Starter Motor

Correct starter motor operation can be confirmed by performing the following free running bench test. This test can only be performed with starter motor removed from vehicle.

1. Remove starter motor from vehicle. See STARTER MOTOR & SOLENOID ASSEMBLY  under REMOVAL & INSTALLATION.
2. Mount starter motor securely in a soft-jawed bench vise. Vise jaws should be clamped on mounting flange of starter motor. NEVER clamp on starter motor by field frame.
3. Connect a suitable volt-ampere tester and 12-volt battery to starter motor in series, and set ammeter to 100 ampere scale. See volt-ampere tester manufacturer instructions.
4. Install jumper wire from solenoid terminal to solenoid battery terminal. Starter motor should operate. If starter motor fails to operate, replace faulty starter motor assembly.
5. Adjust carbon pile load of tester to obtain free running test voltage. See STARTER SPECIFICATIONS  for starter motor free running test voltage specifications.
6. Note reading on ammeter and compare reading to free running test maximum amperage draw. See STARTER SPECIFICATIONS  .
7. If ammeter reading exceeds maximum amperage draw specification, replace faulty starter motor assembly.