ARMY TM 9-2815-256-24
AIR FORCE TO 38G1-96-2
MARINE CORPS TM 2815-24/5
FIGURE 3-25. Removing Washer and Spring
I.
If necessary, remove screw (25, FIGURE 3-15), nuts (26 and 27), washers (28 thru 31), and lockwashers (31 and
32) from terminal studs on magnetic switch assembly (24).
m. Remove screws (40), washers (41), end plate (42), and contact (43) from magnetic switch assembly (24).
3-12.4. Inspect and Measure/Repair.
a.
Check armature commutator run-out, refer to FIGURE 3-26 as follows:
(1)
Place armature bearings on V-blocks.
FIGURE 3-26. Checking Commutator Run-Out
(2)
Zero dial indicator on commutator.
(3)
Rotate armature and record run-out. Standard is 0.0008 inch (0.02 mm), with a limit of 0.00197 inch (0.5
mm).
(4)
If run-out exceeds limit, replace armature.
b.
Using a micrometer, measure OD of commutator, refer to FIGURE 3-27. If measurement is less than 1.38
inches (35 mm), replace armature.
Change 3
3-43
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