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 TM 55-1905-223-24-5
Table 2-2. Troubleshooting-CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Apply the air pressure 15 minutes before inspecting the cylinder
liner, the crevice seal, or the cylinder block for coolant leaks.
d.
Inspect the visible areas of the cylinder liners and also the area of the cylinder block around the
crevice seals and the push tube cavity for coolant leaks.
e.
If a leak is found, remove the pressure test equipment. Remove the cylinder head gasket, and
inspect for coolant leaks.
f.
Remove and inspect the cylinder liner(s) for cracks, porosity, or crevice seal damage (refer to
g.
Visually inspect the cylinder block for cracks or porosity in the crevice seal area.
h.
Install a new gasket and the lubricating oil pan (para. 2-44).
i.
Fill the engine with clean lubricating oil (LO 55-1905-223-12).
NOTE
Make sure the oil drain plug is tight.
j.
Operate the engine until it reaches a temperature of 180 (80 ), and check for coolant or
F
C
lubricating oil leaks.
13. Fuel in lubricating oil.
STEP 1.
Check for low oil and coolant temperature caused by long periods of engine idling.
a.
Turn engine OFF (TM 55-1905-223-10) rather than idling for long periods. If long idle necessary,
increase idle speed.
b.
With engine running, use a tachometer to check the idle speed. It should be between 650 and 725
rpm.
c.
Stop the engine (TM 55-1905-223-10).
d.
Remove the cover plug for the idle speed adjusting screw (para. 2-33).
e.
Operate the engine at high idle for 30 seconds.
f.
Adjust the idle speed with the adjusting screw.
g.
Install the cover plug to the adjusting screw.
STEP 2.
Check for defective top injector o-ring.
Replace top injector o-ring.
STEP 3.
Check for defective injector plunger.
Replace injector plunger (para. 2-34).
STEP 4.
Check for leakage through the inside of the injector adapter (FIGURE 2-6). Replace
injector (para. 2-34).
Change 2
2-37
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