Page 233 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

34 Clean the casing and all the components removed from the CNG reducer unit
35 Inspect the diaphragm condition, valve actuation, diaphragm actuation. If found faulty replace with new
components.
36 Reassemble all the removed components.
37 Refit the CNG reducer unit on vehicle.
38 Reconnect the electrical connections for solenoid and gauge sensor unit.

39 Reconnect the gas pipe lines and coolant lines.
40 Remove clean and reconnect venturiunit.
41 Open the gas valve in the cylinder.
42 Check for gas leaks.

43 Check the pressure gauge showing the gas pressure when cylinder shut off valve is open. If the pressure
gauge found faulty replace with new one.
44 Check the gas level indicator display on change over switch.
45 Check the electrical connection of display switch and gauge sensor unit.

46 Replace the gauge sensor unit/switch if found faulty.
47 Check the emulator, timing advancer, stepper motor electrical connections. If necessary replace the
components.

48 Start the engine and change into the CNG gas mode.
49 Adjust the idle speed by adjusting idle speed adjuster on the CNG reducer unit as per the manufactures
recommendation.
50 Accelerate the engine and adjust the peak speed by peak speed adjuster.

51 Check the emission using 5.gas exhaust analyser.
52 Check the LAMDA system controlling the emissions.

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CITS : Automotive - Mechanic Diesel - Exercise 14.2