RA1.2, R1.4, R2.0, R2.2, R2.5, R2.7, R3.0, R4.5 and R5.5 Series Reduction Starting Motors Caterpillar

Remove the starting motor from the machine. The procedure for removal of the starting motor may vary slightly with a different series of starting motor.

Illustration 1	g00585273

1. Disconnect the terminal lead wire (1) from the solenoid (2) .

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Illustration 2	g00585281

2. Remove the through bolts from the drive end housing (4). The through bolts holds the case of the starting motor (3) onto the solenoid.

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Illustration 3	g00585290

3. Remove the case of the starting motor (3) from the solenoid (2) .

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Illustration 4	g00585304

4. If the case of the starting motor has an end frame, remove the end frame. Release the tension of the brush springs (5) with a pair of long nose pliers. Pull the brushes (6) away from the commutator. Remove brush holder (7) .

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Illustration 5	g00585312

5. Remove the armature (8) from the case of the starting motor (3). A plastic or rubber hammer may be necessary in order to drive the case of the starting motor from the armature.

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Illustration 6	g00585319

6. Remove the screws that hold the drive end housing (4) to the solenoid (2) .

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Illustration 7	g00585327

7. Remove the drive end housing (4) from the solenoid (2) .

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Illustration 8	g00585337

8. Remove the overrunning clutch (9) from the drive end housing (4) .

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Illustration 9	g00585348

9. Remove the steel ball (10) from the overrunning clutch (9) .

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Illustration 10	g00585386

10. Remove the armature reduction gear (11) and the idler gear (12) from the drive end housing (4) .

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Illustration 11	g00585389

11. Remove the retainer (13) and the rollers (14) from the drive end housing (4) .

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Illustration 12	g00585396

12. Remove the return spring (15) from the solenoid (2) .

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NOTICE
Do not use a liquid cleaning agent to clean the armature, field winding, or overrunning clutch. A liquid cleaning agent can damage the insulation in the armature and field windings. The liquid cleaning agent could also dissolve the grease in the overrunning clutch.

13. Clean the armature, the field winding and the overrunning clutch with mineral spirits and brush.

14. If the commutator is dirty, the commutator may be cleaned with "No. 00" sandpaper. Do not use emery cloth.

15. Inspect all parts for wear and damage.