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
3121139 – JLG Lift – 3-157
13 1. Turn OFF the ignition.
2. Disconnect the LPL connector.
3. Install a test light between the pins of the LPL connector.
4. Crank the engine. The test light should illuminate.
Does the test light illuminate?
- - Go to Step 14 Go to Step 16
14 Using a DVOM, check the resistance of the low pressure lock-off (LPL).
Is the resistance within the specified range?
12W - 16W Go to Step 15 Go to Step 23
15 1. Turn the ignition OFF.
2. Close the manual shut-off valve on the LPG tank.
CAUTION: When disconnecting LPG fuel lines, liquid LPG may be present. Per-
form this step in a well ventilated area.
3. Loosen the fuel inlet hose fitting at the inlet of the LPL.
Was fuel present when the fitting was loosened?
- - Go to Step 23 Go to Step 17
16 1. Turn OFF the ignition.
2. Connect the test light to chassis ground and probe pin A of the LPL connector.
3. Crank the engine. The test light should illuminate.
Does the test light illuminate?
- - Go to Step 20 Go to Step 21
17 1. Remove the LPG fuel filter / LPL.
2. Remove the filter from the LPL.
3. Empty the contents of the inlet side of the LPG fuel filter onto a clean surface.
4. Inspect the contents of the LPG fuel filter for an excessive amount of foreign
material or water. If necessary, locate and repair the source of contamination.
5. Verify the LPG fuel filter is not restricted or plugged.
Was a problem found?
- - Go to Step 19 Go to Step 18
18 The fuel supply system or hoses are plugged or restricted, locate and repair the
problem.
Is the action complete?
- - Go to Step 26 - -
19 Replace the fuel filter. Refer to Fuel Filter Replacement.
Is the action complete?
- - Go to Step 26 - -
20 Repair the open in the lock-off ground circuit.
Is the action complete?
- - Go to Step 26 - -
21 Repair the open in the lock-off power circuit.
Is the action complete?
- - Go to Step 26 - -
22 Replace the low pressure regulator (LPR). Refer to Low Pressure Regulator
Replacement.
Is the action complete?
- - Go to Step 26 - -
23 Replace the lock-off. Refer to Lock-off Replacement.
Is the action complete?
- - Go to Step 26 - -
24 Replace the mixer assembly. Refer to Fuel Mixer Replacement.
Is the action complete?
- - Go to Step 26 - -
Table 3-12. LPF Fuel System Diagnosis
STEP ACTION VALUE(S) YES NO