TM 5-3610-286-20
2-79.
Main Motor and Drive Assembly.
This task covers:
a. Inspect
b. Test
c. Service
d. Repair
INITIAL SETUP
Tools
Equipment Conditions (cent)
5 mm hex key
Belt guard removed (para. 2-17)
8 mm combination wrench
V-belt removed (para. 2-80)
24 mm combination wrench
Gear box removed (para. 2-77)
0.050 x 0.375 x 8 in. fiat-tip screwdriver
Additional Personnel Requirement
Equipment Conditions
Electrician MOS 35E20
Main control box panels removed
(para. 2-93)
a. Inspect.
WARNING
When working on high-voltage components, always have an additional person
present, and keep one hand away from equipment to reduce hazard of current
flowing through vital organs of body. Remove all jewelry from fingers, wrists,
and neck prior to working on electrical components. Failure to do so may
result in death or serious burns.
(1) Remove twelve hex-head screws and three motor cover panels.
NOTE
To view the top and bottom sets of brushes, it is necessary to position the
commutator in a position that makes them accessible at the openings of the
main motor. The main power switch and push button are located in main
control box, (para. 2-93).
(2) With main power switch ON, push contactor button on relay contactor (c3).
(3) When commutator is expanded to position, turn main power switch OFF.
(4) Inspect commutator carbon brushes for movement in housing.
2-444
