TM9-4120-400-14
SCREENS, GUARDS, AND LOUVERS.
This task covers:
a. Repair
b. Replacement
INITIAL SETUP
Equipment Condition
Tools
Remove rear screens and guards (para 4-12).
Refrigeration Unit Service Tool Kit
Remove return air louver and air filter (para 4-13).
Appendix B, item 1
Remove supply air louver (para 4-14).
Materials/Parts
General Safety Instructions
Adhesive Remover
Appendix E, item 16
Adhesive
Appendix E, item 2
Gasket
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.
NOTE
The only authorized repairs are replacement of gaskets and the straightening of bent
blades.
REPAIR
1.
Remove as much old gasket material as possible by pulling or scraping it away from the metal surface.
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.
2.
Soften and remove old adhesive and gasket residue, using adhesive remover and a stiff brush.
3.
Fabricate gaskets in accordance with dimensions provided in Appendix F.
4.
Coat mating surfaces of metal and gasket with adhesive. Let both surfaces air dry until adhesive is tacky but
will not stick to fingers.
5. Starting with an end, carefully attach gasket to metal. Press into firm contact all over.
Minor dents and bent edges can be straightened using common sheet metal repair procedures.
6.
7.
Straighten slightly bent louver blades by hand.
8.
Should touch up or refinishing be necessary, see TM 43-0139.
5-10
