TM 5-3805-258-24-1
T R O U B L E S H O O T I N G
T E S T I N G
A N D
A D J U S T I NG
29. ALTERNATOR HAS NOISE
Cause
Correction
Drive Belt for Alternator is Worn or
Install a new drive belt for the alternator.
Has a
Loose
Drive
Defect
Alternator Drive Pulley
Check groove in pulley for key that holds pulley in place. If groove is
worn, install a new pulley. Tighten pulley nut according to
Specifications.
Belt and Drive Pulley For
Make an adjustment to put drive belt and drive pulley in correct
Alternator Are Not in Alignment
alignment.
Worn Alternator Bearings
Install new bearings in the alternator.
Armature or Rotor Shaft is Bent
Make a replacement of the component.
Rectifiers in the Alternator Are
Make a replacement of the diode assembly.
Shorted
30. EXHAUST TEMPERATURE IS TOO HIGH
WARNING
If NBC exposure is suspected, aII air filter media should be handled by personnel wearing protective
equipment. Consult your unit NBC Officer or NBC NCO for appropriate handling or disposal instruc-
tions.
Cause
Air Inlet System Has A Leak
Exhaust System Has A Leak
Air Inlet or Exhaust System Has A
Restriction
Wrong Fuel Injection Timing
Correction
Check pressure in the air inlet manifold. Look for restrictions at the
air cleaner. Correct any leaks.
Find cause of exhaust leak. Make repairs as necessary.
Remove restriction.
Make an adjustment to the timing.
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