Repair of Small Skin Puncture or Cut.
This task covers:
General Mechanics Automotive Tool Kit
Gloves (Item 1, Appendix D)
Caulking Gun (Item 2, Appendix D)
Caulking Cartridge (Item 3, Appendix D)
Epoxy Resin (Items 4 & 5, Appendix D)
Container, Unwaxed (Item 6, Appendix D)
Cloth, Cotton (Item 10, Appendix D)
Cloth, Emery (Item 13, Appendix D)
Solvent, Toluene (Item 9, Appendix D)
Aluminum (Item 19, Appendix D)
Rivet Countersunk (Item 16, Appendix D)
Repair. (Figure 4-4)
Select an aluminum skin patch that overlaps the puncture or cut by one inch in
Position the aluminum skin patch over the puncture and lightly scribe the area of
the patch on the shelter skin.
Remove all paint or foreign matter from the puncture area and an area
approximately one inch around the scribed mark using an emery cloth and
With the aluminum patch over the puncture area, drill holes for 3/16 inch pop
rivets (#11 drill) around the perimeter of the patch, 1/2 inch from the edge of the
patch and on one inch centers.
Roughen the skin surface with coarse grit emery cloth. Be sure that the area is
completely clean. Do not touch the area with the hands or wipe with an oily
Fill the puncture with a fiber filled polyester resin. Then, smooth out evenly to a
featheredge as shown in Figure 4-4, B.
Allow the resin to set thoroughly. Then, sand off excess flush with the contour of
the skin surface.
Use the aluminum skin patch as a template to mark pop rivet holes in the skin of
the shelter, and drill #30 holes in the skin of the shelter.