A boom that creeps out of sync or a Sevcon controller flashing codes at you will stall a rental fleet fast; JLG wrote publication 3120743, a 104-page service manual for six electric aerial platform variants in the 30E through 45E family, to settle exactly those problems. Anyone hunting for a JLG 35E service manual PDF gets the same factory book here, N-series machines included. Wiring diagrams trace the traction and pump motor circuits, hydraulic schematics map every holding valve, and troubleshooting tables for platform, boom, turntable, and chassis fill the last quarter of the book. Confirm the charger is pushing 48 VDC at 23 amps before you condemn a battery pack, then torque the wheel bolts to 90 ft. lb. (122 Nm). A guessed pressure setting can tip a platform; a printed one can't. Bookmarked and text-indexed, this PDF drops you on the swing bearing procedure in two clicks.
What's Inside This JLG 30E-45E Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction - Maintenance Safety Precautions | 3-8 | General, Hydraulic System Safety, Maintenance |
| Specifications | 9-24 | Capacities, Component Data, Performance Data, Torque Specifications, Lubrication, Pressure Settings, Major Component Weights, Critical Stability Weights |
| General Servicing and Maintenance Guidelines | 25-27 | Safety and Workmanship, Cleanliness, Component Removal and Installation, Hydraulic System Maintenance, Battery Maintenance |
| Cylinder and Valve Theory of Operation | 28 | Double Acting Cylinders, Control Valves, Steer Valve, Holding Valves |
| Motor Controller Operation and Diagnostics | 29-34 | Traction Motor Drive, Pump Motor Drive, Diagnostic Flash Codes, Sevcon Controller Troubleshooting |
| Boom Maintenance and Wear Pads | 35-40 | Wear Pad Adjustment, Boom Removal, Telescope Cylinder Removal, Boom Section Disassembly |
| Cylinder Checking, Repair, and Installation | 41-55 | Cylinder Checking Procedures, Cylinder Repair, Piston Seal Installation, Lift Cylinder Removal, Telescope Cylinder Installation |
| Swing Bearing and Drive System Procedures | 56-71 | Tilt Indicator Switch Leveling, Pressure Setting Procedures, Swing Bearing Replacement, Drive Torque Hub Disassembly, Drive Brake Assembly |
| Preventive Maintenance and Inspection Schedule | 72-76 | Mid and Lower Lift Cylinder Bleeding, Boom Synchronizing Procedure, Free Wheeling Procedure, Footswitch Adjustment, Preventive Maintenance Schedule |
| Troubleshooting | 77-104 | Troubleshooting Information, Platform Assembly Troubleshooting, Boom Assembly Troubleshooting, Turntable Assembly Troubleshooting, Chassis Assembly Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel Bolts | 90 ft. lb. (122 Nm) | p. 11 |
| Battery Charger Input | 110 VAC, 60 HZ | p. 9 |
| Battery Charger Output | 48 VDC (23 Amps.) | p. 9 |
| Drive Motor Power | 4.1 H.P. | p. 9 |
| Drive Motor Speed | 1880 rpm | p. 9 |
| Thermal Cutback Temperature | 80 degrees C (176 degrees F) | p. 31 |
| Low Battery Voltage Fault | below 13 volts | p. 31 |
| Upper Lift Cylinder Nut Torque (Wet) | 200 ft. lbs. (271 Nm) | p. 51 |
| Slave Cylinder (To 12/94) Nut Torque (Wet) | 50 ft. lbs. (68 Nm) | p. 51 |
| Slave Cylinder (From 12/94 to present) Nut Torque (Wet) | 80 ft. lbs. (109 Nm) | p. 51 |
| Mid Lift Cylinder Nut Torque (Wet) | 200 ft. lbs. (271 Nm) | p. 51 |
| Hydraulic Oil Tank Capacity | 4.0 gallons | p. 9 |
