This task covers:
b. Mid-Panel Patch
c. Patching at Panel Joint
d. Full Panel Replace
General Mechanics Tool Kit (Item 1, App B)
Refrigeration unit shutdown (TM 9-4110-258-13)
Exterior door panel repairs have the following limitations:
No welding of aluminum patches is permitted.
If a patch would cover more than 75% of door panel, the entire door must be replaced.
If damage extends to within 2 inches (50 mm) of the edge of the panel, the overlay patch
must extend to the panel edge.
Use original fastener holes and original overlapping pattern.
Replacement panels and patches must be made from aluminum material of the same
thickness and specification as the damaged panel. Use prepainted patches when
Wet or damaged foam must be replaced before patching or installing a replacement
Aluminum patches should be cleaned and coated with adhesive primer before
application. The part of panel to be overlapped by the patch must also be cleaned and
coated with adhesive primer before the patch is applied.
Patches must adhere to the underlying foam with adhesive.
Patches must be properly riveted to the remaining panel.
Rivets must be of a weather-resistant type.
Dents and compression lines are to be straightened without heating. It should not be necessary
to use heat.
(1) Dents may be straightened without heating by using a flat hammer or mallet backed by a heavy flat