404 / 654
FUEL SYSTEM
13
D. PRESSURE GAUGE:
Function:
The function of pressure gauge is to indicate the
pressure in high pressure system. It is very useful to
check the pressure in CNG Cylinder before starting
the repair work on CNG system. The pressure gauge
is coupled to T-connector by a Special fitting.
Mounting Location:
It is mounted in the front bonnet, directly connected
to high pressure line.
REMOVAL & REFITMENT OF PRESSURE GAUGE
(on vehicle):
WARNING :
Do not turn OFF Cylinder Valves, in vehicle
running in CNG mode. This may wrongly detect
the leakage error
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)
Disconnect battery negative cable.
Using a suitable tool / spanner carefully remove
the pressure gauge.
FITMENT OF PRESSURE GAUGE (on vehicle):
For fitment procedure, follow the reverse
procedure of “Removal”.
Conduct leak detection test after the fitment of
pressure gauge on vehicle.
NOTE:
Follow the guidelines for NPT threading for
assembly..