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Grinding or squealing noise-continued |
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 49. TROUBLESHOOTING ENGINE ASSEMBLY - Continued
Corrective action
Probable causes
Malfunction
(1) Water pump. Remove
8.
Engine noises -
water pump drive
Continued.
belts (par. 77a). Turn
pump by hand and
check for rough bear-
ing or when squealing
noise is heard, over-
haul water pump (par.
stall water pump as-
sembly (par. 77).
(2) Clutch. Refer to TM
9-2320-235-20 and
remove transmission
assembly and clutch
throwout bearing.
Remove clutch (par.
pilot bearing (par.
assembly (par. 67e).
Refer to TM 9-23~-
235-20 and install
clutch throwout bear-
ing and transmission
assembly.
(3) Air Compressor.
Check belt and belt
tension (par. 65h).
Check air compressor
for failure and replace
defective compressor
(4) Generator. Check
for worn brushes or
defective bearings.
Refer to TM 9-2920-
209-35. Replace de-
fective generator (par.
drive belts (par. 61).
Adjust drive belt
tension (par. 61b).
(5) Turbosupercharger.
Rotate the compressor
wheel by hand. Wheel
should turn freely.
Check end play of
compressor wheel.
Refer to TM 9-2990-
201-35. Replace de-
fective turbosuper-
charger (par. 62).
45
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