7
17
18
18
17
9
19
19
20
20
21
TM 9-4940-568-34
5-139
b.
Disassembly of Brush Holder Group.
(1)
Move brush holder assembly (7), with two
grounded brushes (17) and insulated brushes
(18) still installed, away from the frame and
field assembly (9) slightly to reach across
with screwdriver and remove two insulated
brush screws (19).
(2)
Remove frame and field assembly (9) from
brush holder assembly (7).
(3)
Remove two grounded brush screws (20)
from brush holder assembly (7).
(4)
If replacement is needed, grab the brush end
of brush spring (21) with needle nose pliers,
twist the brush spring (21) away from the
brush, and remove two grounded brushes
(17) and two insulated brushes (18) from
brush holder assembly (7).
(5)
If replacement is needed, grab the brush end
of brush spring (21) with needle nose pliers,
twist brush spring away from brush socket
on brush holder assembly (7) and remove
four brush springs (21) from brush holder
assembly (7).
(6)
After all items in Steps (1) through (5) have
been removed, perform inspection and
testing procedures.
