Anyone ever rebuild a brake caliper?

[JimBee]

Like abscate said, the hard brake line fitting at the rear calipers on 850's is often impossible to break loose.

But if you follow that line to just in front of the rear wheel it screws into a "splitter". On the 850, those fittings, at the splitter, always crack loose quite easily. A small vice grip can get in there, or use an 11 mm open end or brake line wrench. That gives you the option of getting one from a junk yard car with the line attached, or taking your caliper with the line attached to a shop and have them get it apart—or make you up a new line to use with a new caliper.

You'll lose fluid when you open that line. If you lose too much and the master cylinder reservoir gets too low, you can get air in there and you'll need to bleed the master cylinder, as well as your lines. If you pick up a 10mm x 1 short bolt, you can wrap some teflon tape around it and plug the splitter when you take off the line.

[abscate]

Junkyard. NJ has a few.

Other than that, prevention is best. Replace the fluid ever few years.

It’s not helping with this crappy aftermarket stuff.

I had Fresh brake fluid on replacement in 2016 and both pistons seized solid.

[WhatAmIDoing]

Junkyard. NJ has a few.

Other than that, prevention is best. Replace the fluid ever few years.

It’s not helping with this crappy aftermarket stuff.

I had Fresh brake fluid on replacement in 2016 and both pistons seized solid.

Yes, these rebuilds all seem to be crap. I perpetually have new brake fluid in the system because I replace calipers so much. Last one that went I put on my log splitter, and even the hydraulic force couldn't push the piston back in. Hoping these Centric calipers turn out to be better.