TM 10-5411-205-13
47.
Delamination Repair.
This task covers:
a Inspect
b. Repair
INITIAL SETUP
T o o ls
Materials/Parts
General Mechanic’s Automotive Tool Kit
Riveter
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)
Roller Kit (Item 7, Appendix D)
Tape, Masking (Item 8, Appendix D)
Solvent, Toluene (Item 9, Appendix D)
Cloth, Cotton (Item 10, Appendix D)
Plywood (Item 11, Appendix D)
Polyethylene Sheet (Item 12, Appendix D)
Cloth, Emery (Items 13 & 14, Appendix D)
Sandpaper (Item 15, Appendix D)
Rivet, Countersunk (Item 16, Appendix D)
Inspect. The roof, floor, endwalls, and sidewalls are constructed of inner and outer
aluminum panels which are attached to structural mounting members. The area between the
inner and outer panels is filled with a polyurethane core bonded to the panels with an epoxy
adhesive. Separation of aluminum panel and polyurethane core will cause a structural weak-
ness in the area affected. To restore the overall strength of the shelter, large areas of delami-
nation should be repaired as soon as possible. Delaminated areas of the shelter may be
detected by movements of the aluminum panel similar to the movement of the bottom of an
oil can when pressed. The presence of delaminated areas should produce a light, hollow sound
and a bonded area a dull, solid sound. Sound will also change when tapping crosses panel
mounting members. When it has been determined that a shelter panel area has been delami-
nated, repair as follows
b .
Repair. (Figure 4-1)
(1) Mark off the limits of delaminated area.
CAUTION
To ensure that opposite shelter wall skin is not punctured, make
sure drill bit has a drill stop attached which will prohibit drill bit
from exceeding a depth of 5/8 inch.
(2) Using Figure 4-1 as a visual guide, drill a 3/16 inch diameter hole in approxi-
mate center of delaminated area of affected panel only. This hole will be used
to pump epoxy adhesive into delaminated area.
4-3
