TM 5-3805-262-20
3-5. FUEL SYSTEM TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. LOW FUEL PRESSURE (Cont) .
S t e p 5 . ( C o n t ).
a. If fuel is pumped through fuel supply hose, hold fuel supply
h o s e v e r t i c a l l y t o k e e p i t f i l l e d w i t h f u e l.
Reconnect fuel supply hose to fuel injection pump feed pump. Go
to step 6 below.
b. If fuel is not pumped through fuel supply hose, go to step 8
below.
Step 6.
At fuel injection pump
feed pump, loosen bail
lock nut.
Lower and remove fuel bowl
with gasket, element, and
s p r i n g .
Check fuel element for
varnish coating or clogged
condition.
Check fuel bowl for sedi-
ment.
a . I f f u e l e l e m e n t is
coated with varnish or
c l o g g e d , s e r v i c e it
(page 4-19); if sedi-
ment in fuel bowl,
clean fuel bowl (page
4-19). Go to step 7
below.
b. If fuel element and
fuel bowl are okay,
i n s t a l l s p r i n g , f u el
element , and gasket in
fuel bowl.
Install fuel bowl with
i n s t a l l e d p a r t s.
S l i d e b a i l i n t o p o s i -
tion and tighten lock
nut finger tight. Go
to step 7 below.
3-46
