Fuel System; Specification; Fuel Filter - Kohler 15CCO Service Manual

Specification

Use a clean, good quality No. 2-D (DIN 51 601) diesel
fuel oil. The fuel must meet the requirements of the
American Society of Testing and Materials (ASTM)
diesel fuel classification D975 (Federal Specification
W-F-800a). Cleanliness of the fuel is especially
important on diesel engines which have easily clogged
precision fuel injectors and pumps. See chart below.
United States ASTM/D975
United KingdomBS2869 Class A1 or Class A2
Other Considerations:
Sulfur Content . . . . . . . . . . . . . . . . . . .
Sediment/Water Content
Cetane Number . . . . . . . . . . . . . . . . . . . . .
Pour point . . . . . . . . . . . . . . . . . .
Never store diesel fuel in galvanized containers; diesel
fuel and the galvanized coating react chemically to
produce flaking which quickly clogs filters or causes
failure of the fuel pump or injectors. Do not run the
generator set out of fuel; air will be drawn into the fuel
lines and the entire system will have to be bled before
the unit can be restarted.
Avoid storing fuel over long periods of time. Take special
precautions to keep all dirt, water, and other
contaminants out of the fuel. Storage tanks containing
diesel fuel contaminated with water may cause the
growth of "microbes." The presence of microbes will
form a slime which will clog fuel filters and lines.
3-6 Scheduled Maintenance

Fuel System

No. 2-D Diesel
Less than 0.5%
. . . . . . . Not to exceed 0.1%
45 minimum
At least 10_F (5.6_C)
Below the lowest outside
air temperature
NOTE
NOTE

Fuel Filter

The fuel filter serves to remove water and dirt contained
in the fuel. The fuel filter element is paper and no attempt
should be made to clean it. Its useful life will be
determined largely by the quality and condition of the
fuel used. Under normal conditions, the fuel filter
element should be replaced for the first time after 50
hours or one month and then every 300 hours or six
months. See Figure 3-6 for location and use the
following procedure to service the fuel filter.
1. Loosen the fuel
counterclockwise direction. Use rags to clean up
spilled fuel oil. Remove and discard filter.
2. Clean contact surface on the fuel filter adapter.
3. Lightly lubricate the gasket surface of the new fuel
filter with fresh fuel oil. Thread the fuel filter to the
adapter until the gasket makes contact, hand
tighten an additional one-half turn.
4. See "Bleeding" section following.
1
1. Fuel Filter
Figure 3-6. Fuel Filter Location
filter by turning in
1-933
TP-5606 6/02
a