Check commutator for run-out with armature (1) supported on
V-blocks (2). Correct it by using lathe, if required.
Commutator out of round
Limit (maximum value): 0.4 mm (0.015 in.)
Check for wear and replace armature if diameter is below limit.
Commutator outside diameter
Limit (minimum value): 27 mm (1.063 in.)
Correct and clean surface by using #400 emery cloth.
Also check mica depth and correct it as required.
Commutator insulator depth “a”
Limit (minimum value): 0.2 mm (0.008 in.)
1. Mica insulator
2. Commutator segment
YOKE
Check field coil for continuity. There should be continuity between
following terminals.
Between A terminals.
Between B terminals.
Between B terminal and C (bare metal part of yoke body).
OVER-RUNNING CLUTCH
Inspect pinion for wear, damage or other abnormal conditions.
Check that clutch locks up when turned in direction of drive and ro-
tates smoothly in reverse direction. Replace if necessary.
A: Free rotation
6G-10
CRANKING SYSTEM
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Страница 354: ...UNIT REPAIR OVERHAUL ENGINE ASSEMBLY REMOVAL AND INSTALLATION Refer to Section 6A ENGINE MECHANICAL F8D ENGINE 6A1 51 ...
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Страница 644: ...Prepared by Overseas Service Department 1st Ed October 1999 Printing 646 ...