TM 11-6660-200-14
5-29.
TRANSMITTER BALANCE TEST. (CONT)
1.
Mount transmitter vertical support (1) horizontally in a vise.
2.
Turn transmitter to a horizontal position.
NOTE
If transmitter remains in a horizontal position, transmitter is in balance and no further testing is necessary.
If either impeller or tail end turns downward, proceed to step 3.
3.
Attach 2-ounce weight (2) to the lighter end of transmitter, 2 1/2 inches from center line of transmitter vertical
support (1).
4.
Using spring tension scale, apply a 0.5-ounce torque to lighter end of transmitter.
NOTE
If transmitter does not move, or end to which the 0.5-ounce torque is applied inclines slightly downward,
transmitter is balanced within tolerance.
If none of the above requirements are met, proceed to step 5.
Depending on amount of balancing necessary, weights can be added or removed under generator
housing, or hub collar can be shifted in or out to bring transmitter into balance.
5.
Remove two screws (3) and lower bracket (4) and either add or remove balance weights (5).
6.
Replace lower bracket (4) and install two screws (3).
7.
Loosen two setscrews (6) and move hub collar (7) in or out to bring transmitter into balance.
8.
Tighten two setscrews (6).
5-39
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