TM 5-3895-379-23-1
0006
TROUBLESHOOTING PROCEDURE
SYMPTOM
COOLANT IN ENGINE OIL/ENGINE OIL IN COOLANT
MALFUNCTION
Water Pump Leaks.
CORRECTIVE ACTION
NOTE
Class I leakage at water pump bleed holes is normal. Any Class II or Class III
leakage represents a problem with the water pump.
1.
Open right-side door assembly (TM 5-3895-379-10).
2.
Check water pump for signs of leakage (discoloration, corrosion, wetness).
NOTE
There are two failure bleed holes located on engine side of water pump.
3.
Check failure bleed holes for Class II and Class III leakage of engine oil or coolant.
If engine oil or coolant is leaking from either failure bleed hole or water pump shows signs
of leakage, perform the following:
(1)
Replace water pump (WP 0144).
(2)
Change engine oil and filter (WP 0077).
(3)
Replace coolant system fluid (WP 0139).
WATER PUMP
WATER PUMP
WATER
PUMP
SHOWN
REMOVED
FAILURE
FOR CLARITY
BLEED HOLES
T0052SWR
Figure 1. Water Pump.