Rear brake caliper was sticking a little so I decided to replace the rotors and pads. (1 Viewer)

[Jdfern]

While changing pads and rotors I had a hard time pressing the caliper piston back in. Took it apart and found corrosion. I tried to smooth it out with emery and crocus cloth but was unable to get it smooth enough and the cylinder was pretty bad too.
So I just ordered a new caliper... funny how repairs snowball.

 

[excessive]

yuck, there is no saving that caliper.

change brake fluid 1x per year

 

[Jdfern]

yuck, there is no saving that caliper.

change brake fluid 1x per year

Good idea, Thanks

 

[nissanh]

I do every 4-5 years. What you have is a neglected brake system.

 

[hoser]

Could've also been a failed outer seal... water intrusion from the brake pad side of the piston.

 

[Jdfern]

Yes the left side was fine, going to flush out the fluid and replace the right caliper. The left side got new seals and boots. What I found amazing was that as bad as the cylinder was, it was still working and not even leaking just slight noise sometimes.

 

[hoser]

If at rest, your inner seal is positioned as shown, the caliper will continue to work until you have no more brake pads left. The rust is coming from the outside in, not inside out. No amount of brake fluid flushes will touch the rusted area.

 

[katit]

If at rest, your inner seal is positioned as shown, the caliper will continue to work until you have no more brake pads left. The rust is coming from the outside in, not inside out. No amount of brake fluid flushes will touch the rusted area.


View attachment 3592564

Yep.. It's more about how much you get into water, etc. Those pistons need to be lubed and covered with rubber boots.