Cessna 150 Series Service Manual page 258

19-1. PAINTING OF FORMED ABS PLASTIC PARTS. for the topcoat. Paint must be thinned with appropri-
The following procedures outline some basic steps
ate acrylic thinner and applied as a wet coat to ensure
which are useful during touchup or painting of form-
adhesion.
ed ABS plastic parts.
b. Touch Up of Previously Painted Parts.
19-2. INTERIOR PARTS (Finish Coat of Lacquer) 1. Lightly scuff sand to remove scratches and
a. Painting of Spare Parts. improve adhesion.
1. Ensure a clean surface by wiping with Naphtha 2. Ensure a clean surface by wiping with Naphtha
to remove surface contamination. to remove surface contamination.
CAUTON
CAUION
Do not use strong solvents such as Xylol, Do not use strong solvents such as Xylol,
Toluol or Lacquer Thinner since prolonged
Toluol or Lacquer Thinner since prolonged
exposure can soften or embrittle ABS. exposure can soften or embrittle ABS.
2. After the part is thoroughly dry it is ready 3. Apply a compatible primer - surfacer and
for the lacquer topcoat. Paint must be thinned with sealer.
lacquer thinner and applied as a wet coat to ensure 4. After the part is thoroughly dry it is ready
adhesion. for the topcoat. Paint must be thinned and applied
b.
Touch Up of Previously Painted Parts. as a wet coat to ensure adhesion.
1. Light sanding is acceptable to remove
scratches and repair the surface but care must be NOTE
exercised to maintain the surface texture or grain.
2. Ensure a clean surface by wiping with Naphtha
Acrylic topcoats can be successfully spotted in.
to remove surface contamination.
19-4. EXTERIOR PARTS (Epoxy or Polyurethane
CAUTION
Topcoat)
a. Painting of Spare Parts and Touch Up of Painted
Do not use strong solvents such as Xylol, Parts.
Toluol or Lacquer Thinner since prolonged 1. Lightly scuff sand to remove scratches and
exposure can soften or embrittle ABS. improve adhesion.
2.
Ensure a clean surface by wiping with Naphtha
3. After the part is thoroughly dry it is ready
to remove surface contamination.
for the lacquer topcoat.
Paint must be thinned with
lacquer thinner and applied as a wet coat to ensure
CAUTION
adhesion.
Do not use strong solvents such as Xylol,
NOTE Toluol or Lacquer Thinner since prolonged
exposure can soften or embrittle ABS.
Lacquer paints can be successfully spotted in.
3. Apply a primer compatible with Epoxy or
19-3.
EXTERIOR PARTS (Acrylic Topcoat) Polyurethane topcoat.
a. Painting of Spare Parts. 4. After the part is thoroughly dry it is ready
1.
Lightly scuff sand to remove scratches and for the topcoat.
improve adhesion.
2. Ensure a clean surface by wiping with Naphtha NOTE
to remove surface contamination.
Epoxy or Polyurethane topcoats cannot be
CAUTION
successfully spotted in - finish should be
applied in areas with natural breaks such
Do not use strong solvents such as Xylol, as skin laps or stripe lines.
Toluol or Lacquer Thinner since prolonged
exposure can soften or embrittle ABS. When painting interior and exterior polycarbonate
parts, or where the part material is questionable, a
3. After the part is thoroughly dry it is ready "barrier primer" should be applied prior to the Enam-
el, Lacquer, Epoxy or Polyurethane topcoat.
19-2