JLG Scissor Lift 3369LE 4069LE M3369 M4069 Service & Maintenance Manual 3121122 2025

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JLG Scissor Lift 3369LE 4069LE M3369 M4069 Service & Maintenance Manual 3121122 2025
Size: 14.60 MB
Format: PDF
Language: English
Brand: JLG
Type of Machine: Scissor Lift
Type of Manual: Service & Maintenance Manual, Electrical and Hydraulic Diagrams
Model: JLG 3369LE, 4069LE, M3369, M4069 Scissor Lift
Prior to SN 0200230092
Part Number: 3121122
Publication Date: 2025
Number of Pages: 154 Pages

Contents:
Section A. Introduction - Maintenance Safety Precautions

A.A General​

A.B Hydraulic System Safety​

A.C Maintenance​

Section 1. Specifications

1.1 Specifications​

1.2 Capacities​

1.3 Pressure Settings​

1.4 Component Data​

Battery Charger​

Batteries​

Drive System​

Steer System​

Hydraulic Pump/Electric Motor Assembly​

1.5 Torque Specifications​

1.6 Lubrication​

Lubrication Specifications​

1.7 Cylinder Specifications​

1.8 Major Component Weights​

1.9 Critical Stability Weights​

1.10 Lubrication​

1.11 Serial Number Locations​

1.12 Torque Charts​

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 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​

2.3 Lubrication and Information​

Hydraulic System​

Hydraulic Oil​

Changing Hydraulic Oil​

Lubrication Specifications​

2.4 Cylinder Drift Test​

Platform Drift​

Cylinder Drift​

2.5 Pins and Composite Bearing Repair Guidelines​

2.6 Preventive Maintenance and Inspection Schedule​

Section 3. Chassis & Scissor Arms

3.1 Calibrations​

Elevation Sensor Calibration (Prior to Software V13.6)​

Elevation Sensor Calibration (Software V13.6 and Higher)​

Speed Sensor​

Tilt Sensor Calibration:​

Joystick Calibration (SW V13.5 & Higher and P1.0 & Higher)​

3.2 Tilt Sensor​

Tilt Sensor, JLG P/N 4000006:​

Tilt Sensor, JLG P/N 4000021:​

3.3 Battery Maintenance and Charging​

Battery Maintenance, Quarterly​

Optional On-Board Generator​

Battery Charging (On Board Charger) (MAC)​

Charging Sequence of Remote LED Card​

Battery Charger (Delta-Q)​

Battery Charger Maintenance​

Battery Charger Troubleshooting​

Battery Temperature Sensor​

Removing the Battery Box​

3.4 Generator​

Timing Sequences​

To Connect the JLG Control System Analyzer to the Generator​

Alarms and Fault Flash Codes​

Output Current and Voltage Settings​

Priming the Fuel Line​

3.5 Supplementary Fuse For APU​

Tools And Material​

Procedure​

3.6 Joystick Controller​

Power Controller​

3.7 Towing​

Disengaging for Towing​

Engaging after Towing is Complete​

3.8 Drive Hub​

Disassembly​

Disassembly of Cover Unit (8)​

Disassembly of First Stage Planetary Assembly​

Disassembly of the Second Stage Planet Gears (1)​

3.9 Drive Brake - MICO​

Disassembly​

Assembly​

Bleeding​

3.10 Torque Hub​

Roll Test​

Leak Test (Main Unit)​

Tightening and Torquing Bolts​

Main Disassembly​

Output Carrier Disassembly​

Input Carrier Disassembly​

Hub-Spindle Disassembly​

Cover Disassembly​

Input Carrier Sub-Assembly​

Output Carrier Sub-Assembly​

Hub-Spindle Sub-Assembly​

Cover Sub-Assembly​

Main Assembly​

Section 4. Hydraulics

4.1 Servicing and Maintenance Guidelines​

General​

Safety and Workmanship​

Cleanliness​

Component 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​

Batteries​

Lubrication and Servicing​

4.2 Lubrication Information​

Hydraulic System​

Hydraulic Oil​

Changing Hydraulic Oil​

Lubrication Specifications​

4.3 Cylinders - Theory of Operation​

4.4 Valves - Theory of Operation​

Control Valves​

4.5 Component Functional Description​

Hydraulic Pump​

Manual Descent​

4.6 Wear Pads​

4.7 Motor Controller - Modes of Operation​

Traction Motor (Drive)​

Pump Motor (LIft)​

4.8 Features​

Traction Mode​

4.9 Cylinder Checking Procedures​

Cylinder Without Counterbalance Valves (Steer)​

Cylinders With Single Counterbalance Valve (Lift Cylinder)​

Cylinders with Duel Counterbalance Valves (Oscillating Cylinders)​

4.10 Cylinder Removal and Installation​

Lift Cylinder Removal​

Lift Cylinder Installation​

4.11 Cylinder Repair​

Disassembly​

Cleaning and Inspection​

Assembly​

4.12 Steer Cylinder Removal​

4.13 Oscillation Cylinder Bleeding​

Bleeding Procedure​

Checking Oscillation Cylinders​

Oscillating Axle Lockout Test (If Equipped)​

4.14 Cylinder Assemblies​

4.15 Pressure Setting Procedures​

Main Relief at Pump​

Lift Relief​

Steer Relief​

4.16 Drive Torque Hub​

Disassembly​

Assembly​

4.17 Drive Assist Valve​

Section 5. JLG Control System

5.1 Hand Held Analyzer​

To Connect the Hand Held Analyzer:​

Using the Analyzer:​

Changing the Access Level of the Hand Held Analyzer:​

Adjusting Parameters Using the Hand Held Analyzer​

Machine Setup​

5.2 PC Boards​

5.3 Flash Codes/DTC’s and Descriptions​

5.4 Ground Control Circuit Board​

Software Version 13.6​

Software Version P1.0​

Section 6. General Electrical Information & Schematics

6.1 General​

6.2 Multimeter Basics​

Grounding​

Backprobing​

Min/Max​

Polarity​

Scale​

Continuity Measurement Over Long Distances​

Requirements:​

Procedure​

6.3 Applying Silicone Dielectric Compound To Amp Connectors​

Assembly​

Disassembly​

Wedge Lock​

Service - Voltage Reading​

6.4 Working With Deutsch Connectors​

DT/DTP Series Assembly​

DT/DTP Series Disassembly​

HD30/HDP20 Series Assembly​

HD30/HDP20 Series Disassembly​