Terex RT700 - Alternator Troubleshooting

TROUBLESHOOTING
OPERATION NOISY
CAUSE REMEDY
Worn or dry bearings.............................................................................Replace worn bearings.
Alternator mounting loose.....................................................................Tighten alternator mounting.
Belt loose...............................................................................................Replace worn belt or tighten loose belt.
Brush holders out of alignment .............................................................Replace brush holders.
Brushes not seated properly ..................................................................Reseat or replace brushes.
Armature unbalanced ............................................................................Replace armature.
Commutator out-of-round .....................................................................Dress commutator.
Loose windings .....................................................................................Replace defective windings.
Armature rubbing ..................................................................................Replace bearings.
EXCESSIVELY HIGH ALTERNATOR ELECTRICAL OUTPUT
CAUSE REMEDY
Alternator regulator out of adjustment..................................................Replace regulator.
Field leads shorted.................................................................................Replace or repair alternator.
Alternator regulator shorted ..................................................................Replace regulator.
ALTERNATOR MECHANICALLY INOPERATIVE
CAUSE REMEDY
Belt loose...............................................................................................Tighten belt.
Armature shaft sheared..........................................................................Replace or repair alternator.
ALTERNATOR
RT700 Series Page 5 - 10 Issued: August 2003