TM 55-1520-240-23-7
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TEST TRANSMISSION OIL PRESSURE SELECTOR SWITCH OR INDICATOR
(AVIM)
(Continued)
8-58
TRANSDUCER CIRCUIT TEST
16.
Set selector switch knob (3) to SCAN.
NOTE
Without 17 , SCAN dial lamp remains
on when selector switch is at SCAN.
17.
Adjust FWD resistor (11) three turns clockwise.
18.
Check selector switch (2). Without 17 , FWD dial
lamp shall come on as resistor (11) is adjusted.
19.
Check indicator (5). Indicator shall read 70 psi.
Adjust FWD resistor (11) to 100 percent (full
counterclockwise).
20.
Repeat steps 17, 18, and 19 at AFT resistor (12),
MIX resistor (13), LEFT resistor (14), and RIGHT
resistor (15).
SENSITIVITY TEST
21.
Adjust FWD resistor (11) clockwise until indicator
(5) reads 20 psi. Record FWD resistor setting.
22.
Adjust FWD resistor (11) counterclockwise until
pointer of indicator (5) just begins to move.
Record FWD resistor setting.
23.
Compare settings for FWD resistor (11) in steps
21 and 22. Difference shall be less than 1
percent.
24.
Repeat steps 21, 22, and 23 four times. Use 40,
50, 70, and 90 psi as starting points. Then go
to step 25.
25.
Repeat steps 21, 22, and 23 five times. Use 90,
70, 50, 40, and 20 psi as starting points and
adjust FWD resistor (11) clockwise. Then go to
step 26.
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