETC throttle control device
LPG Engine Control Unit (ECM)
ECM Assembly
Heated Exhaust Gas Oxygen Sensor (HEGO)
Gasoline Fuel Pressure and Temperature Manifold Assembly
Pressure Regulator Section
(TMAP) Sensor & Electronic Throttle Control (ETC)
Mixer Assembly
Air Compressor
Counterweight
Location of Components Platform Support
Platform Support Torque Values (Prior to SN 0300130881)
Platform Support Torque Values (SN 0300130881 through 0300185827)
Location of Components - Rotator and Slave Cylinder
Boom Power Track Components
Location of Components - Upright
Tower Boom Removal
Location of Components - Articulating Jib
Boom Valve and Limit Switches Location - Sheet 1 of 2
Boom Valve and Limit Switches Location - Sheet 2 of 2
Platform Section Replacement
Location and Thickness of Wear Pads
Removing Portion of End Cap
Heating Setscrews
Removing Setscrew
Removing End Cap
Removing Shaft from Housing
Removing Sleeve from Housing
Actuator Timing
Rotator Assembly (HELAC)
Rotator Counterbalance Valve
Control Card
Releveling Valve
Boom Upright Positioning
UMS Sensor Location
UMS Module Location
UMS Module Pin Identification
External Fall Arrest System Components
Cylinder Barrel Support
Capscrew Removal
Cylinder Rod Support
Tapered Bushing Removal
Composite Bearing Installation
Rod Seal Installation
Cylinder Head Seal Installation
Wiper Seal Installation
Installation of Head Seal Kit
Tapered Bushing Installation
Seating the Tapered Bearing
Hydrolock Piston Seal Installation
Piston Seal Kit Installation
Rod Assembly Installation
Spanner Nut Removal
Components Main Boom and Tower Boom
Main Control Valve Pressure Adjustments
Main Valve Components - Sheet 1 of 2
Main Valve Components - Sheet 2 of 2
Valve Component Torque - Sheet 1 of 2
Valve Component Torque - Sheet 2 of 2
Variable Displacement Pump (Rexroth)
Gauge Port Locations
Shaft Seal and Retaining Ring
Plug Locations, Sizes, and Torques
Endcover Inspection
Housing Inspection
Servo Piston Installation
Bearing Or Bushing Inspection
Manual Servo Control Basic Assembly Option
Neutral Lockout Switch Assembly
Gauge Locations
Fault - Logic Troubleshooting
Hydraulic Schematic (Prior to SN 0300137975) - Sheet 1 of 6
Hydraulic Schematic (Prior to SN 0300137975) - Sheet 2 of 6
Hydraulic Schematic (Prior to SN 0300137975) - Sheet 3 of 6
Hydraulic Schematic (Prior to SN 0300137975) - Sheet 4 of 6
Hydraulic Schematic (Prior to SN 0300137975) - Sheet 5 of 6
Hydraulic Schematic (Prior to SN 0300137975) - Sheet 6 of 6
Hand Held Analyzer
ADE Block Diagram
Analyzer Flow Chart, Prior to Version 5.X Software - Sheet 1 of 4
Analyzer Flow Chart, Prior to Version 5.X Software - Sheet 2 of 4
Analyzer Flow Chart, Prior to Version 5.X Software - Sheet 3 of 4
Analyzer Flow Chart, Prior to Version 5.X Software - Sheet 4 of 4
Analyzer Flow Chart, Version 5.X Software - Sheet 1 of 4
Analyzer Flow Chart, Version 5.X Software - Sheet 2 of 4
Analyzer Flow Chart, Version 5.X Software - Sheet 3 of 4
Analyzer Flow Chart, Version 5.X Software - Sheet 4 of 4
Analyzer Flow Chart Version 6.X Software - Sheet 1 of 8
Analyzer Flow Chart Version 6.X Software - Sheet 2 of 8
Analyzer Flow Chart Version 6.X Software - Sheet 3 of 8
Analyzer Flow Chart Version 6.X Software - Sheet 4 of 8
Analyzer Flow Chart Version 6.X Software - Sheet 5 of 8
Analyzer Flow Chart Version 6.X Software - Sheet 6 of 8
Analyzer Flow Chart Version 6.X Software - Sheet 7 of 8
Analyzer Flow Chart Version 6.X Software - Sheet 8 of 8
Ground Control Module Location (Prior to SN 0300139070)
Ground Control Module Location (SN 0300139070 through 0300185827)
Platform Control Module Location (Prior to SN 0300138447)
Platform Control Module Location (SN 0300138447 through 0300185827)
Analyzer Connecting Points
Voltage Measurement (DC)
Current Measurement (DC)
Application to plug/male connector housing
Use of Seal Plugs
Brad-Harrison M12
Phoenix Contact M12
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
Electrical Components Installation (Prior to SN 0300135982) - Sheet 1 of 2
Electrical Components Installation (Prior to SN 0300135982) - Sheet 2 of 2
Electrical Components Installation With UGM - Sheet 1 of 2
Electrical Components Installation With UGM - Sheet 2 of 2
Electrical Schematic - Deutz & Ford Engines without UGM - Sheet 1 of 2
Electrical Schematic - Deutz & Ford Engines without UGM - Sheet 2 of 2
Electrical Schematic - Deutz EMR2 & GM Engines (Prior to SN 0300099884) - Sheet 1 of 6
Electrical Schematic - Deutz EMR2 & GM Engines (Prior to SN 0300099884) - Sheet 2 of 6
Electrical Schematic - Deutz EMR2 & GM Engines (Prior to SN 0300099884) - Sheet 3 of 6
Electrical Schematic - Deutz EMR2 & GM Engines (Prior to SN 0300099884) - Sheet 4 of 6
Electrical Schematic - Deutz EMR2 & GM Engines (Prior to SN 0300099884) - Sheet 5 of 6
Electrical Schematic - Deutz EMR2 & GM Engines (Prior to SN 0300099884) - Sheet 6 of 6
Deutz and GM Engines with UGM - Sheet 1 of 10
Deutz and GM Engines with UGM - Sheet 2 of 10
Deutz and GM Engines with UGM - Sheet 3 of 10
Deutz and GM Engines with UGM - Sheet 4 of 10
Deutz and GM Engines with UGM - Sheet 5 of 10
Deutz and GM Engines with UGM - Sheet 6 of 10
Deutz and GM Engines with UGM - Sheet 7 of 10
Deutz and GM Engines with UGM - Sheet 8 of 10
Deutz and GM Engines with UGM - Sheet 9 of 10
Deutz and GM Engines with UGM - Sheet 10 of 10
GM Engine Schematic (Engine Schematic Only) - Sheet 1 of 2
GM Engine Schematic (Engine Schematic Only) - Sheet 2 of 2
Operating Specifications
Ford LRG-425 Specifications
Deutz F4M2011F Specifications
Deutz D2011L04 Specifications
Caterpillar 3044C/3.4
Tire Specifications
Drive System Specifications
Swing System Specifications
Hydraulic Drive Pump Specifications
Variable Displacement Pump Specifications
Hydraulic Load Sense Pump Specifications
Auxiliary Power Pump Specifications (SN 0300069000 through 0300109066)
Auxiliary Power Pump Specifications (SN 0300109067 through 0300140000)
Auxiliary Power Pump Specifications (SN 0300140001 through 0300185827)
Hydraulic FIlter Specifications
Torque Requirements
Mobilfluid 424 Specs
Mobil DTE 10 Excel 32 Specs
Mobil EAL 224 H Specs
UCon Hydrolube HP-5046 Specs
Cylinder Specifications
Major Component Weights
Pressure Settings
Inspection and Maintenance
Cylinder Drift
Inspection and Preventive Maintenance Schedule
Wheel Torque Chart
Excessive Noise and/or Vibration
System Operating Hot
Won’t Shift or Slow to Start
Displacement Identifiers
Slipper Foot Thickness & End Play
Cylinder Block Measurements
Coupling Port Information Table (9 port) (Prior to SN 0300138447)
ECM Diagnostic Trouble Codes
EPM Diagnostic Trouble Codes
LPF Fuel System Diagnosis
Symptom Diagnosis
DTC to SPN/FMI Cross Reference Chart
Prime Lubricant Characteristics
Air Compressor Troubleshooting
Ramp Current Setting Range
Ramp time Setting
Symbols Used
Gauge and Port Information
Actuator Response Is Sluggish
Low Pump Output Flow
Pressure or Flow Instability
System Pressure Not Reaching Pressure Compensator Setting
High Inlet Vacuum
Analyzer Abbreviations
Machine Configuration Programming Information Prior to Software Version P5.3
Machine Configuration Programming Information Software Version P5.3 to P6.1
Machine Configuration Programming Information Software Version P6.1 to Present
Machine Configuration Programming Information
Machine Configuration Programming Settings
Function Speeds (In Seconds)
Machine Configuration Parameters
Personality Ranges/Defaults
Help Fault Codes, Displayed Faults, and Descriptions - Prior to SN 0300066931
Diagnostic Trouble Code
ADJUSTMENTS - Personality Descriptions
Diagnostic Menu Descriptions

Inside this manual

Real pages from this service manual (582 pages). Open the sample pages (PDF, 625 KB)

Sample pages from the JLG 740AJ Boom Lift Service Manual: Specifications, Troubleshooting, Diagram, Color page, Color page
  • Specifications, page 26: SECTION 1 - SPECIFICATIONS
  • Troubleshooting, page 442: SECTION 5 - BASIC HYDRAULIC INFORMATION AND SCHEMATICS
  • Diagram, page 554: SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS
  • Color page, page 284: SECTION 4 - BOOM & PLATFORM
  • Color page, page 540: SECTION 7 - BASIC ELECTRICAL INFORMATION & SCHEMATICS

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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, 582 pages

Quantity one is the manual described above.

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