TM 5-3805-262-20
3-4. ENGINE TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. ENGINE STALLS FREQUENTLY OR DOES NOT DEVELOP FULL POWER.
Step 1.
Remove engine left side panels (page 9-14).
Check engine oil level dipstick for over filled engine crankcase
signs of water in crankcase.
a. If engine crankcase is overfilled as indicated by dipstick,
drain excess oil until level is just below full mark on dipstick
(page 4-2). If signs of water are seen, notify next higher main-
tenance level (oil cooler must be replaced).
o r
b. If engine oil level is okay, go to step 2 below.
Step 2.
Remove engine right side panels (page 9-14).
Check for wrong or contaminated fuel in fuel tank (contaminated fuel
will have a milky white appearance).
a. If wrong or contaminated fuel in fuel tank, drain and clean fuel
t a n k ( p a g e 4 - 3 2 ) , r e p l a c e f u e l f i l t e r s ( p a g e 4 - 3 8 ) , a n d r e f i ll
w i t h c o r r e c t f u e l.
b. If fuel is okay, go to step 3 below.
Step 3.
Check for air in fuel system.
a .
Open bleed valve on first stage
f i l t e r .
T e l l a s s i s t a n t t o t u r n i g n i t i on
key switch to on position.
Close bleed valve when clear
bubble free fuel appears. Tell
a s s i s t a n t t o t u r n i g n i t i o n k e y
switch to off position.
Open bleed valve on second stage
f i l t e r .
T e l l a s s i s t a n t t o t u r n i g n i t i on
key switch to on position.
Close bleed valve when clear
bubble free fuel appears. Tell
a s s i s t a n t t o t u r n i g n i t i o n k ey
switch to off position.
Use clean cloth and wipe up any
D i e s e l f u e l s p i l l a g e.
b .
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If no air in fuel system, go to step 4 below.
