TM 5-3805-298-23-1
0034
Table 1. Coolant in Engine Oil or Engine Oil in Coolant Continued.
034
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 2. Inspect Cylinder Head
Coolant in Engine Oil or
and Engine Block Mating Surface for
Engine Oil in Coolant -
Coolant Leak.
Continued
1. Inspect mating surface where
Leak Identified - Proceed to step 2.
cylinder head (Figure 2, Item 1)
No Leak Identified - Proceed to Test
and engine block (Figure 2, Item 2)
Step 3.
meet for Class III coolant leak or
indication of coolant leakage.
2. Remove cylinder head (WP 0180)
Leak Identified - Replace cylinder
and inspect cylinder head and
head gasket (WP 0180).
gasket for leakage, corrosion, and
Proceed to Test Step 4.
damage.
No Leak Identified - Proceed to step 3.
Cylinder Head Gasket Corroded or
Damaged - Proceed to step 3.
3. Remove cylinder head (WP 0180)
Leak Identified - Replace cylinder
and inspect cylinder head and
head gasket (WP 0180).
gasket for leakage, corrosion, and
Proceed to Test Step 4.
damage.
No Leak Identified - Proceed to step 4.
Cylinder Head Gasket Corroded or
Damaged - Proceed to step 4.
4. Inspect cylinder head for flatness
Cylinder Head Does Not Pass
and mating face of cylinder head
Inspection - Replace cylinder head
for cracks between valves. Refer
(WP 0180).
to Cylinder Head Inspection
Proceed to Test Step 4.
(WP 0180).
Cylinder Head OK - Proceed to step 4.
5. Inspect top surface of the engine
Engine Block Cracked, Broken, or
block for cracks between cylinders,
Damaged - Replace engine (WP 0178).
breaks, and damage.
Proceed to Test Step 4.
Engine Block OK - Install new cylinder
head gasket, and install cylinder head
(WP 0180).
Proceed to Test Step 4.
0034-4
