Replacement of Synchro Transmitter

11-6625-924-14

6 - 6 . Replacement of Synchro Transmitter

(2) Connect a jumper lead between the stator

yellow and blue wires.

Replace the synchro by performing the procedures in a

and b below, then position and zero adjust it by per-

(3) Set up the multimeter for operation in the 100-

volt ac range.

forming the procedures in c below.

a. R e m o v a l

(4) Connect the multimeter between the blue sta-

tor wire and the red rotor wire.

(1) Loosen the set screw in the synchro transmit-

ter control (fig. FO-l).

(5) Set the INDICATOR TEST switch to TEST.

(6) Set the synchro transmitted control to 0.

(2) Open the cover and remove the clamps holding

the synchro in position.

(7) Loosen the clamps holding the synchro.

(8) Connect the power source output to the INPUT

(3) Disconnect the synchro wires from the test set

and remove the synchro.

binding posts on the test panel.

b. Installation.

(9) Turn on the power source and set the test

panel POWER switch to ON.

(1) Place the new synchro in position with its

shaft in the synchro transmitter control.

(10) Slowly turn the synchro (not shown) until the

minimum indication is obtained on the multimeter (ap-

(2) Install the clamps to hold the synchro (clamps

removed in a(2) above).

proximately 15 volts).

(3) Tighten the set screw in the synchro transmit-

(11) Tighten the clamps holding the synchro.

ter control (fig. FO-1).

(12) Set the POWER switch (fig. FO-1) to OFF.

(13) Disconnect the multimeter from the test

(4) Connect the synchro wires to the test set. Refer

to the schematic diagram for color code connections

panel and the jumper lead between the yellow and blue

(fig. FO-3).

stator wires.

c. Synchro Positioning.

(14) Adjust the synchro transmitter control (para

6-10).

(1) Connect a jumper lead between the rotor and

stator black wires.

6-2