supra steveo Posted January 6, 2011 Share Posted January 6, 2011 having a few problems with a set of UK calipers ( well just 1 caliper really) i bought a while back, the two halves of one of the calipers seems to be stuck together by the pad pins , can i just smack it with a hammer to loosen it off ? any way i need to start the referb on them properly, so what other things should i be looking out for and changing ? ive already got a front seal replacement kit, just i need to buy the rear one now and then i think the rear calipers are good to be sand blasted and then powder coated black will be needing some oem discs too would like some nice looking drilled / grooved discs but ive been told to I should stick with toyota's oem discs so i am taking the advice below the pictures so far if you can spot anything i need to get then let me know and if you have the part number even better cheers Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted January 6, 2011 Share Posted January 6, 2011 Yeah just get a punch and knock the pins out, you can buy them new from Toyota for pennies mate. Also inbetween the 2 caliper halves theres a couple of O rings, make sure theyre included in the refurb kit. Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 6, 2011 Share Posted January 6, 2011 You can't buy the seals that go between the 2 halves from Toyota They do not come in the refurb kits. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted January 6, 2011 Share Posted January 6, 2011 Bit of an oversight there... Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 6, 2011 Share Posted January 6, 2011 (edited) If you are splitting them its best to get them chemically stripped then media blasted, also check your powder coaters know what there doing and blank off all the threads and carefully mask up the piston bores and mating faces. Edited January 6, 2011 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
BOB B Posted January 6, 2011 Share Posted January 6, 2011 If you go to most car accessory shops, or even DIY shops, you should be able to get an "O" ring that fits, I did and have had no problems. Quote Link to comment Share on other sites More sharing options...
bignum Posted January 7, 2011 Share Posted January 7, 2011 I wouldn`t have seperated them, theres no need. Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 7, 2011 Share Posted January 7, 2011 If you go to most car accessory shops, or even DIY shops, you should be able to get an "O" ring that fits, I did and have had no problems. You'll need to make sure it'll cope with high temps and i'd have thought there would be differant o ring materials for differant applications. I personally wouldn't risk using an o ring unless i new it was able to cope with the varying heat cycle they go through. Quote Link to comment Share on other sites More sharing options...
supra steveo Posted January 17, 2011 Author Share Posted January 17, 2011 I wouldn`t have seperated them, theres no need. i am getting them powder coated i just thought it would make the job easier You can't buy the seals that go between the 2 halves from Toyota They do not come in the refurb kits. been in touch with chris wilson and he can get hold of them Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 17, 2011 Share Posted January 17, 2011 been in touch with chris wilson and he can get hold of them They are available just not via Toyota Quote Link to comment Share on other sites More sharing options...
supra steveo Posted January 17, 2011 Author Share Posted January 17, 2011 ah ok mate, ive sorted the caliper that was stuck i had to cut the pins in half and the rear half of the caliper looks buggered, the pins wont budge so ive bought the rear part off someone who did a brake referb and the front part of the caliper wrecked on him bargain, stroke of luck it was the same caliper Quote Link to comment Share on other sites More sharing options...
supra steveo Posted January 31, 2011 Author Share Posted January 31, 2011 right guys today i picked up the center caliper seals that chris wilson sent me now i just need to get the pistons out then give them a bloody good scrub 1st question how do i get the pistons out ? 2nd question as these pistons are honking can i hammerite inside the piston and the bit that touches the pads ? Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 31, 2011 Share Posted January 31, 2011 (edited) I used compressed air and carefully blew them out, i did this whilst both halves were still bolted together and put a piece of wood between the pistons. Or wrap some masking tape or something similar round the end of the piston where the outer seal fits then use pipe grips, twist and pull slowly and they should come out. Edited January 31, 2011 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
supra steveo Posted January 31, 2011 Author Share Posted January 31, 2011 cool buddy also got another one ive been to toyota first too and they said they do not supply the bolts used to hold the two halves of the caliper together so what has everyone else used ? Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 31, 2011 Share Posted January 31, 2011 I used the ones that the caliper came with Quote Link to comment Share on other sites More sharing options...
supra steveo Posted January 31, 2011 Author Share Posted January 31, 2011 oh right just i had heard they were 1 use bolts Quote Link to comment Share on other sites More sharing options...
Dnk Posted January 31, 2011 Share Posted January 31, 2011 oh right just i had heard they were 1 use bolts Not as far as im aware, i've done 3 complete sets of UK calipers with no dramas using the same bolts Quote Link to comment Share on other sites More sharing options...
supra steveo Posted February 3, 2011 Author Share Posted February 3, 2011 (edited) just a wee update: i am looking for a place to acid dip them on the weekend then i will spray them with hammerite smooth spray think i am going to hammerite the top of the piston too ? is that a good idea , they are honkin at the moment just gave the pistons a little buff with the dremmel having a few problems getting the piston out of the outside part of the front calipers any ideas ? Edited February 3, 2011 by supra steveo (see edit history) Quote Link to comment Share on other sites More sharing options...
bodilx6 Posted February 4, 2011 Share Posted February 4, 2011 I just did mine with normal cleaning agent. No problems there. Or you can jus buy new pistons. They are not very expensive as far as I remember. Did you find out about the caliper? Isn't there something else binding the two halves togeather than the "pad pins"? Mine were firmly bonded even though everything was out. When I refurbished the calipers, taking them apart looked like nothing I would want to embark on as well as they ended up looking quite nice anyway on all visible areas http://idisk.me.com/stefanbovien/public/brakes/fronts_done.jpg Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 4, 2011 Share Posted February 4, 2011 Put new pistons in, they are chrome plated, so acid dipping is no good at all. You should really get the pistons almost all the way out BEFORE removing the calipers from the hydraulic system, using the pedal to slowly push them out and a second person to lever them so they come out evenly. Obviously you do this initially with no pads, and finally with the caliper off the disc itself. Without the right tools ( a proper brake piston clamp of the right size), getting them out off the car with no hydraulic or air supply can be a nightmare. Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted February 4, 2011 Share Posted February 4, 2011 I don't think ordinary O rings are meant to be used in brake components. I'm fairly sure the material they are made from is not suitable and degrades prematurely. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 4, 2011 Share Posted February 4, 2011 I don't think ordinary O rings are meant to be used in brake components. I'm fairly sure the material they are made from is not suitable and degrades prematurely. They aren't and the correct caliper half seals are square section, not round. This thread is frightening the hell out of me.... Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted February 4, 2011 Share Posted February 4, 2011 (edited) BOO!! Edited February 4, 2011 by pedrosixfour (see edit history) Quote Link to comment Share on other sites More sharing options...
supra steveo Posted February 4, 2011 Author Share Posted February 4, 2011 They aren't and the correct caliper half seals are square section, not round. This thread is frightening the hell out of me.... i hope not , i bought the half caliper seals off you, i bought the rear seal caliper repair kit yesterday since you didnt have any chris but i needed it anyway ,how much are caliper pistons chris ? looking for a full set too , this is getting bloody expensive now Quote Link to comment Share on other sites More sharing options...
Dnk Posted February 4, 2011 Share Posted February 4, 2011 Pistons must be getting on for £20 each inc vat by now. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.