Service Manual Owner's manual
Table Of Contents
- Section 1. Specifications
- Section 2. General
- Section 3. Chassis & Turntable
- 3.1 Tires & Wheels
- 3.2 Wheel Drive Assembly, 2WD
- 3.3 Drive Motor - 2WD (Prior to S/N 83331)
- 3.4 Drive Motor (S/N 83331 to Present)
- 3.5 Torque Hub
- 3.6 Wheel Drive Assembly, 4WD
- 3.7 Torque Hub (4WD Machines W/ Integral Brake)
- Roll, Leak and Brake Testing
- Tightening and Torquing Bolts
- Main Disassembly
- Input Carrier Disassembly
- Output Carrier Disassembly
- Housing-Spindle Disassembly
- Spindle-Brake Disassembly
- Input Carrier Sub-Assembly
- Output Carrier Sub-Assembly
- Spindle-Brake Sub-Assembly
- Housing-Spindle Sub-Assembly
- DW2B Integral Brake Check
- Main Assembly
- 3.8 Drive Brake, 2WD - Mico (Prior to S/N 83331)
- 3.9 Re-Aligning torque hub input coupling
- 3.10 Oscillating Axle Bleeding Procedure and Lockout Test
- 3.11 Swing Drive Hub
- 3.12 Swing Brake - Mico (Prior to S/N 66417)
- 3.13 Swing Motor (Prior to S/N 66417)
- 3.14 Swing Motor (S/N 66417 to Present)
- 3.15 Procedure For Setting Gear Backlash
- 3.16 Swing Bearing
- 3.17 Rotary Coupling
- 3.18 Generator
- 3.19 Ford EFI Engine
- 3.20 Deutz EMR 2 (S/N 85332 to Present)
- 3.21 GM Engine General Maintenance
- 3.22 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 Filter
- Fuel Injector Rail
- Fuel Injector
- 3.23 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 Replacement
- 3.24 GM Engine LPG Fuel System Diagnosis
- Section 4. Boom & Platform
- Section 5. Hydraulics
- Section 6. JLG Control System
- Section 7. Basic Electrical information & schematics
SECTION 3 - CHASSIS & TURNTABLE
3-34 – JLG Lift – 3121139
3.6 WHEEL DRIVE ASSEMBLY, 4WD
Removal and Disassembly
NOTE: The drive motor can be removed through the axle
flange as part of the wheel drive assembly or they
can be removed separately through the bottom of
the frame while leaving the torque hub bolted to the
axle.
1. Use a jack to lift the frame enough so the tire and
wheel assembly is off of the ground. Place blocking
strong enough to support the weight of the machine
under the frame and remove the jack.
NOTE: The pneumatic tire & wheel assembly weighs
approximately 269 lbs. (122 kg). The foam-filled tire
& wheel assembly weighs approximately 544 lbs.
(247.25 kg).
2. Remove the tire and wheel assembly.
3. Through the access holes in the axle, tag and dis-
connect the hydraulic lines running to the drive
motor. Cap or plug all openings to ensure no dirt
enters the hydraulic system.
NOTE: The torque hub and drive motor assembly weighs
approximately 270 lbs. (122 kg).
4. Use a supporting device capable of handling the
weight of the torque hub and drive motor and unbolt
the torque hub from the frame. Remove the entire
assembly from the machine.
5. Remove the bolts and washers that secure the drive
motor to the torque hub and remove the drive motor.
Remove and discard the o-ring between the drive
motor and torque hub.
Assembly and Installation
1. Install a new o-ring between the drive motor and
torque hub. Install the bolts and washers to secure
them together and torque to 110 ft. lbs. (149 Nm).
2. Place the torque hub flange against the mounting
flange on the axle and fasten it in place with the bolts
and washers. Torque the bolts to 220 ft. lbs. (298
Nm).
3. Install the tire and wheel assembly.
Figure 3-27. Torque Hub Installation - 4WD