Figure 4. Simulator unit - internal left view.

TB 9-4920-361-24

(4) Set ON-OFF-SIM ONLY switch to SIM ONLY. If multimeter does not indicate

between 3.447 and 3.735 V ac, perform b (1) through (4) below.

(5) Set ENGINE OIL PRESS NO. 1 HI/LO switch to HI. Multimeter will indicate

between 2.770 and 3.058 V ac.

(6) Set ENGINE OIL PRESS NO. 1 CAL/NOR switch to NOR and adjust

ENGINE OIL PRESS NO. 1 variable control from fully ccw to fully cw. If multimeter does

not indicate from more than 3.447 to less than 2.770 V ac, perform b (1) through (3) and (5)

and (6) below.

(7) Set ON-OFF-SIM ONLY switch to OFF and calibrator to STBY.

(8) Connect equipment as shown in figure 3, connection A, for connector No. 2.

(9) Repeat (2) through (7) above except use ENGINE OIL PRESS NO. 2 controls.

If not within tolerance in (4) above, perform b (1) through (3) and (7) below. If not in

tolerance in (6) above, perform b (1) through (3) and (8) and (9) below.

b. Adjustments

(1) Set autotransformer and dc power supply to OFF, and calibrator to STBY.

(2) Remove pressure board A2 (fig. 4) and reinstall, using extender board.

Figure 4. Simulator unit - internal left view.

(3) Set autotransformer, dc power supply, and calibrator power to ON.

(4) Adjust R5 (fig. 4) for a 3.591 V ac indication on multimeter (R).

(5) Turn ENGINE OIL PRESS NO. 1 variable control fully ccw.

(6) Adjust R1 (fig. 4) for a 3.591 V ac indication on multimeter (R).

(7) Adjust R22 (fig. 4) for a 3.591 V ac indication on multimeter (R).

(8) Turn ENGINE OIL PRESS NO. 2 variable control fully ccw.

(9) Adjust A2R18 (fig. 4) for a 3.591V ac indication on multimeter (R).