Figure 4-16. Control module connector knob and bulk mounting.

TM 5-4120-352-14

Figure 4-16. Control module connector knob and bulk mounting.

(4) Temperature Selector Switch. Check

b. Testing.

(1) General. Remove four screws securing

for continuity between common terminal 1 and blue

cover to frame. Remove capillary tube grommet and

terminal 2. Switch should close when temperature

slide cover from module. Pull capillary tube bulb

drops below setting. Turn switch knob to full

through hole in cover. To test individual com-

COOLER position. Switch should be open. Turn

ponents, mark and disconnect leads, and check for

switch knob toward WARMER. Switch should close

,continuity. Refer to schematic diagram as a guide

as setting becomes higher than bulb temperature.

and refer to the following additional instructions.

Replace defective switch.

(2) Circuit Breaker. Check for continuity

(5) Mode Selector Rotary Switch. Refer to

between corresponding terminals in closed position.

wiring diagram chart showing connections made by

Check for proper functioning in open position. Re-

switch in various switch positions. Check for con-

place defective circuit breaker.

tinuity. Replace defective switch.

(3) Evaporator Fan Toggle Switch. Check

c. Disassembly.

for continuity in both positions. Replace defective

(1) General. Disassembly is limited to re-

switch.

4-34