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4-42.
TM 5-4120-377-14
(11) Using screwdriver, remove four screws from control box.
(12) Remove grommet from bulkhead.
Take care that sensing bulb capillary line is not kinked and that bulb and capillary are not
cut or damaged during removal.
Carefully slip remote sensing bulb down through bulkhead hole and remove control panel from unit.
b. Test/Replace/Repair. See the following paragraphs for individual component test, replacement, and
repair.
Wiring harness. (See para 4-38.)
Temperature control thermostat (S2) (See para 4-39.)
Mode selector (rotary) switch (S1). (See para 4-40.)
Control panel housing. (See para 4-41.)
(11)
base.
(12)
Using screwdriver, secure control panel to junction box with four screws.
Take care that sensing bulb capillary line is not kinked and that bulb and capillary are not
cut or damaged during installation.
Carefully feed sensing bulb and capillary up and into conditioned air intake compartment. (See fig.
Using screwdriver, secure remote sensing bulb with clamp, flat washer, lock washer, and screw.
Install grommet in bulkhead.
Coil excess capillary tubing in recess behind control panel.
Connect P7 plug and harness to receptacle J7 on the control panel.
Carefully move junction box into position and aline mounting hardware.
Using screwdriver, tighten four captive panel screws in junction box mounting flanges.
Using screwdriver, secure filter and filter retainer with two captive turnlock stud fasteners.
Using screwdriver, secure intake grille assembly with six captive turnlock stud fasteners.
Set the bottom of the lower front panel in position so that the flange is inside the lip on the cabinet
Push the top of the lower front panel back into position.
(13) Using screwdriver, secure lower front panel to casing with two captive panel fastener screws.
Follow-on procedure: Connect power.
Change 1
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