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 4 - BOOM & PLATFORM
4-20 – JLG Lift – 3121139
4.3 BOOM ROPE TORQUING PROCEDURES
Torque Procedures
1. Position boom in fully down and fully retracted posi-
tion.
2. Clamp both threaded ends of wire rope to prevent
rotation.
NOTE: Do not clamp on threads.
3. Install adjusting nuts (or remove nylon collar lock-
nuts if re-adjusting) to both retract and extend wire
ropes.
4. Torque retract adjusting nuts (platform end) to 15 ft.
lbs. (20 Nm) alternating between the two wire ropes
and keeping approximately the same amount of
thread beyond the adjusting nut.
NOTE: Do not allow wire rope to rotate. This may damage
the wire rope.
5. Repeat the torque procedure in step #4 to the
extend wire ropes (turntable end).
6. Extend the boom 2 - 3 feet using the telescope func-
tion. Repeat step #4.
7. Retract the boom 1 - 2 feet using the telescope func-
tion. Do not bottom out telescope cylinder. Repeat
step #5.
8. Extend the boom approximately 2 - 3 feet again and
check torque on the retract wire ropes.
9. Retract the boom without bottoming out telescope
cylinder and check torque on the extend wire ropes.
NOTE: Step #8 and #9 may need to be repeated to equalize
the torque on all 4 wire ropes.
10. After all wire ropes have been properly torqued,
install nylon collar locknuts. Remove all clamping
devices and install all covers and guards. Check the
boom for proper function.
Figure 4-12. Clamping Wire Ropes