Figure 7-4. Rectifier bridge check.
(4) Stator check . Check the stator for opens
If the reading is low when connected from any stator
lead to the frame, the windings are grounded. If the
meter reading is high when successively connected
between each pair of stator leads, the windings are
open. A short circuit in the stator windings is difficult to
locate without laboratory test equipment due to the low
resistance of the windings. However, if all electrical
checks are normal and the alternator fails to supply rated
output, shorted stator windings are indicated. Check the
regulator in the next step before replacing the stator.
(5) Regulator testing. To determine if the
regulator is defective, use an approved regulator tester.
d. Cleaning, Inspection, and Repair.
Do not use solvent to soak or clean
(1) Clean internal parts with clean, dry com-
Figure 7-5. Checking stator windings.