TM 55-8115-203-23 & P
(5)
Cut patch to fit over damaged area. Allow at least a two inch overlap all around the damaged area. The
steel used for patching should be at least 14 gauge. See figure 3-2.
(6)
Grind smooth the cut edges of the patch and the panel being repaired. Grind down to bare metal around
the hole to be patched, leaving three quarters of an inch of bare metal around the damaged area. This will
provide a clean, smooth surface for the exterior patch weld.
(7)
Carefully fit and tack weld the patch in position.
(8)
Continuously weld the patch to the outside of the container. Continuously weld or skip weld the patch from
the inside of the container.
(9)
Paint repaired area according to paragraph 2-4.
(10)
Caulk inside patch seams, where patch was not continuously welded.
(11)
Perform weathertightness test following the procedure in paragraph 2-5.
(12)
Remove shielding if used. If the plywood liner has been removed, replace it according to the procedure in
paragraph 2-9.
d.
Repairing with insert. Repair damaged areas with an insert as follows:
(1)
Remove paint from damaged area.
(2)
Shield affected shoring beam tracks to protect from heat. If panel being repaired is an end panel, remove
plywood liner according to the procedure in paragraph 2-9.
(3)
Carefully flatten damaged metal with hammer, returning metal to original shape as much as possible.
(4)
Cut out badly damaged metal so that a corrugated insert can be closely fitted within the damaged area.
(5)
Cut sheet metal insert to "nest" within damaged area, allowing no more than 5/64 inch gap between the
insert and the panel being repaired. See figure 3-3. The insert must be cut from a panel with corrugations
identical to the original being repaired. Insert material must be at least 14 gage steel.
(6)
Grind smooth the cut edges of the insert and the panel being repaired.
(7)
Carefully fit and tack weld the insert into place.
(8)
Continuously weld the insert into place from the outside.
(9)
Paint repaired area according to paragraph 2-4.
(10)
Perform weathertightness test according to paragraph 2-5.
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