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 TM 55-1905-223-24-3
Table 2-2. Troubleshooting-Cont
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CAUTION
Do not apply more than 20 psi (140 kPa) air pressure to the cooling system. The water
pump seal may be damaged.
(3)
Install the pressure tester on the surge tank and apply 20 psi (140 kPa) maximum air pressure.
(4)
Install the coolant system pressure cap.
(5)
Inspect for coolant leaks and repar if necessary.
i
(6)
Remove the pressure test equipment and the plug from the pressure relief valve overflow tube.
12. Coolant in the lubricating oil.
WARNING
Make sure engine is cooled to below 120 (50 ) to avoid burn injury.
F
C
STEP 1.
Check cylinder liner, crevice seal, or cylinder block for leaks.
a.
Drain the engine lubricating oil (PMCS Table 2-1, Item 15).
b.
Remove the lubricating oil pan (para. 3-21).
CAUTION
Do not apply more than 20 psi (140 kPa) air pressure to the cooling system. The water
pump seal may be damaged.
c.
Use 20 psi (140 kPa) air pressure to pressurize the engine cooling system.
NOTE
Apply the air pressure 15 minutes before inspecting the cylinder liner, the crevice seal,
or the cylinder block for coolant leaks. Make sure the system is holding air pressure
before beginning the inspection.
d.
Inspect the inside and the outside diameters of the cylinder liners and also the area of the cylinder block
around the crevice seals and the push tubecavity for coolant leaks.
e.
If a leak is found, remove the pressure test equipment. Remove the cylinder head gasket (para. 2-43)
and inspect for coolant leaks.
f.
Remove and inspect the cylinder liner(s) for cracks, porosity, or crevice seal damage (para. 4-17).
2-33
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