rear caliper slide pin bolt question

It's been a while since I've done my rear sliding pins, but a quick review of the NutzAboutBolts video on the subject shows that yes, there are little rubber grommets are the far end (opposite the bolt end) of the sliding pins.

 

Yes, and they aren’t simply grommets. It’s more like a hard plastic sleeve, as I recall. Pretty sure you want to replace those bolts with OEM

 

Yes, you should use them on your new pins.

As shown in this photo on the ends

 

When I worked on our old 2010 it was missing the rubber bits.

I've also worked on other owners Prii and found the same to be true.

I'd get an OEM bolt to replace the rusty one.

 

The little rubber rings at the ends of mine were all completely missing when I lubed the slide pins at 156k.
Only 1 of the boots were in bad shape.

 

rears should all be the same, but the fronts are different pins, so the boots are maybe different.

maybe one is from the front?

 

uggg

I think we have all been there.

Not sure if you have any local places to get one, or if any parts cars are around.

 

Some silicon brake lubes are not rubber compatible, cause rubber to swell. I've used Sil-Glyde Brake Lubricant a couple of times now, for the front and rear pins, works and no problems. There's also a Toyota grease: it's a little elusive, but check with local dealership.

Misalignment of the rear brake caliper piston is another bugbear: spoke pattern on the piston face HAS to be X oriented, and WELL seated thus. Do your best, take a short test drive, apply/release parking brake, raise rear and verify wheels are relatively free spinning.

 

As far as the rusting, I think very common in salted road areas.

Just about 5 years in PA and my rear were the ones in the pic above.

I think I caught it in time.
For the previous 5 years I was going to dealer for service, state inspections,
and just this past summer decided to do my own oil changes etc.

From reading here on PC, I knew it was time for a brake inspection and ohh boy
any more time and it would have had issues.

So glad to hear that you got it out!

 

Toyota USA says tri-yearly or 30K miles. Toyota Canada says bi-yearly or 32K kms IIRC, but I've been going by the US schedule, especially considering our ridiculously low miles. I think the main thing is to do it, regularly , not wait till it's too late.

 

I think if they're neglected long enough, and/or someone lubed with bad stuff, say anti-seize. I believe there's no rubber collars on the front pins? That's a plus, because some lubes will swell rubber, one Permatex lube IIRC.

The fronts don't have the parking brake complication, so for that reason are harder to screw up, less likely to be running hot for a protracted time, which maybe means the pin are less prone to dry up: hot brakes, constantly, maybe bakes the lube on the pins?

 

I think you're right; this Repair Manual picture seems to suggest something on the lower (front brake) pin:



I guess when you can't remember, it's just about time to revisit them, lol.