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FUEL SYSTEM
15
REMOVAL & REFITMENT OF PRESSURE
REGULATOR (on vehicle):
REMOVAL
NOTE:
Park the vehicle with brakes ON and duel
selector switch is kept in CNG mode.
Manually turn of the tank valve and connect
the TML tester tool and start the service
“Empty CNG lines”
Crank the engine and run in idle condition
until engine stop at its own.
Re crank the engine it should not start (tank
pressure should be 0 bar)
WARNING :
Do not turn OFF Cylinder Valves , in vehicle
running in CNG mode. This may wrongly detect
the leakage error.
Disconnect the battery negative terminal.
Disconnect the electrical connections of solenoid
valve and high pressure sensor.
Disconnect the following connections from
pressure regulator.
A) Gas supply connection from cylinder.
B) LP hose from regulator to LP filter
C) Pressure Relief Valve (PRV) connection.
Now carefully remove the pressure regulator
mounting fasteners and take-out the unit from
the vehicle.
FITMENT OF PRESSURE REGULATOR (on
vehicle):
For fitment procedure, follow the reverse
procedure of “Removal”.
Conduct leak detection test after the fitment of
pressure regulator on vehicle.
NOTE:
Follow the guidelines for NPT threading for
assembly of NPT threading.