Replacing Water Separator And Fuel Filter - IHI IC75-2 Operation Manual

Replacing Water Separator and Fuel Filter

Replace the water separator and fuel filter simultaneously.
1. Clean the periphery of the filter head (3).
2. Disconnect the wire harness from the water separator
(1).
3. Loosen the water separator (1) and the filter cartridge
of the fuel filter (4) with the filter wrench and detach
them.
4. Pour fuel into the new water separator cartridge.
Do not pour fuel into the fuel filter cartridge.
Instead, prime the fuel system using a priming pump.
5. Apply fuel thinly to the gasket surfaces of both filter
cartridges.
6. Screw the filter cartridge until the gasket is brought into contact with the seal surface of the
filter head. Tighten it with the filter wrench.
7. Connect the wire harness of the water separator.
The Cummins fuel system checks if a proper in-fuel water sensor is used or not. If the in-fuel
water sensor in use is not appropriate or disconnected, the engine alarm lamp goes on.
Priming method
1. Turn the engine key switch to the ON position to activate the priming pump for 30 seconds.
2. Turn off the engine key switch once. Then, turn it on again to activate the priming pump again.
3. Repeat this operation and activate the priming pump by three or four cycles for 30 seconds
each before starting the engine.
4. Start the engine at low revolution.
5. Increase the engine revolution slowly.
Do not open the high-pressure engine fuel system while the engine is running.
Otherwise, high-pressure fuel spouts out, resulting in serious injury or death.
IC75-2 ENG
MAINTENANCE
4-29
Wire harness