TM 5-3740-218-13&P
5-7. STARTER MOTOR REPAIR
This task covers: Disassembly
Assembly
A. INITIAL SETUP
Equipment Condition :
Tools and Special Equipment:
Tool Kit, 5180-00-177-7033
Reference
Condition Description
Multimeter, AN/URM 105
Snap Ring Pliers
Starter Motor Removed
Materials/Parts:
Brush (4)
Appendix E, Item 2
B. DISASSEMBLY
(1)
Remove three screws (1) from commutator housing (2).
(2)
Remove commutator housing (2) from driver side housing (3).
(3)
Remove commutator (4) by removing snap ring (5) to expose brush holder (6).
(4)
Use multimeter to check for continuity between all brushes (7, 8, 9, and 10) as follows:
NOTE
Continuity check determines serviceability of center bracket. If positive
brushes have no continuity, starter motor must be replaced.
(a)
Check continuity between positive brush (9) and positive brush (10). There shouldbe continuity. If there is
no continuity, replace starter motor (para 5-6).
(b)
Check continuity between negative brush (7) and positive brushes (9 and 10).
There should be no
continuity. If there is continuity, replace starter motor (para 5-6).
(c)
Check continuity between negative brush (8) and positive brushes (9 and 10).
There should be no
continuity. If there is continuity, replace starter motor (para 5-6).
(5)
Remove two negative brushes (7 and 8) with springs and brush holder (6) by removingtwo screws (11).
Discard brushes.
(6)
Remove insulator (12) and two positive brushes (9 and 10) by removing two screws (13). Discard brushes.