FRESH AIR DAMPER AND ACTUATOR.-Continued

TM5-4120-383-14

4-18.

FRESH AIR DAMPER AND ACTUATOR.-Continued

Inspect all parts and replace if damaged.

Replace.

Installation.

(1) Install actuator plate with screw, two spring washers,

and nut.

(2) Install damper in opening of housing.

(3) Secure damper cover to housing with two screws lock

washers, and flat washers.

(4) With one nut on each end of push-pull control cable,

install ends of cable through openings in housing.

(5) Install outer nuts on push-pull control cable and insert

ends into mechanical posts of damper and actuator plate.

(6) Tighten outer nuts on push-pull control cable.

(7) Install loop clamp, spacer, screw, nut, and washer.

Adjustment.

(1) Loosen screw on both mechanical posts to release push-

pull control cable ends.

(2) Move arm on damper in both directions and determine the

center between the two extreme stop points.

(3) Move actuator plate so that it is also centered on the

curved portion of the plate.

(4) Tighten screws in both mechanical posts.

(5) Check actuator plate for smooth operation.

(6) Install top covers (para 4-11), supply air louver (para

4-14), and return air louver (para 4-13).

(7) Connect power at power source.

4-54