Toggle Switch Cable Assembly Replacement

TM 11-6660-204-25

h. Carefully position the wires so that they do not

3-47. Toggle Switch Cable Assembly

contact any components.

Replacement

i. Remount the switch (with the yellow wire up)

Replace the signal data converter noise suppression

and tighten the retaining nut.

switch (S301) cable assembly as follows (fig. FO-3

and FO-11):

3-48. Replace Relay in Power Supply

a. Remove the nut holding the switch and remove

(fig. 3-12 and FO-6)

the switch from its bracket to provide access to its

To replace relay K401, snap back the retainer clip and

terminals.

remove the relay. Install the new relay in the socket

b. Mark the position of the yellow wire on the

after insuring that the key on the relay aligns with

switch and remove all three leads to the switch.

the key on the relay socket. Reinstall the retainer

c. Unsolder the yellow wire and two green wires

clip.

from the terminal board.

d. Connect one end of the new yellow wire to the

3-49. Fan Motor and Blade Replacement

(previously marked yellow wire terminal) switch.

(fig. 3-5 and FO-9)

Connect the other end of the yellow wire to the termi-

Replace the fan motor and blade assembly by first

nal to which resistor R303 and a yellow wire are

tagging, then electrically disconnecting the fan leads

connected.

from terminal strip E 1, then removing the three nuts

e. Attach one end of one green wire to the center of

holding the motor to the bracket. The fan may be

the switch. Attach the other end of this green wire to

detached from the motor by loosening the setscrew

the terminal to which resistor R307 and a green wire

and removing the blade. To install, slide the fan blade

are connected.

on the new motor shaft and tighten the setscrew.

f. Attach one end of the other green wire to the

Mount the motor to the panel and install the three

remaining terminal on the switch. Attach the other

mounting nuts. Electrically connect the motor leads

end of this green wire to the terminal to which capaci-

terminal block E 1. (Refer to fig. FO-9 for connection

tor C302 and a green wire are attached.

data.)

g. Use a Multimeter to check the continuity of the

connections just made.

Change 3

3-28