TROUBLESHOOTING
TESTING AND ADJUSTING
TM 5-3805-263-14&P-2
29. ALTERNATOR HAS NOISE
Cause
Drive Belt for Alternator is Worn or
Has a Defect
Loose Alternator Drive Pulley
Drive Belt and Drive Pulley For
Alternator Are Not in Alignment
Worn Alternator Bearings
Armature or Rotor Shaft is Bent
Rectifiers in the Alternator Are
Shorted
Correction
Install a new drive belt for the alternator.
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.
Make an adjustment to put drive belt and drive pulley in correct
alignment.
Install new bearings in the alternator.
Make a replacement of the component.
Make a replacement of the diode assembly.
30. EXHAUST TEMPERATURE IS TOO HIGH
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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