lukasbasic

i need to replace front caliper, seized up. don't feel like fixing them.
what parts beyond the calipers would you switch?
caliper is here:
https://www.rockauto.com/en/moreinfo...sn=858&jsn=858
(would you get this one?)
any other components I need? holding pins? brake bleeder? caliper pins?
i'm pretty new to doing this. thanks for all answers

Lexus4321

The pics on RA (your link) show's it come with new slide pins and spring retainer.
Maybe inspect your brake lines and replace as needed.

IanB2

If you're having to replace calipers frequently like I did, you might want to look at switching to the '10-13 spec GX460 front brakes, calipers and rotors required, pads are the same. It's been a few years without a seized caliper now, whereas I seemed to be replacing one a year on average previously. Everything bolts right up.

Lexus4321

Whoa. Seizing up annually? I am still running the OEM's from 2006. Your issue seems odd, why were they seizing up annually? Was it the same or different brand each time?

I'll probably seek out some GX calipers from junkyard and have them re-built, in preparation to replace my originals.

cssnms

I've not had any luck putting on non OEM calipers. They just didnt last long. Sucked it up and went back with OEM

Lexus4321

Which brands though?

GX470 front brakes are too small. The better fix is to do it right/better.
As example:
https://www.rr-racing.com/RR-Racing-...gx4fbk0002.htm

tz693

Get a coated one. If it doesn't come with guide pins, get a pair of guide pins too.

Lexus4321

Or G2 epoxy them before install.

IanB2

Maybe a slight exaggeration, lol. I could visually tell that one of the front calipers had been replaced when we bought the truck...8 years ago already, wow. I've replaced another 2-3 with reman's and got sick of the issues, and then last time went with the GX460 upgrade, which has been all good so far.

kamlung

iTrader: (8)

i did the GX460 calipers earlier this year. if i recall correctly you need the 460 rotors too...

IanB2

That's correct, rotors and calipers required, '10-13 GX460 spec.

lukasbasic

thank you for all the answers.
in terms of replacing the calipers (and i watched like 10 youtube videos)
i just uncrew the fluid line, at which point it will start dripping slowly, screw it into new caliper, and de-air via opening valve and pumping pedal, correct?
or do you actually clamp the fluid line off in addition?
is there any torque for the bleed valve, or just 'snug' ?

Lexus4321

I use a small brake line suction tool to suck fluid out via the bleeder.

Your method will work, need two people though. Open bleeder, have someone press brake pedal EZ to the floor, and then you close the bleeder before they let off the pedal, repeat until your master brake reservoir gets to the low side, refill with fresh brake fluid. If your brakes have not been bled in a long time then repeat the bleed process on the other 3 corners, etc.

Yes, the bleeder is a hand snug, nothing crazy there. There is a torque spec for it (8ft-lb), but hand snug works. After all the work is done, start it, pump brakes a few times to seat the pads, then re-check fluid reservoir.

Hint: when the line comes out of the caliper put the end into a ziplock bag fast so the end of the line is in the bottom of the bag, rubberband it tight, etc. If some fluid pools in the bag it will cover end of the fitting so air will not run up in the line. Install it "fast", bleed the caliper.

Waynegro

After 165k one of my caliper pistons finally froze. I ended up going with a set of API 460 calipers and Akebono rotors and pads new fluid.

Lexus4321

I have to ask a couple of questions about this.

1) are you in a high RH area, 50%+. WA is usually high RH?
2) how many times have you pulled fresh fluid down to the caliper?