How do you rebuild a brake caliper on a 1994 Chevy Lumina?
First let me say that braking system is a vital system that
should never be short cut. I don't believe that a person should
work on this system unless they are trained or have experience
doing these type repairs. You can buy rebuilt calipers now so
inexpensive many garages no longer do these type service at their
shops.They prefer buy and install these items. Now with the
answer.First you will remove the calipers and drain fliud from each
caliper. Put plastic plugs on brake lines as not to lose fluid and
introduce air in to Master Cylinder. Next push caliper pistons out
of caliper bores and careful not to drop or scratch piston surface.
Next remove old seals from caliper bores. Next clean bores with
soapy water and brass brush.Next clean caliper pistons same way.
Make sure all surface are dry and clean before assembly. Next use
brake assembly lube to coat all surfaces in caliper bore and the
surface of the pistons that are in the bore. Next place the new
rubber seals in cailper bore with assembly lube and place dust boot
on caliper piston. Insert piston into bore and push slow and even
into bore until they reach bottom. Stretch dust boot over lip on
cailper. You are now ready to reinstall and bleed brake system.
Please heed my earlier warning if any doubt of you ability to
perform this repair please take to a experience person for