TM 55-1520-240-23-78-58TEST TRANSMISSION OIL PRESSURE SELECTOR SWITCH OR INDICATOR(AVIM)(Continued)8-58TRANSDUCER CIRCUIT TEST16.Set selector switch knob (3) to SCAN.NOTEWithout 17 , SCAN dial lamp remainson when selector switch is at SCAN.17.Adjust FWD resistor (11) three turns clockwise.18.Check selector switch (2). Without 17 , FWD diallamp shall come on as resistor (11) is adjusted.19.Check indicator (5). Indicator shall read 70 psi.Adjust FWD resistor (11) to 100 percent (fullcounterclockwise).20.Repeat steps 17, 18, and 19 at AFT resistor (12),MIX resistor (13), LEFT resistor (14), and RIGHTresistor (15).SENSITIVITY TEST21.Adjust FWD resistor (11) clockwise until indicator(5) reads 20 psi. Record FWD resistor setting.22.Adjust FWD resistor (11) counterclockwise untilpointer of indicator (5) just begins to move.Record FWD resistor setting.23.Compare settings for FWD resistor (11) in steps21 and 22. Difference shall be less than 1percent.24.Repeat steps 21, 22, and 23 four times. Use 40,50, 70, and 90 psi as starting points. Then goto step 25.25.Repeat steps 21, 22, and 23 five times. Use 90,70, 50, 40, and 20 psi as starting points andadjust FWD resistor (11) clockwise. Then go tostep 26.8-169
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