JLG 660SJ Service Manual - Manual (Page 155)

SECTION 3 - CHASSIS & TURNTABLE
3121202 – JLG Lift – 3-105
5. Remove the Electric Lock Off from the regulator.
6. Remove the lock pin from the vapor fitting on the
regulator housing and remove the fitting and hose
and retain the pin.
7. Remove the lock pin from the pressure sensor on
the regulator housing and remove the Sensor and
retain the pin.
8. Using a clamp pliers pinch off the hoses on the cool-
ant lines to the regulator
9. Remove the lock pin from both the water fittings on
the regulator housing and remove the fittings and
hoses and retain the pin
10. Disconnect the EPR electrical connector
11. Remove the (3) three nuts from the EPR isolators
and the EPR mounting bracket
12. Remove the EPR from the bracket
13. Remove the (3) three mounting isolators
INSTALLATION
DO NOT USE TEFLON TAPE ON ANY FUEL FITTING. USE A LIQUID
PIPE THREAD SEALANT WHEN INSTALLING FITTINGS.
CHECK ALL THE O-RINGS ON THE VAPOR AND WATER FITTINGS
FOR ANY DAMAGE REPLACE IF NECESSARY.
LUBE ALL THE O-RINGS WITH AN O-RING LUBE BEFORE
INSTALLING.
1. Install the three (3) rubber isolators to the bottom of
the EPR
2. Install the EPR assembly to the bracket and tighten
the retaining nuts.
NOTE: Do not over tighten the isolators and cause a separa-
tion of the isolators.
3. Install the fuel temperature sensor into the regulator
opening and lock in place with the locking pin, con-
nect the electrical connector.
4. Insert the fuel vapor line and fitting into the regulator
port and lock in place with the locking pin.
5. Install both the water hoses and fittings into the reg-
ulator and lock in place with the locking pin remove
the clamp pliers from the hoses.
6. Install the electric lock off into the regulator inlet and
tighten into proper location, connect the electrical
connector.
7. Connect the fuel supply line and tighten until fully
seated.
8.Connect the EPR electrical connector.
9.Open the manual valve.
10.Start the vehicle and leak check the propane fuel sys-
tem at each serviced fitting Refer to Propane Fuel
System Leak Test.
PRESSURE REGULATOR SECTION REMOVAL
1. Remove the EPR refer to EPR Removal Procedure.
2. Remove the six (6) regulator to voice coil screws
using the special tool and separate the regulator
from the actuator.
DO NOT REMOVE THE SECONDARY DIAPHRAGM RETAINING
PLATE AND DIAPHRAGM THIS WILL VOID THE WARRANTY OF
THE ACTUATOR SECTION.
PRESSURE REGULATOR SECTION
INSTALLATION
1. Install the regulator to the actuator section using the
six (6) retaining screws and tighten 70 in lbs (8 Nm).
2. Install the EPR refer to EPR Installation.
Figure 3-86. Pressure Regulator Section