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Randy,
You can easily check them by using compressed air and by inserting a piece of wood where the pads/rotor should to prevent the pistons to falling off.If the pistons move freely you are on a good way!About the repaint there is two types :
the easy one to clean the caliper as better as you can , sand it lightly with 320 grit paper to don't paint the brake pad area (around the pistons) and to apply by brush a suitable brake color by foliatec as an example.The second is far more complicated as you have to remove the brake pad plates (these bolts are often serious rusted out) , to remove the x-over pipes and the bleeders then to put brake bleeders in the 5 outlets of each caliper , mask them and send the caliper(s),and brake pad plates to media blasting.After that you can have them powdercoated or professionally painted by a two stage auto paint.After that you replace the dust seals and maybe the piston seals (if they are soft and not cracked don't replace them).
P.S. are they 86 calipers ? look inside the caliper halves near the pistons area and you should see two digits in a circle it is the production year : 00 for 2000 model.
Rgds,
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Jim Andritsakos
74 1303 GL (project)
75 181 ex bundeswehr / 85 T3 Panel
86 T3 Syncro ambulance / 87 T3 Syncro doubledoor 16
89 T3 Syncro panel
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