Fuel Filter Maintenance; Fuel Pump - MCS XL 9ERM Manuel D'utilisation Et De Maintenance

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Fuel filter
B.
A.
C.
D.
Figure 4 - Fuel line filter.
A. Series of gaskets, B. Fuel output infeed body, C. Filtering element (Cartridge), D. Plastic cup.
This is a cup filter containing a filtering element and a series of gaskets, all elements that can easily be
replaced. This element is very important because it keeps tiny particles from reaching the nozzle, and
thereby clogging it or even ruining it definitively.

Fuel filter maintenance

If the heater works in abrupt movements, one of the possible causes may be the filter. To clean the filter,
unscrew the plastic cup and clean it using clean fuel and compressed air. The filtering element must be
removed and cleaned using compressed air.

Fuel pump

The fuel system may be equipped with two different pumps depending on the type of machine being
analysed. Both pumps can work either with diesel oil or kerosene. When the motor starts turning, the pump
starts working, beginning to suction fuel from the intake pipe. As soon as the fuels enters the pump it is
pressurised and a portion, managed by one or two solenoid valves (respectively single stage and double
stage), is forcibly channelled to the nozzle through the supply pipe and the excess portion is re-channelled
towards the tank through the return pipe (double pipe mode).
Pump for XL 9ERM
Figure 5 - Single solenoid valve pump.
A. Filtering element, B. Solenoid valve, C. Seat for the filtering element, D. Manometer attachment, E. Pump
pressure adjustment screw.
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