TM 5-3895-373-34
2.76
REPAIR SCREED VIBRATION MOTOR - Continued
A.
DISASSEMBLE - Continued.
4.
REMOVE CHECK VALVE AND NEEDLE BEARING
FROM MOTOR COVER.
a.
Remove machine screws (24) and identification
plate (25) from motor cover (6).
b.
Remove hex socket plugs (26), springs (27), and
balls (28) from motor cover (6).
c.
Remove preformed packings (29) from hex
socket plugs (26). If preformed packings are
damaged or worn, discard preformed packings
and hex socket plugs as a set.
d.
Inspect check valve seats (30) while still installed
for damage that would affect the seating of balls
(28). If no damage is found, do not remove.
e.
If damage is found to check valve seats (30),
use a #1 drill bit, size 0.228 in. (7, 75 mm) and a
portable electric drill, and drill out the check
valve seat.
NOTE
The needle bearing should only be
removed
if
obvious
damage
is
observed. Refer to step C.1 for
damage criteria.
f.
Use a hydraulic press and universal puller kit to
remove needle bearing (31) from motor cover
(6). Discard needle bearing.
5.
DISASSEMBLE MOTOR BODY.
a.
Use a pair of pliers and remove dowel pins (32)
from motor body (17). Ensure not to damage
outer surface of dowel pins when removing.
NOTE
The needle bearing should only be
removed
if
obvious
damage
is
observed. Refer to step C.2 for
damage criteria.
b.
Use internal bearing puller from universal puller
kit and remove needle bearing (33) from motor
body (17). Discard needle bearing.
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