Others choose differently, I went ceramic. I don't know who you were asking - I just shared.

 

The pressure only builds in the driver's side. I've replaced the caliper and the hose and the line that go into the block in the rear axle. I'll try cracking the brake line at the master cylinder. I'm going to flush the fluid and refill it in the process.

It has ceramics on it. I think they are Brake Best.

 

Get rid of them

 

I think that Pete possibly has found your problem-the grease. In addition to using very little grease, do not use axle grease. You did not say if you used the grease that is designed for these high heat applications.
Did you clean out the holes that the slide pins go into? Any rust in there will cause problems.


The other issue not yet mentioned in this thread is that certain pads will cause very high braking temperatures. With certain types of caliper pistons, especially non metallic pistons, and with certain types of caliper piston seals, that high heat can deform the seals. These seals act like a piston ring in an engine. If they get too stiff from high heat, the seals then prevent the pistons from retracting when braking pressure is removed. That excessively high heat can also dry out the slide lubrication having the same effect-failure to retract.


From your description of the symptoms, the problem does seem to be hydraulic pressure. If you cannot repair this, your next step would seem to be fabricating a tee fitting with a pressure gauge and temporarily connecting that gauge into your rear brake line.


Some years ago I helped a friend repair a similar problem with his truck-it turned out that after installing new brake parts, he had dropped a caliper while it was attached to the brand new brake hose. The force of that drop had damaged the inside of the rubber hose. So the new hose was holding just enough pressure to drag that brake-he was about ready to buy all new parts again. I apologize for the long post-it mostly does not apply to your problem, but may help someone else with brake problems.


So I suggest that you go buy another new hose for that caliper (in case the factory messed it up), they are relatively cheap. And check those slide pins for too much grease.


Larry

 

Thanks for the replies again. I'm going to get a new caliper again, a new rubber hose, and new pads. What kind of pads should I use if ceramics won't work? I haven't had any luck with semi-metallic in the past. They just haven't lasted for me. Thanks

 

Hawks or EBCs seem to be the way to go. EBC Green Stuffs were good to me for years.