Operation CHARM: Car repair manuals for everyone.

Starter Motor: Testing and Inspection

Starter Performance Test




1. Connect the battery to the starter as shown using as heavy a wire as possible (preferably equivalent to the wire used for the vehicle). To avoid damaging the starter, never leave the battery connected for more than 10 seconds.

2. Connect the battery as shown. If the starter pinion moves out, it is working properly.




3. Disconnect the battery from the body. If the pinion retracts immediately, it is working properly.
4. Firmly clamp the starter in a vise.




5. Connect the starter to the battery as shown, and check that the motor turns and keeps rotating.
6. If the electric current and motor speed meet the specifications when the battery voltage is at 11.5 V, the starter is working properly.

Specifications:
Electric Current: 80 A or less
Motor Speed: 2,300 rpm or more