SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3-78 – JLG Lift – 3121642
Propane Fuel Filter Replacement
REMOVAL:
1. Relieve the propane fuel system pressure. Refer to Pro-
pane Fuel System Pressure Relief.
2. Disconnect the negative battery cable.
3. Slowly loosen the filter housing retaining bolt and
remove it.
4. Pull the filter housing from the Electric lock off assembly.
5. Locate Filter magnet and remove it.
6. Remove the filter from the housing.
7. Remove and discard the housing seal.
8. Remove and discard the retaining bolt seal.
9. Remove and discard the mounting plate to lock off O-
ring seal.
INSTALLATION:
BE SURE TO REINSTALL THE FILTER MAGNET INTO THE HOUSING BEFORE
INSTALLING NEW SEAL.
1. Install the mounting plate to lock off O-ring seal.
2. Install the retaining bolt seal.
3. Install the housing seal.
4. Drop the magnet into the bottom of the filter housing.
5. Install the filter into the housing.
6. Install the retaining bolt into the filter housing.
7. Install the filter up to the bottom of the electric lock off.
8. Tighten the filter retaining bolt to 106 in.lbs. (12 Nm).
9. Open manual shut-off valve. Start the vehicle and leak
check the propane fuel system at each serviced fitting.
Refer to Propane Fuel System Leak Test.
Electronic Pressure Regulator (EPR) Assembly
Replacement
The EPR assembly is made up of two separate components.
The Voice Coil Section is not serviceable and can only be
replaced as an assembly. The pressure regulator section is ser-
viceable and will be detailed in this section.
REMOVAL:
1. Relieve the propane fuel system pressure. Refer to Pro-
pane Fuel System Pressure Relief.
2. Disconnect the negative battery cable.
3. Slowly remove the fuel inlet fitting at the Electric Lock
Off.
NOTE: Residual vapor pressure will be present in the fuel system.
4. Disconnect the electrical connector from the Electric
Lock off.
5. Remove the Electric Lock Off from the regulator.
1. Electric Lock Off Solenoid
2. Mounting Plate
3. Housing Seal
4. Filter Magnet
5. Filter Housing
6. Seal
7. Electrical Connector
8. Fuel Outlet
9. O-ring
10. Filter
11. Fuel Inlet
12. Retaining Bolt
Figure 3-88. Filter Lock Assembly
1. Pressure Regulator Sec-
tion
2. Fuel Inlet
3. Coolant Passage
4. Primary Test Port
5. Secondary Test
Port
6. Voice Coil Section
Figure 3-89. EPR Assembly
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