TM 9-4120-402-14
5-34. FRESH AIR DAMPER. - continued
Figure 5-26. Fresh Air Damper
(6) Drill out four rivets (9) using a drill bit slightly smaller than rivet body. Remove two hinges (10).
(7) Remove screw (11), flat washer (12), retaining bracket (13), and pulley (14) from unit.
(8) To replace gasket, proceed as follows:
(a) Remove as much old gasket material (15) as possible by pulling or scraping it away from the metal
surface.
WARNING
Adhesive remover is flammable and the vapors can be explosive. Repeated or prolonged skin
contact or inhalation of vapors can be toxic. Use in a well ventilated area, wear gloves, and keep
away from sparks or flame.
(b) Soften and remove old adhesive and gasket residue using adhesive remover and a stiff brush.
(c) Coat the mating surfaces of the metal and new gasket material (15) with adhesive. Let both
surfaces air dry until the adhesive is tacky but will not stick to fingers.
(d) Starting with an end, carefully attach the new gasket material (15) to the metal. Press into firm
contact all over.
(9) Secure pulley (14) and retaining bracket (13) to unit using screw (11) and flat washer (12).
(10) Attach two hinges (10) to damper door (5) using four rivets (9).
5-88