Armature Disassembly

TM 9- 2920- 232- 34&P / TO 38X14- 2- 32

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DISASSEMBLY OF THE STARTER ASSEMBLY - CONTINUED

0008 00

3. Armature Disassembly

a. Check armature shaft and commutator. Replace if armature shaft bearing diameter exceeds 0.6835 to 0.6845

inch at commutator end and 0.6215 to 0.6230 inch at drive end. The diameter of the armature shaft bearing in

the lever housing shall not exceed 0.8225 to 0.8240 inch.

NOTE

Low resistance of armature windings and interconnection through commutator bars make any

and all commutator bars essentially the same circuit for this test.

b. Inspect armature for grounds with a test light by touching one of the test probes to the armature core and the

other probe to one of the commutator bars. If the test light glows, the armature is grounded and must be

replaced.

Inspect armature for short circuits using a growler fixture. Place the armature in growler. Hold a thin strip of

steel, such as a hacksaw blade on the armature. While holding the steel strip in position, rotate the armature

slowly. A short circuit will cause the strip to vibrate. If a short circuit is found, replace the armature.

0008 00- 8