TM 5-3805-291-23-1
TURBOCHARGER ASSEMBLY, AIR LINES, AND OIL LINES REPLACEMENT - CONTINUED
0032 00
CLEANING AND INSPECTION - CONTINUED
Compressor and Compressor Housing Inspection
1.
Remove air piping from compressor inlet (WP 0031 00).
2.
Inspect compressor wheel for damage from a foreign object. If there is damage, determine source of foreign object. As
required, clean and repair intake system. Replace turbocharger. If there is no damage, go to step 4.
3.
Clean compressor wheel and compressor wheel housing if you find build up of foreign material. If there is no build up
of foreign material, go to step 4.
4.
Turn rotating assembly by hand. While you turn assembly, push assembly sideways. Assembly should turn freely. Com-
pressor wheel should not rub compressor wheel housing. Replace turbocharger if compressor wheel rubs compressor
wheel housing. If there is no rubbing or scraping, go to step 5.
5.
Inspect compressor and compressor wheel housing for oil leakage. An oil leak from compressor may deposit oil in after-
cooler. Drain and clean aftercooler if you find oil in aftercooler (WP 0189 00).
a.
Check oil level in crankcase. If oil level is too high, adjust oil level (WP 0025 00).
b.
Inspect air cleaner element for restriction. If restriction is found, correct problem (WP 0030 00).
c.
Inspect engine crankcase breather. Clean engine crankcase breather or replace engine crankcase breather if
plugged (WP 0026 00).
d.
Remove oil drain line for turbocharger. Inspect drain opening. Inspect oil drain line. Inspect area between bearings
of rotating assembly shaft. Look for oil sludge. Inspect oil drain hole for oil sludge. Inspect oil drain line for oil
sludge in drain line. If necessary, clean rotating assembly shaft. If necessary, clean oil drain hole. If necessary,
clean oil drain line.
e.
If steps 5a thru 5d did not reveal source of oil leakage, turbocharger has internal damage. Replace turbocharger.
427-C1976
0032 00-5
