Fuel System; Fuel Water Separator; Fuel Filter; Fuel Lift Pump - Westerbeke 10.0 EGTD Operator's Manual

FUEL SYSTEM
DIESEL FUEL
Use a diesel fuel that meets the requirements of No. 2-D SAE.
J 313 and has a cetane rating of 45 or higher according
to
AS1MD975.
FUEL WATER SEPARATOR
A primary fuel filter of the water separating type must be
installed between the fuel tank and the engine to remove
water and other contaminant's from the fuel before they can
be carried to the fuel system on the engine.
Most installers include a filter/water separator with the
installation package as they are aware of the problems that
contaminant's in the fuel can cause.
A typical fuel filter/water separator is illustrated below.This
is the
Raycor Model 500 MA. Keep in mind that if a water
separator type filter is not installed between the fuel supply
tank and
engine~mounted
fuel system, any water in the fuel
will affect the fuel pump, engine filter, and injection equip-
ment. The owner/operator is responsible for making certain
the fuel reaching the engine's injection equipment is free of
impurities. This process is accomplished by installing and
maintaining a proper filtration/separation system.
FUEL FILTER
WATER SEPERATOR
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FUEL INJECTION PUMP
tff:\1 .
The fuel injection pump is the most important component of
the diesel engine,requiring the utmost caution in handling. The
fuel injection pump has been thoroughly bench-tested and the
owner-operator is cautioned not to attempt to service
it. If
it
requires servicing, remove it and take it to an authorized fuel
injection pump service facility. Do not attempt
to
disassemble
and repair it.
Speed (hertz) and timing are the only adjustments the
servicing dealer can perform on the injection pump. Other
types of adjustments or repairs must be performed by a
qualified injection service shop.
FUEL LIFT PUMP
Periodically check the fuel connections
to
and out of the
pump and make sure that no leakage is present and that the
fittings are tight and secure. The DC ground connection at
one of the pumps mounting bolts should be dearcand well
secured by the mounting bolt to ensure proper pump
operations.
When energized thru the preheat circuit, the fuel lift pump
will purge air from the fuel system and provide continuous
flow of fuel as the engine is running.
17
FUEL FILTERS
The fuel injection pump and the fuel injectors are precisely
manufactured and they must receive clean diesel fuel, free
from water and dirt. To ensure this flow of clean fuel, the fuel
must pass through at least two fuel filters, a fuel filter/water
sepru:ator and the engine's spin-on fuel filter. Visually inspect,
clean, and change these filters according to the maintenance
schedule in this manual.
INLET FUEL FILTER
To ensure properly filtered fuel into the fuel pump, there is a
small inlet filter befQre the inlet to the fuel pump. Replace
this filter after the initial 50 hours of operation, then follow
the Maintenance Schedule in thiS manual. ·
FUEL FILTER ASSEMBLY
ENGINE FUEL FILTER
Periodically check the fuel connections and the bowl for
leakage. Clean the filter element with kerosene or diesel fuel
after the first 50 hours then follow the MAINTENANCE
SCHEDULE for cleaning and replacement.
Changing/cleaning the filter element
1. Shut off the fuel supply.
2. Unscrew the retainer ring that holds the filter bowl to the
housing and allow the bowl to come away from the
housing,
3. Remove and replace the filter element and clean the bowl.
4. Replace the sealing "0" ring and reassemble the bowl to
the housing. Thread the retainer ring on carefully so as not
to cross thread. When retainer contacts the "0" ring,
tighten 1/4 - 1/2 turns by hand. Open the fuel supply and
run the engine to inspect for leaks.