ENGINE 78 Components : a) Fuel Pre-Filter Cum Sedimentor : The pre-filter cum sedimentor is a part of the filtration system. It is fitted in the fuel feed system to filter the water present in the fuel. It can store water up to 120cc. The sensor fitted in the sedimentor gets triggered once the water level approaches its maximum limit. This trigger is displayed as a warning in the instrument panel. For more details on the sensor refer EMS Section in this group. For removal and re-fitment procedure refer Engine On-vehicle repairs in this section. Water in Fuel Indicator : b) Fuel Filter : The Fuel filter is fitted as a second filtering step in the fuel feed system. It is mainly used to filter out particles that are present in the fuel. For removal and re-fitment refer Engine on vehicle repairs in this section. CAUTION The fuel filter and fuel sedimentor should be replaced as recommended in the service schedule. If this is not done, it may result in impurities or particles entering the High pressure system causing damage to the Fuel Injection components. c) Priming Pump : Priming pump is provided in the low pressure line just before the fuel filter. It is used to prime the fuel feed system with fuel. This is done in order to avoid air lock in the system. The advantage is that the fuel lines need not be loosened or disconnected to bleed the system. Priming can be done by pressing and releasing the bulge repeatedly till it is filled with fuel.
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