TM 55-1520-240-23-9
11-156
INSPECT SERVO OR TRIM MOTOR (AVIM)
11-156
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Electrical Tool Kit, NSN 5180-00-323-4915
Dial Indicator, 0 to 0.030 Inch
Dial Indicating Scale, 0 to 50 Pounds
Vise, Soft Jawed
Materials:
None
Personnel Required:
Avionics Mechanic
Inspector
Equipment Condition:
Off Helicopter Task
1.
Clamp motor (1) in vise (2).
2.
Apply 1 pound inward to end of shaft (3). Use
dial indicating scale. Remove scale.
3.
Mount indicator (4) so that movable arm contacts
end surface of shaft (3). Align with shaft axis.
Set indicator to zero.
4.
Apply about 2 pounds a outward on shaft
(3). Pull shaft by hand. Check indicator (4)
movement. Indicator must not indicate more
than 0.006 inch.
5.
Remove indicator (4).
6.
Remove motor (1) from vise (2).
INSPECT
FOLLOW-ON MAINTENANCE:
None
END OF TASK
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