Reassembly

(Op. 5520B14 continued)

1. Remove the free wheel and pignon from the rotor.

The free wheel must be replaced whenever the starter motor produces noise during engine starting.

• Perform the following tests on the starter motor components:
• ROTOR: continuity, short-circuit and earth insulation test.
• STATOR: continuity and earth insulation test.
• BRUSH CARRIER SUPPORT: earth insulation test.
• ELECTROMAGNET: continuity and earth insulation test.

Reassembly

• Position the rotor in a vice with padded jaws.
• Fit the free wheel and pignon, the safety ring and the retaining ring on the rotor shaft.
• Position the front support in the vice.
• Insert the rotor and the pignon engaging fork in the respective front support seat.
• Reposition the armature with stator coils on the front support.
• Reassemble brush (+) on brush carrier support.
• Reassemble the brush carrier support in its correct position.
• Reposition the rear support. Screw the two nuts and the two fastening screws.
• Complete with Op. 5520B18 - (STARTER MOTOR ELECTROMAGNET - R.R. WITH MOTOR REMOVED).

5520B18 - STARTER MOTOR ELECTROMAGNET - R.R. WITH MOTOR REMOVED

Removal

• Position the starter motor in a padded vice.

1. Remove nut (1a) and release electromagnet (1c) cable (1b).

1. Remove the three nuts (1a) fastening the electromagnet to the front support (1b).

(Cont..)