TM 11-6660-200-14
OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES
B-BEFORE
W-WEEKLY
ITEM
INTERVAL
ITEM TO BE INSPECTED/
EQUIPMENT IS NOT
NO.
B
W
PROCEDURE
READY/AVAILABLE IF:
1
WIND DIRECTION INDICATOR
a. Rotate transmitter 360 degrees
Readings do not correspond.
and, using compass, verify that
actual azimuth of transmitter
always corresponds to direction
shown on indicator.
b. Rotate transmitter several turns
Transmitter does not move
and check for sluggish movement.
freely.
2
WINDSPEED INDICATOR
a. Turn transmitter impeller in
Pointer on indicator does
normal directional rotation.
not move or pointer is off
Pointer on indicator must move
zero when impeller is
clockwise away from zero. When
stationary.
impeller is stationary, pointer
should indicate zero.
b. Rotate transmitter impeller in
Impeller does not move
normal directional rotation and
freely.
check for sluggish movement or
binding.
3
CABLES AND CONNECTORS
Inspect for kinks, cuts, or frays on
Cables are defective.
cables and grommets. Check tightness
of all connectors.
4
LIGHT SWITCH
Rotate light switch from full off,
extreme counterclockwise position, to
full bright, extreme clockwise posi-
tion. Lights must progressively in-
crease in intensity as light switch
is turned clockwise without signs of
binding.
2-3
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