End Play for the Armature

ELECTRICAL SYSTEM

TESTING AND ADJUSTING

End Play for the Armature

The correct end play for the armature is .005 to .030

in. (0.13 to 0.76 mm). To make an adjustment to the

end play for the armature, add or remove thrust washers

on the commutator end of the armature shaft.

Pinion Clearance

1. To make an adjustment to the pinion clearance,

connect the solenoid to a 12 volt battery as

shown,

CONNECTION FOR CHECKING PINION CLEARANCE

1. Connector from MOTOR terminal on solenoid to

motor, 2. SW terminal. 3. Ground terminal.

1. Install the solenoid without connector (1) from

the MOTOR connection (terminal) on solenoid

to the motor.

2. Connect a battery, of the same voltage as the

solenoid, to the terminal (2), "SW".

3. Connect the other side of battery to. Ground

terminal (3).

CONNECTIONS FOR ADJUSTMENT OF

THE PINION CLEARANCE

1. Terminal.

2. Connect for a short moment, a wire from the

solenoid connection (terminal) "MOTOR" to the

terminal (1) at the commutator end head. The

solenoid and drive will shift to the crank position

and will stay there until the battery is

disconnected.

3. Push the drive toward the commutator end to

remove any free movement.

PINION CLEARANCE ADJUSTMENT

4. Measure the pinion clearance (3). The pinion

4. Shaft nut. 5. Pinion. 6. Pinion clearance.

clearance (3) must be .020 to .050 in. (0.51 to

4. Connect for a moment, a wire from the solenoid

1.27 mm).

connection (terminal) "MOTOR" to the ground

5. To make an adjustment to the pinion clearance,

connection (terminal). The pinion will shift to

remove the plug and turn the adjustment nut (2)

crank position and will stay there until the

as necessary.

battery is disconnected.

5. Push the pinion toward commutator end to

remove free movement.

6. Pinion clearance (6) must be .36 in. (9.1 mm).

7. Pinion clearance adjustment is

made

removing plug and turning nut (4).

Pinion Clearance Adjustment (Prestolite)

There are two adjustments for this type starting motors.

They are end play for the armature and pinion

PINION CLEARANCE ADJUSTMENT

clearance.

2. Adjustment nut 3. Pinion clearance.