TM 55-1520-240-23-7
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TEST TRANSMISSION OIL TEMPERATURE SELECTOR SWITCH OR INDICATOR
(AVIM)
(Continued)
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SENSITIVITY TEST
22.
Adjust AFT decade (12), MIX decade (13), LEFT
decade (14), and RIGHT decade (15) to 1000
ohms.
23.
Adjust FWD decade (11) until pointer of indicator
(5) reads 10ºC. Record decade setting.
24.
Adjust FWD decade (11) down until pointer of
indicator (5) just begins to move. Record decade
setting.
25.
Compare settings for FWD decade (11) in steps
23 and 24. Difference shall be no more than 9.0
ohms.
26.
Repeat steps 23 thru 25 four times. Use 40ºC,
60ºC, 100ºC, and 120ºC as starting points. Then
go to step 27.
27.
Repeat steps 23 thru 25 five times. Use 120ºC,
100ºC, 60ºC, 40ºC, and 10ºC as starting points
and adjust FWD decade (11) up. Then go to
step 28.
RESPONSE TEST
28.
Set selector switch knob (3) to SCAN. Adjust
FWD decade (11), AFT decade (12), MIX decade
(13), LEFT decade (14), and RIGHT decade (15)
to 1500 ohms.
29.
Adjust FWD decade (11) up until pointer of
indicator (5) moves to follow adjustment. Pointer
shall first decrease then increase to follow
adjustment. Check down scale movement of
pointer. Down scale movement of pointer shall
be less than 2.5ºC.
30.
Adjust FWD decade to 1500 ohms.
31.
Repeat steps 29 and 30 at AFT decade (12),
MIX decade (13), LEFT decade (14), and RIGHT
decade. Then go to step 32.
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