TM 9-4120-399-14
Installation.
c.
(1) Install impeller fan (6) and loosely install two set screws (5) to evaporator fan motor
(7).
(2) Center impeller fan (6) in scroll and tighten two set screws (5).
(3) Install scroll end plate (4), five flat washers (3), five lock washers (2), and five
screws (1).
(4) Repeat for other impeller fan.
(5) Install evaporator fan assembly (See para. 4-29).
(6) Install heater diffuser (See para. 4-25).
(7) Install conditioned air discharge guard (See para. 3-5).
(8) Install top panel (See para. 4-20).
4-31. EVAPORATOR SCROLLS.
This Task Covers:
b. Repair
c. Installation
a. Removal
Initial Setup:
Tools Required
Tool kit, Refrigeration
Material's Required
None
Equipment Condition
Air conditioner shut down and cool.
Top panel removed (See para. 4-20).
Conditioned air discharge guard removed (See para. 3-5).
Heater diffuser removed (See para. 4-25).
Evaporator fan assembly removed (See para. 4-29).
Evaporator impeller fans removed (See para. 4-30).
a. Removal.
(1) Remove two screws (1), two lock washers (2), and two flat washers (3).
(2) Remove five screws (4), five lock washers (5), five flat washers (6), and scroll end
plate (7).
