TM 9-4120-388-14
5-31. FRESH AIR DAMPER.
a. Inspection
This task covers:
INITIAL SETUP:
Equipment Condition
Conditioned air filter removed (4-33).
Fresh air filter removal (4-34).
a. Inspection.
(1) Be sure that chain and pendant are in place and not broken.
(2) Be sure that spring loaded hinges are secure and that they cause door to close when chain is released.
(3) Be sure that gasket is not loose, split, or missing.
(4) Be sure that pulley and retaining bracket are in place and that chain works properly around pulley.
(5) Repair or replace parts as indicated.
b. Hinge and door replacement.
(1) Use a drill bit slightly smaller than the rivet body to drill old rivets out.
(2) Rivet replacement hinges and door in place.
(3) Be sure that door springs close when chain is released.
5-71
