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TM 9-4120-389-14
a.
Removal
(1)
Tag and disconnect six evaporator fan (B3) push on leads from junction box wiring harness.
(2)
Remove screw, flat washer, spacer and locknut that secures evaporator motor leads clamp
and sensor bulb tubing clamp to unit casing.
(3)
Remove two screws and lockwashers that secure the two motor cable clamps to duct scroll
and casing. Remove clamps and left side duct scroll bracket.
(4
Remove screw and lockwasher in clamp that secures sensor bulb to left side scroll. Note
position.
CAUTION
That care that sensing bulb capillary line is not kinked and that
bulb and capillary are not cut or damaged during removal.
(5)
With clamp in place, carefully set bulb aside.
(6)
Remove two screws and lockwasher that secure the right hand duct scroll bracket to the
casing bracket. Remove the right hand duct scroll bracket.
(7)
Remove four screws and flat washers that secure the evaporator fan assembly chassis to the
casing.
(8)
Maneuver the evaporator fan assembly from the unit.
b.
Inspection
(1)
Check for loose or missing hardware. Tighten or replace as needed.
(2)
Check that duct scrolls are not bent, cracked or punctured. Replace as needed (See para. 4-
33).
(3)
Check for damaged gaskets on scrolls. Replace damaged gaskets.
c.
Repair. Repair by component replacement.
d.
Installation
(1)
Maneuver the evaporator fan assembly into the unit.
(2)
Align four through holes in evaporator fan assembly chassis with mounting hardware in
casing.
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