Iveco Marine Diesel Engines, Installation Handbook

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1. Rubber holder pipe union with bordered end - 2.Threaded pipe union.
6.5 FUEL FILTERING
IVECO engines are fitted with replaceable single or double-filters with paper filtering element which
meet the requirements of the injection system in terms of filtering level. They are inserted in the feed
pump supply circuit, before the high-pressure injection pump. Other data and information about the
maintenance intervals are included in the use and maintenance handbooks of each engine.
The range of more powerful engines can be fitted, when required by the Classification Bodies, with
double-cartridge filters suitable for the replacement when the engine is running; make reference to the
use and maintenance handbook for the correct use of the shunting cock (see figure 7).
IVECO supplies a decanting pre-filter with the engine which, if installed at the shipyard along the pipe
supplying the fuel to the engine, protects the feed pump against the wear caused by the impurities and
the water present in the fuel.
Prescriptions:
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The pre-filter shall be installed on the feeding pipe next to the reservoir, in a point relatively low of
the circuit and in a position easily accessible for maintenance, water and deposit bleeding, and prim-
ing. The position close to the reservoir ensures that the pipe is free of water and deposits which
might damage it.
■
Do not use additional filters, mesh or paper filters, along the feeding pipes between the decanting
pre-filter and the pump. The filters fitted on the engine fulfil their functions correctly and being on
the engine, i.e. in a “hot” place, the risk of clogging due to ice or paraffin oils is limited.
■
In the choice of the engine installation in the engine room, foresee an easy access to the filters to
make sure they can be replaced easily and ensure the correct system bleeding.
In those countries where dust and water can be present in the fuel, such as Africa, the Middle and Far
East, Eastern Europe, South America, it is suggested to insert another decanting pre-filter.
MARCH 2004 FUEL SUPPLY
6.72
MARINE ENGINES INSTALLATION
Figure 6
1 2