Impco HHI, Руководство по обслуживанию

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466
Remove the fuel tank cap and relieve the fuel
system pressure before servicing the fuel
system to reduce the risk of personal injury.
After you relieve the fuel system pressure, a
small amount of fuel may still be released
when servicing the fuel lines, the fuel injec-
tion pump, or the connections. Always cover
the fuel system components with a shop to-
wel before disconnecting to absorb any fuel
that may leak out. Dispose of towel in an ap-
proved container when the procedure is
completed. Follow any additional user rec-
ommendations in the manufacturer
instructions for the fuel pressure gauge in
use.
Do not drain fuel into an open container.
Never store the fuel in an open container due
to the possibility of a fire and/or explosion.
4. Clean any spillage of gas with a shop towel
and dispose of properly.
5. Reconnect negative battery cable.
6. Turn ON the ignition with the engine OFF for 2
seconds. Inspect for leaks. Turn ON ignition
for 10 seconds and inspect for leaks.
7. Start and run fuel pressure test.
XV. LPG FUEL CONTROL SYSTEM CHECK
1. The fuel system can be thoroughly diagnosed
by use of the DST tool. See section
DIAGNOSTIC SCAN TOOL .
XVI. LPG FUEL SYSTEM LEAK TEST
1. Use a commercially available liquid leak detector
or an electronic leak detector and follow the
manufacturer’s instructions.
IMPORTANT
When using both methods, use the electronic leak
detector
first to avoid contamination by the liquid
leak detector
XVII. ELECTRONIC PRESSURE REGULATOR
(EPR)
REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Relieve the LPG fuel system pressure. Refer to
III. LPG Fuel System Pressure Relief.
3. Disconnect the LPG fuel inlet line from the Shut-
Off Valve fitting.
4. Disconnect the EPR electrical connector.
5. Disconnect the Shut-Off Valve electrical connec-
tor.
6. Clamp both coolant lines near the EPR fittings.
7. Remove the retaining pins from the water inlet
and outlet fittings, fuel hose and Temperature
Sensor.
8. Remove coolant inlet and outlet Port Fittings and
fuel hose.
9. Remove the three nuts securing the Vibration
mounts to the EPR/ECM mounting bracket.
10. Remove Shutoff valve and fitting and Tempera-
ture Sensor.
11. Remove the three vibration mounts from the
EPR.
INSTALLATION PROCEDURE
1. Apply Loctite 567 (or equivalent high-temp
thread locker/sealer) to the threads of the Shut-
Off valve 90° fitting. Install the Shut-Off valve fit-
ting to the EPR and turn until
finger tight plus 1
to 2 turns, ensuring the Shut-Off Valve is in the
correct clock position.
Do not use Te flon tape on any fuel fitting. Use
a liquid pipe thread sealant when installing
threaded
fittings.
2. Connect the EPR electrical connector.
3. Install the fuel inlet line.
Torque to 20 ft. lbs.
(27 Nm ) .
4. Connect the Shut-Off Valve electrical connector.
5. Lubricate the O-rings on each of the port
fittings
and Temperature Sensor with petroleum jelly or
Vaseline.