d. Remove defective support bracket.
Install new support bracket.
Secure to van with bolts, lockwashers, and
Reinstall drain tube on support bracket and secure with new ties.
Reinstall air conditioner/heater (paragraph 1-20.8).
1-20.9 Replace Ventilation Duct.
52C, Utilities Equipment Repairer
Electric Drill and Bits
Ball Peen Hammer
Pop Rivet Gun
Cross Tip Screwdriver
Sealant (Item 16, Appendix E)
Paint (Item 12, Appendix E)
Cheesecloth (Item 4, Appendix E)
Salvaged Ventilation Duct
Turn off air conditioner/heater so air will not blow through duct.
Drill rivets from damaged section of duct. Remove joiner plates.
Remove mounting screws to remove damaged sections of duct.