(a) Mix Magna 8-W-5 filler compound with Magna hardener 50-C-3 in accordance with manufacturer's instructions.
(3)
Repair of Scraped Areas
(a)
Wet sand (cold water) the scraped area with No. 400 (or finer) sandpaper.
(b)
Rinse the sanded area with cold water to remove sandpaper grit.
(c)
Wipe dry with cheesecloth.
(d)
Retexture the repaired surface if required.
(4)
Repair of Cuts or Gouges that do not Penetrate the Material (Nondecorative Side)
(a)
Clean the cut or gouge with Naphtha.
(b)
Fill the cut or gouge with repair cement so that the height of cement is above the surface of the material. Allow to dry.
(c)
If the repair cement shrinks below the surface of the material after drying, repeat step
(b) above.
(d)
If required, sand the cemented area flush with the material surface using No. 400 (or finer) sandpaper.
(5)
Repair of Cuts or Gouges that do not Penetrate the Material (Decorative Side)
(a)
Follow procedure described in steps (4)(a) through (c).
(b)
Abrade the cemented area until flush with the decorative surface.
(c)
Wet sand (cold water) the abraded areas with No. 400 (or finer) sandpaper to remove coarse marks.
(d)
Rinse the sanded areas with cold water and wipe with cheesecloth.
(e)
If repaired surface is "pitted" or "pock-marked," when viewed through a magnifying glass, use the following procedure to repair the "pitted" areas. 1) Clean the "pitted" areas with Naphtha. 2) Apply filler compound. Allow to dry thoroughly. 3) Wet sand (cold water) the repair areas using No. 400 (or finer) sandpiper until
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the excess filler compound has been removed.
NOTE: The repaired areas shall be sanded within 4 to 6 hours; otherwise it will be difficult to remove the excess filler compound.
4) Rinse the sanded areas with cold water and wipe dry with cheesecloth. 5) Retexture the repaired surface, if required.
(6)
Repair of Cracked Areas (Nondecorative Sections)
(a)
Clean the crack and adjacent areas with Naphtha.
(b)
Clamp the cracked sections together.
(c)
Brush coat the crack and adjacent surfaces (approximately 1/2 inch on either side of the crack) with repair cement.
(d)
While the cement is still wet, place a 3/4- to 1-inch strip of glass cloth (Style No. 120, Volan "A" finish) over the crack on each side of the cracked section.
(e)
Brush coat the glass cloth with repair cement. Allow to dry.
(7)
Repair of Cracked Areas (Decorative Sections)
(a)
Clamp the cracked sections together.
(b)
Cut a "V" groove in the crack on the decorative side using a rotary file. The depth of "V" groove shall be approximately one-half to two-thirds the thickness of the cracked section.
(c)
Clean the crack and adjacent areas with Naphtha.
(d)
On the nondecorative side, brush coat the crack and approximately 1/2-inch area on both sides of the crack with repair cement
(e)
While the cement is still wet, place a 3/4- to 1-inch wide strip of glass fabric (Style No. 120, Volan "A" finish) over the cemented crack and brush coat the glass cloth with repair cement. Allow to dry.
(f)
Fill the "V" groove on the decorative side with repair cement so that the height of the cement is above the decorative surface. Allow to dry.
(g)
Complete the repair in accordance with steps (4)(c) and (5)(b) through (e)5).
(8)
Repair of Broken-Off Nondecorative Sections
(a)
Clean the faying and adjacent surfaces with Naphtha.
(b)
Brush coat the faying surfaces with repair cement and immediately clamp the broken sections together.
(c)
Brush coat both sides of the bondline and adjacent surfaces (approximately 1/2 inch on either side of the bondline) with repair cement.
(d)
While the cement is still wet, place a 3/4- to 1-inch wide strip of glass cloth (Style No.120, Volan "A" finish) over the bondline on each side of the section.
(e)
Brush coat the glass cloth with repair cement. Allow to dry.
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Nov 15/71 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 25-23-311 Page 803
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