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b. Removal. Remove eight screws and lock
washers and remove evaporator air inlet louver (fig.
4-2). Slide return air filter from retaining clips on
louver.
c. Cleaning and Inspection. Clean and inspect air
filter as follows:
(1) W ash filter in detergent or cleaning solvent
(Fed. Spec. P-D-680). Dry thoroughly.
(2) Inspect filter for damage or clogged
condition. Replace filter if damaged or clogged.
(3) Reoil filter with SAE 30 oil. Drain eight
hours and wipe off excess oil.
d. Installation. Slide filter into air inlet louver
and secure louver to housing with eight screws and
lock washers.
4-18. Evaporator Air Inlet and Outlet Louvers
a. General The evaporator air inlet louver is
adjustable to control the amount of return air that
will pass through the air conditioner when the fresh
air ventilation damper is open. The evaporator air
outlet louver, mounted in front of the evaporator
coil, has individually adjustable blades to direct the
evaporator air outlet flow.
b. Removal. Refer to paragraph 4-17 and remove
the evaporation air inlet louver. Refer to figure 4-2
and remove the evaporator air outlet filter by
removing eight screws and lock washers.
c. Cleaning, Inspection and Repair. Clean,
inspect and repair louvers as follows:
(1) Clean louvers with cleaning solvent (Fed.
Spec. P-D-680).
(2) Inspect for bent or broken louver blades.
Straighten bent blades. Replace louver if damaged.
d. lnstallation. Refer to paragraph 4-17 and
install the air inlet louver. Install outlet louver over
discharge opening and install eight screws and lock
washers.
4-19. Fresh Air Vent Guard and Filter
a. General. The fresh air screen (fig. 4-3),
mounted on the rear wall of the housing, covers the
fresh air inlet opening to prevent bugs and other air
borne matter from entering the air conditioner.
This unit was designed for use with CBR.
4-8
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