TM 5-2420-231-23-1
0016
Table 1. Engine Leaks Oil.
0016
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Remove engine oil dipstick
Engine Leaks Oil
Oil Level OK - Proceed to step 2.
(Figure 1, Item 4) and inspect for
Engine Oil Level Low - Add engine oil
correct oil level (WP 0126) (TM 5-
(WP 0126).
2420-231-10). Engine oil should
Proceed to step 2.
be between the top (MAX) and bot-
tom (MIN) marks.
2. Inspect engine oil dipstick tube
No Signs of Class III Leaks in Mating
(Figure 1, Item 5) for Class III
Surface - Proceed to step 3.
leaks at cylinder block (Figure 1,
Oil Leak Identified - Replace engine oil
Item 3).
dipstick tube (WP 0123).
Proceed to step 12.
3. Inspect engine oil filler tube
No Signs of Class III Leaks in Mating
(Figure 1, Item 2) for Class III
Surface - Proceed to step 4.
leaks at cylinder block (Figure 1,
Oil Leak Identified - Replace engine oil
Item 3).
filler tube O-ring (WP 0120).
Proceed to step 12.
4. Inspect low-pressure fuel pump
No Signs of Class III Leaks in Mating
(Figure 1, Item 1) for Class III
Surface - Proceed to step 5.
leaks between low-pressure fuel
Oil Leak Identified - Replace low-
pump at cylinder block (Figure 1,
pressure fuel pump gasket (WP 0149).
Item 3).
Proceed to step 12.
5. Inspect timing cover for Class III
No Signs of Class III Leaks in Mating
leaks between timing cover
Surface - Proceed to step 6.
(Figure 1, Item 7) and cylinder
Oil Leak Identified - Replace timing
block (Figure 1, Item 3).
cover gasket (WP 0107).
Proceed to step 12.
6. Visually inspect for Class III leaks
No Signs of Class III Leaks - Proceed
at front of crankshaft (Figure 1,
to step 7.
Item 6).
Oil Leak Identified - Replace front
crankshaft seal (WP 0106).
Proceed to step 12.
