TM 5-3825-226-24
28. ALTERNATOR HAS NOISE
Cause
Correction
Drive Belt For Alternator is
Install a new drive belt for the alternator.
Worn or Has A Defect
Loose Alternator Drive
Check key groove in pulley for wear. If groove is worn, install a
Pulley
new pulley. Tighten pulley nut according to Specifications.
Drive Belt and Drive Pulley
Make an adjustment to put drive belt and drive pulley in correct
For Alternator Are Not in
alignment.
Alignment
Worn Alternator Bearings
Install new bearings in the alternator.
29. EXHAUST TEMPERTATURE IS TOO HIGH
Cause
Correction
Air Inlet or Exhaust System
Remove restriction.
Has A Restriction
Wrong Fuel Injection Timing
Make an adjustment to the timing.
COMPRESSOR TROUBLESHOOTING CHART
SYMPTOMS
CAUSE
REMEDY
30. Compressor passes excessive
A. Restricted air intake.
A. Check engine air cleaner and replace if neces-
oil as evidenced by presence
sary. Check compressor air inlet line for kinks,
of oil at exhaust ports of
excessive bends and be certain inlet lines have
valving or seeping from air
the minimum specified inside diameter.
strainer.
Recommended minimum inlet line inside
diameter is 5/8". Recommended maximum
air inlet restriction is 25" of water.
B. Restricted oil return
B. Oil return to the engine should not be in
(to engine).
any way restricted. Check for excessive
bends, kinks, and restrictions in the oil
return line. Minimum recommended oil
return line size is 5/8" O.D. tubing or
equivalent l.D. (1/2" minimum). Return line
must CONSTANTLY DESCEND from the
compressor to the engine crankcase. Make
certain oil drain passages in the compressor
and mating engine surfaces are
unobstructed and aligned. Special care
must be taken when sealants are used with,
or instead of, gaskets.
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