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 TM 55-1905-223-24-5
Table 2-2. Troubleshooting-CONT
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Exhaust pressure must not exceed 3.0 inches Hg (7.5 cm).
c.
If exhaust pressure exceeds the specifications, visually inspect the exhaust piping for damage and/or
restrictions.
d
Remove the test equipment.
STEP 5.
Check for defective turbocharger compressor impeller or turbine wheel as follows:
a
Remove the intake and exhaust pipes from the turbocharger (para. 2-26).
b.
Visually inspect the turbocharger compressor impeller blades for damage.
c.
If damage is found, replace turbocharger (para. 2-26).
STEP 6.
Check for turbocharger bearings damage.
a
Refer to PMCS Table 2-1, Item 27.
b.
Replace turbocharger (para. 2-26).
15. Low power or excessive smoke (low intake manifold pressure).
STEP 11.
Check for incorrect turbocharger installed. Install correct equipment (par. 2-26). Refer to
TM 55-1905-223-24P.
STEP 2.
Check for dirty air filter element. Refer to PMCS Table 2-1, Item 14.
STEP 3.
Check for intake or exhaust air leaks. Secure loose or replace damaged piping (paras. 2-
39, 2-40).
STEP 4.
Check for excessive exhaust restriction. Refer to Malfunction 14, STEP 4.
STEP 5.
Check for intake air restriction. Refer to Malfunction 14, STEP 3.
STEP 6.
Check for defective turbocharger bearings.
a
Refer to PMCS Table 2-1, Item 27.
b.
Replace turbocharger (para. 2-26).
STEP 7.
Check for malfunction in fuel system. Refer to Malfunction 25.
16. Turbocharger leaks engine oil or fuel
STEP 1.
Check for defective turbocharger turbine seal.
a
Refer to Item 10, STEP 7.
b.
Replace turbocharger (para. 2-26).
Change 2
2-40
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