Touch-Up; Repair Of Dents - Cessna 177 SERIES Service Manual

c. Aircraft which will have a stripe only configura- defects should be sanded with 400 grit and followed by
tion shall be masked, cleaned, and primed, in stripe 600 grit sand paper. Avoid, if possible, sanding thorough
area only. the primer. If the primer is penetrated over an area 1/2
d. If the base coat is not over 72 hours old, the inch square or larger, repriming is necessary. Avoid
stripe area does not require sanding. If sanding is spraying primer on the adjacent paint as much as pos-
necessary because of age or to remove surface de- sible. Since urethane finishes cannot be spotted in,
fects, use 400 grit or 600 grit sand paper. Course paper repairs should be in sections extending to skin laps or
will leave sand marks which will decrease gloss and stripe lines.
depth of gloss of the finish. The use of power sanders a. Dry overspray and rough areas may be compound-
should be held to a minimum. If used, exercise care ed out with DuPont 808 rubbing compound.
to preclude sanding thorough the white base coat. Wipe
b. Grease, bug stains, etc., may be removed from
surface to be striped with a tack cloth and check all painted surfaces with DX440 Wax and Grease Remover
tapes. or Imperial Cleaner. Klad Polish may be used on bare
e. Stripe colors on Enflex III base coat will be aluminum to remove stains, oxides, etc..
Enflex III, and Imron base coat will be Imron c. Rework areas, where paint or primer removal is
Enamel. Mix as outlined in paragraph 19-9. required, may be stripped with Strypeeze Paint Re-
f. Painting of the stripe should be done with 2 or 3
mover. All traces of stripper must be removed before
wet even coats. Dry coats will not reflow, and will refinishing.
leave a grainy appearance. Strips may be force
dried or air dried. Film thickness of a stripe is ap-
19-13. REPAIR OF DENTS.
proximately 1.0 mil. a. To repair dents, use White Streak Filler or equiv-
g. Do not remove masking tape and paper until the alent. Mix White Streak in the correct proportion as
paint has dried to a 'dry to touch' condition. Care recommended by the manufacturer.
should be exercised in removal of the masking to pre-
b. Do not apply White Streak Filler over paint. All
vent damage to the finish.
paint shall be removed in the repair area and the alu-
h. Modified urethane finishes are sensitive to mois- minum surface sanded lightly to increase adhesion.
ture, therefore, should be stored out of rain until cured. Apply the White Streak to a level, slightly above the
surrounding skin. After drying for 10 to 15 minutes,
19-12. TOUCH-UP. sand the filler flush with the skin surface, using care
When necessary to touch up or refinish an area, the to feather the edges.
NOTE
Application of a topcoat thickness is excess of 5.0
mils, requires a control surface balance check.
SHOP NOTES:
Change 8 19 5 (19-6 blank)