Rear Break caliper piston
- Thread starter bongskag
- Start date
cables are all new,
its the piston innards I found out its meant to adjust to the position of the piston as the pads wear down, , thats why a rear brake piston costs around £45 , a front can be had for around £15 as it has no gubbins inside! ..
its pretty expensive, £45 for 1 piston , and the rebuild kit is £58 (does both sides) , and I also need new discs while im there , looking at £200 for all the bits. I'd hate to think what it would cost at a garage,
its the piston innards I found out its meant to adjust to the position of the piston as the pads wear down, , thats why a rear brake piston costs around £45 , a front can be had for around £15 as it has no gubbins inside! ..
its pretty expensive, £45 for 1 piston , and the rebuild kit is £58 (does both sides) , and I also need new discs while im there , looking at £200 for all the bits. I'd hate to think what it would cost at a garage,
SupaStu
Member +
The rear piston just screws on to the thread inside the caliper, there's some other bits in there, but you don't need to replace them normally. The caliper kit does replace any rubbery type part tho.
I don't think the piston is £45 should be around £25-30 I think. I've a new one sitting here I bought from Toyota a couple of months ago, part number 47701-16010. Some of the other parts places are charging more I found, I also get a 10% discount from Toyota. Worth asking.
I don't think the piston is £45 should be around £25-30 I think. I've a new one sitting here I bought from Toyota a couple of months ago, part number 47701-16010. Some of the other parts places are charging more I found, I also get a 10% discount from Toyota. Worth asking.
thanks for the info , I found out the thread inside the caliper came out with the piston istself and was siezed , it took mole grips to remove it from inside the caliper!!
I have the new piston now and it obviously came without the threaded insert..
here is a pic of the bit I removed ..
so that part is supposed to live in the caliper itself and not the piston ? just a bit confused as it came out with the piston when I removed it!
I have the new piston now and it obviously came without the threaded insert..
here is a pic of the bit I removed ..
so that part is supposed to live in the caliper itself and not the piston ? just a bit confused as it came out with the piston when I removed it!
looks like you have monged the black bit that covers the spring, it should have little legs sticking out, but they have been straightened, just re bend them. the pistons can be bought from camskill for around £40. its not cheap to rebuild them, but still cheaper than buying new 1's. i have rebuilt a few of these. the new piston should have the female inset already in it. i will try find a pic of what parts should be in it
on the towel we have, the new piston with the female thread inside it, then we have a spring retainer, look at 1 o clock and 7 o clock, there is little tabs sticking out, they clip into the "dog bone". i found if you put the little plunger in, then the tiny spring, then fit the male threaded bit into the spring and spring retainer, then fit all this to the dog bone, slip it in, then fit the circlip. if you want i will take more pics of the sequence to build it. i have a caliper ready to build so i can do a step by step
great info guys , amazing response, rep added .. rwdrev if you could take a series of pics , we could add it to the wiki / how-to section im sure it would be very usefull to people 
and yes I did mash it up when removing .. lost my rag with it ! lol .. I knew it should have came out easily which is why I attacked it. I'm not too upset as it is all part of the learning curve.
I have the new piston and seals.. so all the parts live in the caliper ? , and just the piston screws onto the thread etc ? i'm gonna need a new threaded part as it has damaged the thread as I removed it
and yes I did mash it up when removing .. lost my rag with it ! lol .. I knew it should have came out easily which is why I attacked it. I'm not too upset as it is all part of the learning curve.
I have the new piston and seals.. so all the parts live in the caliper ? , and just the piston screws onto the thread etc ? i'm gonna need a new threaded part as it has damaged the thread as I removed it
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its coming up on the epc , and various sites as $7 ? doesnt sound too sad .. I'm gonna have to get to a toyota branch to order it , im sure idworkz or camskill would pull my pants down on the price of one of these.. not exactly a service item . I left the rest of the cable pull mechanism inside the caliper behind the circlip, I dont a circlip pliers to go that deep anyway, the sliding pins look all good tho, a few seals were split ,
il see what i can sort out tomoz night. get yourself some good circlip pliers, makes thinks alot easyer. if you want i can rebuild these for you if you supply the parts? i got a spare caliper that i could use for spares.
this is a pair i done for mine after it sat for over a year
this is a pair i done for mine after it sat for over a year
many thanks yet again . it wont let me rep you anymore ! I see what you mean about the circlip pliers, mine are too short to get down into the caliper ! I will have to invest in a good set, Im getting there. Ive bought a second hand rear caliper to use for spares as I cannot get hold of the part I need,
haha, thats ok. yeah, a nice long pair do the job nicely. nothing too clumsy tho, cos its tight (lyk a tiger....lol) just to add, done use too much grease in the assembly, when putting the handbrake pin in,i used too much and it kept pushing back out, cos the air wasnt escaping, and the pin wasnt sitting correctly.
another tip, put parts (top left too right) 6 to 11 all together, then slip in then fit the circlip (if you get me?)
another tip, put parts (top left too right) 6 to 11 all together, then slip in then fit the circlip (if you get me?)
yep , many thanks again ..
got an old caliper off Fleabay for a 5er , I unscrewed the piston as you said and yes the handbrake pin screw thingy stayed in the caliper this time instead of coming out with the piston like last time. just waiting for my circlip pliers to arrive so I can remove the rest to use on my caliper. slowly getting the idea, I'll use brake fluid to lube it up so the grease doesn't block the bleed nipple.
I can see why people just buy a new caliper most of the time. but I'd rather learn how it works to save money in the future ,
got an old caliper off Fleabay for a 5er , I unscrewed the piston as you said and yes the handbrake pin screw thingy stayed in the caliper this time instead of coming out with the piston like last time. just waiting for my circlip pliers to arrive so I can remove the rest to use on my caliper. slowly getting the idea, I'll use brake fluid to lube it up so the grease doesn't block the bleed nipple.
I can see why people just buy a new caliper most of the time. but I'd rather learn how it works to save money in the future ,
got it all done , handbrake works fine now , when I took the other side apart , the handbrake mechanism was popped out of the circlip too , so I just put it all back together and clipped it behind the circlip..
thanks for all the help .. even gave them a paint while they were all apart!
thanks for all the help .. even gave them a paint while they were all apart!
yeh the feeling of fixing yourself beats the feeling of getting it done by paying someone to do it , just wish I replaced them caps that go on the outside there all dented where they have been pulled off many times . and also the heatshields that go behind the discs too . they had surface rust..