Look up the part number using Max BMW's online parts fiche. Then search for the part number also on the fiche and it will tell you every model that has that part.

Sent from my SM-T813 using Tapatalk

 

Great idea.
However, both Max BMW and the BMW ETK parts catalogue only list the complete calipers. Not feeling like spending that much on replacing serviceable parts that just need a few € worth of rubber rings.

i would start with replacing the piston seals, as these can prevent the piston retracting all the way. I would also clean the piston using a very fine 'wet & dry' grit paper (2000 grit). Then use Brake cleaner to clean everything off - its a great cleaner that evaporates and leaves behind no residue.

The piston seal kit for the front Callipers as available from Motorworks for £20, and the same price for the rear.

https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=5&NU=15&M=70&Ct=HA&SbCt=BA_15_70_HA_40&spPage=2
Front Ref BRA16719
Back Ref BRA51957

For the one in a 10 year job, its worth paying the money for the right parts, rather then cheaper items which may not fit or last as long.

Hmm, brake cleaner gets a no from me, but mostly because I think that toothpaste in combination with isopropylene on a toothbrush is going to be gentler on the pistons, with short alcohols like methylene and propylene disappearing in to thin air quite quickly. Excellent stuff to displace water with and float out undesirable contaminants.

But thanks a ton for the link, I'll see whether I can find someone a bit more local to me to speed up delivery who sells that.

 

Hey,

I couldn't find any info on this in the forum, so I hope I'm actually the first to ask this question:
Does the F800GS use them same brake calipers as the F800ST and F800S? Reason being that my front calipers have started to seize up ( constant light front braking ) and my rear caliper also makes some odd squeaky noises when I'm pushing the bike that seems to be related to the rear brake pad not properly resetting. And no, it's not the rear bearing assembly, I just replaced that.

I can find replacement seals and even pistons for the GS, but finding parts for the S and ST is a bit more difficult. Sure, I could ask my local dealer but if I can avoid paying the "made in bavaria" tax I wouldn't mind, especially since the parts are probably very generic.

Oh, and has anyone tried cleaning the pistons with toothpaste? Seems like exactly the right cleaning agent, since it is mildly abrasive, like a polishing agent, but doesn't contain any oils or other slippery agent that could contaminate either the hydraulic system or the pads and disks.

Thanks in advance,

tengu

i would start with replacing the piston seals, as these can prevent the piston retracting all the way. I would also clean the piston using a very fine 'wet & dry' grit paper (2000 grit). Then use Brake cleaner to clean everything off - its a great cleaner that evaporates and leaves behind no residue.

The piston seal kit for the front Callipers as available from Motorworks for £20, and the same price for the rear.

https://www.motorworks.co.uk/vlive/Shop/Parts.php?T=5&NU=15&M=70&Ct=HA&SbCt=BA_15_70_HA_40&spPage=2
Front Ref BRA16719
Back Ref BRA51957

For the one in a 10 year job, its worth paying the money for the right parts, rather then cheaper items which may not fit or last as long.

 

To update this, in case anyone from europe is looking: I bought my rubber and eventually a set of stainless pistons from powerhouse. Other shops warned of the calipers warping upon being taken apart, mine did not. Don't understand why they would anyway. It was still a rather annoying job to clean 8 caliper cylinders. Would not recommend.

Top tip: If you have the calipers off the bike and suddenly realize that you need to push the pistons out somehow - find an old brake fitting with rubber line, cut the line, screw a bike valve ( french could fit) in to it and put air pressure in to the caliper with a pump.
Alternatively: Drop a small socket in to the piston, then use it to lock an extension for a wrench in place and try to twist the piston. As it turns, it should come out. This does not damage the outside of the piston, if done right - making them serviceable.
Thanks to Delboy's Garage for this idea, if you see this, you're a genius.

 

its not only the callipers warping which cna be an issue, but also sealing them.