JLG Scissor Lift 330LRT 430LRT Service & Maintenance Manual 3121758 2025

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JLG Scissor Lift 330LRT 430LRT Service & Maintenance Manual 3121758 2025
Size: 35.72 MB
Format: PDF
Language: English
Brand: JLG
Type of Machine: Scissor Lift
Type of Manual: Service & Maintenance Manual, Electrical and Hydraulic Diagrams
Model: JLG 330LRT 430LRT Scissor Lift
Serial Number: 0200000100-0200269765
Part Number: 3121758
Publication Date: 2025
Number of Pages: 258 Pages

Contents:
Section A. Introduction - Maintenance Safety Precautions

A General​

B Hydraulic System Safety​

C Maintenance​

Section 1. Specifications

1.1 Specifications​

Operating Specifications​

Generator Specifications (If Equipped)​

Dimensional Data​

Fluid Capacities​

Drive Information​

Steering Information​

Tires​

Critical Stability Weights​

1.2 Serial Number Location​

1.3 Lubrication​

Hydraulic Oil Specifications​

1.4 Hydraulic Pressure Settings​

1.5 Hydraulic Cylinder Specifications​

1.6 Engine Specifications​

1.7 Elevation/Tilt Limit Settings​

Section 2. General

2.1 Machine Preparation, Inspection, and Maintenance​

General​

Preparation, Inspection, and Maintenance​

Pre-Start Inspection​

Pre-Delivery Inspection and Frequent Inspection​

Annual Machine Inspection​

Preventative Maintenance​

2.2 Preventive Maintenance and Inspection Schedule​

Maintenance and Inspection Schedule Codes​

Footnotes​

2.3 Service And Guidelines​

General​

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 Servicing​

2.4 Lubrication And Information​

Hydraulic System​

Hydraulic Oil​

Changing Hydraulic Oil​

Lubrication Specifications​

2.5 Service Maintenance Components​

Setting Scissor Arm Safety Prop​

General Maintenance Tips​

Fuel Tank​

Drive Hub​

Scissor Arms - Sliding Wear Pads​

Hydraulic Oil Tank​

Hydraulic Charge Filter​

Oil Change with Filter​

Fuel/Water Separator Filter (Diesel) - Kubota​

Fuel Strainer (Diesel) - Kubota​

Fuel Filter (Gas) - Kubota​

Air Filter​

Engine Coolant​

2.6 Cylinder Drift Test​

Platform Drift​

Cylinder Drift​

2.7 Pins and Composite Bearing Repair Guidelines​

Section 3. Chassis, Platform, & Scissor Arms

3.1 Operating Characteristics​

Leveling Jacks (If Equipped)​

Generator​

Lift​

Drive​

3.2 Tires, Wheels & Drive Assembly​

Tire Damage​

Tire Replacement​

Wheel Replacement​

Wheel Installation​

Drive Assembly​

3.3 Drive Hub (Fairfield)​

Roll and Leak Testing​

Tightening and Torquing Bolts​

Oil Information​

Main Disassembly for Drive Hub​

Hub-Spindle Disassembly​

Cover Disassembly​

Carrier Disassembly​

Carrier Assembly​

Cover Sub-Assembly​

Hub-Spindle Sub-Assembly​

Main Assembly​

Tool List​

Re-Aligning Torque Hub Input Coupling​

3.4 Drive Motor (Sauer)​

Description​

Shaft Seal Replacement​

Loop Flushing Valve​

Troubleshooting​

Disassembly​

Inspection​

Assembly​

Initial Start-Up Procedures​

3.5 Axle Installation​

Removal​

Assembly​

3.6 Steer Installation (All Markets Except for CE and JAPAN)​

Steer Cylinder Removal​

Spindle Removal​

Assembly​

3.7 Steer Installation (CE and Japan Markets)​

Steer Cylinder Removal​

Spindle Removal​

Assembly​

Axle Lockout Cylinder​

3.8 Leveling Jacks (If Equipped)​

Cylinder Removal​

Assembly Removal​

3.9 Platform​

Platform Control Station​

Joystick Controller​

3.10 Scissor Arms​

Lift Cylinder Removal​

Scissor Arms Removal​

Scissor Arm Assembly Removal​

3.11 Side Compartment Covers​

Cover Removal​

Cover Installation​

3.12 Ground Control Station​

Control Station Removal​

Ground Control Station Components​

Options Control Module​

3.13 Battery​

3.14 Fuel Tank​

3.15 Hydraulic Tank​

3.16 Kubota Engine​

Engine Tray - Swing Out​

Engine Removal​

Dual Fuel/LPG System​

Changing From Gasoline to LP Gas​

Changing From LP Gas to Gasoline​

Using Liquid Petroleum (LP) Gas​

Propane Fuel System Pressure Relief​

Propane Fuel System Leak Test​

Generator (If Equipped)​

Exhaust System​

Dual Fuel - Gas/Lpg​

Diesel​

Air Cleaner System​

Radiator​

Engine Electrical Component Locations​

Hydraulic Pump Installation​

Pump Coupling Assembly​

Engine Speed Sensor (Kubota Diesel Engine)​

Throttle Actuator Adjustment​

Air Gap Setting​

Diagnosis of Actuator​

Adjustment of The Actuator​

Adjustment Verification of Actuator​

Section 4. Basic Hydraulic Information & Schematics

4.1 Cylinders - Theory of Operation​

4.2 Valves - Theory of Operation​

Solenoid Control Valves (Bang-Bang)​

Relief Valves​

Crossover Relief Valves​

4.3 Cylinder Checking Procedure​

Cylinders Without Counterbalance Valves​

Cylinders With Single Counterbalance Valve​

4.4 Oscillating Axle - Lockout Cylinder Test (If Equipped)​

Left Side Wheel Test​

Right Side Wheel Test​

4.5 Drive Pump Pre-fill Procedure​

Pre-Fill of the Drive Pump Housing Without HOC​

Pre-Fill of the Drive Pump Housing With HOC​

Priming the Gear Pump​

4.6 Drive Pump Start-up Procedure​

4.7 Hydraulic Component Start-Up Procedures & Recommendations​

4.8 Hydraulic Valves​

Main Hydraulic Valve​

Main Hydraulic Valve (CE Only)​

Flow Divider Valve​

Leveling Jack Directional Valve (If Equipped)​

Leveling Jack Valves (If Equipped)​

Leveling Jack Manifold Valve (SN 0200267917 to Present) (If Equipped)​

Pressure Relief Valve - Setting Procedures​

4.9 Gear Pump​

4.10 Axial HI 45 Pump​

General Repair Instructions​

Start-Up Procedure​

Removing the Pump​

Electric Control Module​

Control Solenoids​

Shaft Seal, Roller Bearing & Shaft Replacement​

Charge Pump​

Charge Check/HPRV​

Charge Pressure Relief Valve​

Pressure Limiter Valve Replacement​

4.11 Charge Pump Filter​

4.12 Cylinder Repair​

Disassembly​

Cleaning and Inspection​

Assembly​

4.13 Cylinder Assemblies​

Oscillating Axle Cylinder Bleeding Procedure​

4.14 Hydraulic Schematics​

Section 5. JLG Control System

5.1 Analyzer​

Connecting the Analyzer​

Using the Analyzer​

Changing the Access Level​

Adjusting Parameters​

Machine Setup​

System Fault/DTC Indication​

5.2 Analyzer Menu Flow Chart​

Prior to SN 0200267916​

SN 0200267917 to Present​

5.3 Diagnostic Troubleshooting codes (DTC’s) and Flash Codes Description​

5.4 Chassis Tilt Sensor Installation​

5.5 Location of Additional Sensors​

5.6 Calibration Procedures (Prior to SN 0200267916)​

Rotary Angle (Elevation) Sensor Calibration​

Arm Stack Tilt Sensor Calibration​

Oscillating Axle Tilt Sensor​

Chassis Tilt Sensor Calibration​

Drive Minimum Calibration​

Reset Personality Calibration​

5.7 Calibration Procedures (SN 0200267917 to Present)​

Chassis Tilt Sensor​

Oscillating Axle Tilt Sensor​

Set Stow Elevation​

Load Sensing​

Joystick​

5.8 Service Mode Procedures​

ECM Override (Dual Fuel Only)​

Elevation Service​

EEPROM Reset​

Allow Drive​

Allow Leveling Jack Retract​

5.9 Machine Configuration and Programming Settings (Prior to SN 0200267916)​

5.10 Machine Configuration and Programming Settings (SN 0200267917 to Present)​

Section 6. LSS Setup/Calibration/Service

6.1 Connecting the JLG Control System Analyzer​

6.2 Help Menu & Fault Codes​

6.3 Diagnostic Menu​

6.4 Personalities​

6.5 Machine Setup Menu​

6.6 Calibration Menu​

6.7 Service​

Description​

6.8 Calibration​

Procedure​

Testing & Evaluation​

6.9 Troubleshooting​

Section 7. General Electrical Information & Schematics

7.1 General​

7.2 Multimeter Basics​

Grounding​

Backprobing​

Min/Max​

Polarity​

Scale​

Voltage Measurement​

Resistance Measurement​

Continuity Measurement​

Current Measurement​

Continuity Measurement Over Long Distances​

Requirements:​

Procedure​

7.3 Applying Silicone Dielectric Compound to Electrical Connections​

Installation of Dielectric Grease​

Deutsch HD, DT, DTM, DRC Series​

AMP Seal​

AMP Mate-N-Lok​

DIN Connectors​

Exclusions​

7.4 AMP Connector​

Assembly​

Disassembly​

Wedge Lock​

Service - Voltage Reading​

7.5 Working with Deutsch Connectors​

DT/DTP Series Assembly​

DT/DTP Series Disassembly​

HD30/HDP20 Series Assembly​

HD30/HDP20 Series Disassembly​

7.6 Switches​

Basic Check​

Limit Switches​

Automatic Switches​

Switch Wiring - Low Side, High Side​

7.7 Electrical Schematics​

(Prior to SN 0200267916)​

(SN 0200267917 to Present)​