Figure 4-21. Fuel Filler Cap and Filter Screen

4-11. FUEL SYSTEM SERVICE. The fuel system

should be checked periodically for leakage at tube

fittings and hose connections, and the fuel filter

replaced, according to the schedule established in

a. Refer to figure 4-21 and remove filler cap and

filter screen with o-ring seal. Check condition of

filter screen and clean as required.

Figure 4-22. Coolant Level Indicator

b. Check that the o-ring seal around neck of filter

screen is intact and in otherwise good condition.

f. Remove filter element and housing gasket, and

discard. Clean filter element housing thoroughly.

c. Make certain that filter screen is properly in

place before replacing filler cap.

g. Position the new element in the filter element

housing. Coat the new gasket with a light film of

d. The fuel filter is mounted adjacent to the fuel

engine oil and place gasket in position on filter

pump and is accessible from the left side of the

element housing.

engine compartment.

h. Place housing under filter cover, with element

in place, and snap wire bail over bottom of housing

to retain assembly.

A small amount of fuel spillage will result

4-12. COOLING SYSTEM SERVICE.

when the filter housing is removed. Make

certain that no spark or open flame exists

in the work area, and also that the engine is

sufficiently cool to prevent the possibility

o f igniting the gasoline fumes resulting

This truck is equipped with a pressurized

from the fuel spillage.

cooling system. Use extreme care when

removing the radiator cap when the engine

e . Unhook the wire bail from underneath the

h a s recently been operating. The sudden

filter element housing and separate housing from

r e l e a s e of pressure from the system can

filter cover as shown in figure 4-21.

4-16