Ето един сайт,Павка:
http://www.ehow.com/how_7706748_restore-wood-steering-wheel.htmlInstructions1 Brush the wood stripper onto the steering wheel following the directions on the packaging. Most applications use a paintbrush to apply the stripper to the material. Allow the stripper to set on the steering wheel so it penetrates into the wood.
2 Rub stripping pads over the surface of the steering wheel to pull up the existing finish. Rub the pads over the steering wheel in a manner similar to sanding while paying close attention to the corners and grooves. Clean the steering wheel with soapy water and a sponge to remove any residual chemicals.
3 Fill any cracks or crevasses with a stainable wood putty using a putty knife to press the material into the cracks. Drag the putty knife over the surface of the cracks to smooth out the top of the repair.
4 Sand the steering wheel lightly with 220-grit sandpaper to remove any rough spots or raised areas.
5 Apply a wood lacquer or stain over the steering wheel. A stain that incorporates a lacquer provides the color desired while finishing the steering wheel with a high-gloss sheen.
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Там в точка 3 предлагат пукнатините да се запълнят с "Wood putty".
Това е някаква паста, пълнеж за дърво.
Чичо Гугъл казва доста по въпроса.