TP-5592 7/96 Scheduled Maintenance 3-9
Fuel System
Specifications
Use a clean, good quality No. 1-Dor No.2-D diesel fuel
oil with a cetane number of 45 or greater. The fuel must
meet the requirements of the American Society of
Testing and Materials (ASTM) diesel fuel classification
D975.
Usecleanfuelsincedieselengineshaveeasilyclogged,
precision fuel injectors and pumps.
Recommended fuel:
United States ASTM/D975-66T, No. 1-D or No. 2-D
diesel oil.
United Kingdom BS2869 Class A1.
NOTE
Never store diesel fuel in galvanized containers; diesel
fuel and the galvanized coating react chemically to
produceflakingwhich quicklyclogs filtersorcausesfuel
pump or injector failure.
NOTE
Do not run the generator set out of fuel since the fuel
lines will draw in air and necessitate bleeding the fuel
system before restarting the unit.
NOTE
Avoidstoringfuelformorethanonemonth. Takespecial
precautions to keep all dirt, water, and other
contaminants out of the fuel. Diesel fuel storage tanks
containing contaminants and water may cause the
growth of microbes. Microbes form slime which clogs
the fuel filter and lines.
Fuel Filter
Clean the fuel filter with fresh fuel oil and compressed
air. The quality and condition of the fuel largely
determine the filter’s useful life. Replace the fuel filter
element as listed in the service schedule. Use the
following procedure to replace the fuel filter.
1. Close the fuel valve.
2. Loosenthefuelfilterbyturningitcounterclockwise.
Remove fuel filter and use rags to clean up spilled
fueloil. Disposeoffuelfilterinasafeandapproved
manner. See Figure 3-6.
ADV-5853-A
1
Figure 3-6. Fuel Filter Location (Typical)
3. Clean contact surface on fuel oil filter adapter.
4. Lightly lubricate the gasket surface of the new fuel
filterwithfreshfueloil. Threadfilteronadapteruntil
gasket makes contact, hand-tighten an additional
one-half turn. Wash hands after any contact with
fuel oil.
5. Open fuel valve.
6. Bleed the system. Follow the procedures in
Bleeding Fuel System following.
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