C70 Coupe L5-2.3L Turbo VIN 53 B5234T3 (2001)
Color patches in the paint
Cause general
Old paint.
Badly mixed paint.
Paint that has been in the spray bowl for too long.
Incorrect amount of hardener.
Incorrect viscosity or thinner.
Incorrect air pressure.
Mixture of different makes.
Cause metallic
Metallic too dark - base metallic sprayed too wet.
Metallic too light - base metallic sprayed too dry.
Action
Sand down the color coat and repaint. Use P 600 wet sandpaper.
Adjust the shade carefully through a spray test.
Color run, drops
Cause
Paint viscosity too low.
Color coat sprayed too thickly in some places.
Too short drying times between applications.
Corrective action, metallic paint
Remove the paint run carefully with a razor blade.
Sand lightly with P 1200 sandpaper and polish.
If this does not give satisfactory result, polish and paint the whole area.
Corrective action, non metallic paint
Carefully remove the paint run with a razor blade.
Sand lightly with P1200 sandpaper and polish.
Dirt in paint
Cause
Dirt particles in the air in the spray box (dirty intake filter).
Inappropriate work clothing.
Poor cleaning.
Dirt in the paint.
Badly cleaned paint filter.
Old paint.
Contaminated spray air.
Action
Trapped particles which are not acceptable to the customer are sanded and polished.
Respraying should only occur if sanding and polishing does not give a result and if less dust can be guaranteed when repainting.
Orange peel, matt paint
Cause
Thinner evaporated too quickly.
Incorrect viscosity (too thick)
Humidity in the spray box too high
Incorrect spray pressure
Coat too thick.
Temperature difference paint and surface.
Uneven drying.
Action
Sand the color coat with P 400 or P 600 sandpaper until orange peel disappears.
Polish with polishing paste and polish.
If this is not successful repainting is necessary.
