Perform the following procedure in order to measure the pinion clearance:

1. Remove the M terminal (1) nut.
2. Insulate the motor winding connector from the M terminal (1) stud.

On a four terminal solenoid, disconnect the jumper wire. Ground the return terminal to M terminal (1).

3. Connect the wires as shown in the above figure.
4. Momentarily flash a jumper lead from ground to the M terminal (1).
5. Push the pinion or drive back toward the commutator end in order to eliminate slack movement.



6. Measure the pinion clearance.

Compare the reading to the specified pinion clearance. The clearance should be from 0.25-1.78 inch (0.01-0.07 mm).

7. Adjust the clearance by removing the plug and turning the shaft nut.