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

[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.

 

[jeetS]

I can't find any listing for rear calipers... What are you guys using these days?

2000 Landcruiser

 

[Jdfern]

I used Toyota part #47730-60101 (right) it was about $200 for the one that was toast I rebuilt the other using the kit from Toyota.
Left is 47750-60101

 

[Jdfern]

 

[Hokie LX]

You can buy Toyota ones but they've gotten expensive. Napa or Centric remans are usually my go-to.

 

[Jack90210]

I see that the caliper description (on the Ourisman page above) says "new," but are they really new, or are they factory-rebuilt?

 

[Jdfern]

I see that the caliper description (on the Ourisman page above) says "new," but are they really new, or are they factory-rebuilt?

I’m pretty sure they are new. You can go to their website and ask a question online, they are pretty good at answering usually within hours. https://toyotaparts.ourismantoyotaofrichmond.com/

Shop OEM Toyota Parts Online | Ourisman Toyota Parts

Find Genuine OEM Toyota Parts and Accessories When You Shop Online. This Toyota Parts Catalog Includes Discounted Quality Parts You Can Trust To Perfectly Fit Your Vehicle!

toyotaparts.ourismantoyotaofrichmond.com

 

[J1000]

I just did this too and went with Powerstop remans in powder coat red, couldn't resist: https://amzn.to/4ipKyZH

I also use Ford Motorcraft PM-20 Dot-4 LV brake fluid. I actually have it in all my cars. Was recommended it by a racecar friend years ago who used it in his Spec Miata, Datsun Z, and all his customer's racecars. It is low moisture absorbing so it lasts longer too: https://amzn.to/41lm4tE

 

[2001LC]

Toyota remanufactured parts, have part number ending in -84.
The remans, do not come with mounting plate (AKA torque plate). New do! Making new the better deal.

One of the issues with aftermarket calipers. Angle of seat of bleeder port. Often OME bleeder will not seat in them.

Caliper piston that rusty, is was a failed piston boot.

The fitting kit also needs replacing if any rust or damage. As do the shims and wear indicators.
The rears have slide pins, which should be lightly greased. Pins fit into mounting plate and bolt to caliper. They have boots, that should be replaced every pad change.