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(1) Cover waxed paper or plastic with adhesive backed nylon mesh (dry wall tape) larger than the (2) Tape waxed paper or plastic sheet with mesh to a surface that has a compatible contour to the repair (3) Apply a liberal coat of adhesive over the rein- forcement mesh (Fig. 8). If necessary apply a second (4) After patch has cured, peel waxed paper or plastic from the back of the patch. (5) If desired, a thin film coat of adhesive can be applied to the back of the patch to cover mesh for PANEL PATCH INSTALLATION (1) Make a paper or cardboard pattern the size and shape of the cutout hole in the panel. (2) Trim 3 mm (0.125 in.) from edges of pattern so patch will have a gap between connecting surfaces. (3) Using the pattern as a guide, cut the patch to size. (4) Cut scrap pieces of patch material into 50 mm (2 in.) squares to use as patch supports to sustain (5) Drill 4 mm (0.160 in.) holes 13 mm (0.5 in.) in from edge of cutout hole (Fig. 7). (6) Drill 4 mm (0.160 in.) holes 13 mm (0.5 in.) away from edge of patch across from holes drilled (7) Drill 3 mm (0.125 in.) holes in the support squares 13 mm (0.5 in.) from the edge in the center (8) Scuff the backside of the body panel around the cutout hole with a scuff pad or sandpaper. (9) Mix enough adhesive to cover one side of all support squares. (10) Apply adhesive to cover one side of all support squares. (11) Using number 8 sheet metal screws, secure support squares to back side of body panel with (12) Position patch in cutout against support squares and adjust patch until the gap is equal along (13) Drill 3 mm (0.125 in.) holes in the support squares through the pre-drilled holes in the patch. (14) Apply a coat of adhesive to the exposed ends of the support squares (Fig. 11). Fig. 7 DAMAGED PANEL CUTOUT AND PATCH 1 - CUTOUT Fig. 8 FABRICATED PANEL 1 - STRUCTURAL ADHESIVE Fig. 9 SECURE SUPPORT SQUARES TO BODY PANEL 1 - SUPPORT SQUARES 23 - 8 BODY ZB BODY (Continued) |