TM-9-2350-311-34-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311-34-1 6 7 8 9 10 11 12 NOTE If damaged area is near opening in tank, apply backing plate with masking tape and release film, rather than using cloth wire. Cut and trim piece of wire screen slightly larger than opening. If opening is less than 1 in. (25.4 mm) across at greatest point, wire screen is not required. Cut glass cloth patches to size and shape. Cut first patch 0.5 in. (13 mm) larger until sufficient cloth has been built up to make patched area level with surrounding tank wall (usually six or seven patches). Mix resin and hardener as directed on can label. Thoroughly saturate scarfed area and wire screen with cement and apply screen over opening. Remove about 20% of cement from mixing container. Fold in small amount of regenerated silica to obtain putty-like consistency. Use this mixture to apply first two layers of glass cloth. Thoroughly saturate smallest glass cloth with putty-like cement and place it over screen. NOTE Apply release film and work out air pockets after each lamination. Work from center of patch outward. Place piece of release film on patch and work out air pockets from center of patch outward. 5-15