Chevrolet 70 1969 Series, Shop Manual

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ENGINE FUEL SYSTEM 6M -17
Drain Cock
tpm-8562-2
Figure
5—Sectional View of Primary Fuel Filter
(6V53 Diesel Engine) (Typical)
definite draining interval can be given since the
regularity depends upon the cleanliness of fuel,
and also the storage facilities. Filter element is
replaceable type. Element replacement procedure
is same as for secondary filter which follows:
S E C O N D A R Y F IL T E R
Secondary filter is disposable-element type
and is bracket-mounted on engine as typically
illustrated in figure 6.
At regular intervals, depending upon operat­
ing experience, drain a small amount of fuel from
filter and observe for presence of water or other
foreign matter.
Although the elements used in primary and
secondary filters (figs. 5 and 6) are of different
design, the element replacement procedure is the
Figure 6—Sectional View of Secondary Fuel Filter
I6V53 Diesel Engine) (Typical)
same for both filters. The filter elements are not
cleanable.
1. Remove drain plug or open drain cock to
drain the filter.
2. Loosen bolt at top of filter until shell and
element can be removed.
3. Lift element from shell and discard.
4. Wash all parts with a suitable solvent to
remove all accumulated foreign matter.
5. Install new element in shell, then position
element and shell assembly to base using gaskets
furnished with new element.
6. Tighten cap screw securing shell in place.
Check filter connections and fuel lines for leaks
and tighten if necessary.
For service of fuel lines refer to F U E L T A N K
A N D E X H A U S T (SEC. 8) of this manual.
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK SH O P M A N U A L