CONTAINER REPAIR - CONTINUED
REPAIR OF FACE SKIN DAMAGE (ALUMINUM-BONDED MATERIAL) - CONTINUED
Do not use plastic container for mixing. Heat generated by mixed material may result in melting of container
and may cause burns. Mix the Epoxy resin and diethylenetriamine activator in a well ventilated area. The
vapor produces is toxic. Avoid breathing vapors and avoid skin contact with the mixture. If the adhesive
contacts the skin, flush area with warm water and soap. Failure to follow this warning may result in
injury to personnel.
Mix epoxy resin and diethylenetriamine activator in ratio of 100 parts of resin to seven parts of activator by weight.
Add sufficient aluminum powder (MIL-A-82654) to form a thin paste.
This paste will harden in 15 to 20 minutes at room temperature.
Pour paste into damaged area. Do not overfill.
With 1-1/2 in. (38.10 mm) wide spatula, smooth out paste to create a level fill of damaged area.
Cure paste for 24 hours at room temperature.
If necessary, sand and paint with epoxy primer and CARC paint as required.
Repair of extended punctures (Single Face Sheet).
Repair patch areas exceeding size and quantity shown may weaken container. This may result in equipment
damage or personal injury when container is used.
The following procedures should be used to repair a single face sheet (inside or outside face sheet) when
punctures exceed 1/2 in. (12.70 mm) in depth. Repair patches of this type are limited to: one 6 x 6 in.
(152.40 x 152.40 mm) patch in a 21 in. (533.40 mm) central strip of the top and side panels; one 12 x 12 in.
(305 x 305 mm) patch in 33-1/2 in. (851 mm) strips on the panel edges as shown. Note that only two patches
are permitted on the top and on either side panel.
On panel face sheet, lay out rectangle with 0.25 in. (6.35 mm) radius rounded corners to encompass damaged area.
Use a core plug from repair kits as guide.
Cut out face sheet within rectangle, using router bit chucked in 1/4 in. (6.35 mm) electric drill, or use fine tooth
Remove damaged face sheet.
Cut and remove core material to opposite face sheet.
File edges of cutout smooth using fine cut, half round or rotary file chucked in 1/4 in. (6.35 mm) electric drill.
Remove paint from panel face around cutout for distance of 1-1/4 in. (31.75 mm). Paint can be sanded off. All
traces of paint must be removed.
Center patch using predrilled holes in patch as guide. Secure patch temporarily with 1/8 in. (3.18 mm) sheet fas-
Lay out hole pattern around edge of patch. Use 3/8 in. (9.53 mm) edge distance and 1 in. (25.40 mm) spacing. Drill
holes using no. 30 (0.1285 in.) or no. 31 (0.1200 in.) drill.