Author Topic: New rear brake caliper seals (Read 2509 times)

Chris · « **on:** 08 April 2013, 10:44:07 pm »

Hey guys,

Replacing my rear cliper seals as part of my ongoing winter (and now spring) mods/upgrades/cleaning/money spending... $:\$

I want to replace them with genuine yamaha ones to avoid any ill fitting etc. It's not something I want to try and "save money on" if you get what I mean.

My question is where to get them. I don't need new pistons as they've cleaned up fine.

I've had a look on ebay but it's so hard to try and figure out which are genuine yamaha parts and which aren't.

Cheers,

Chris

darrsi · « **Reply #1 on:** 08 April 2013, 10:54:43 pm »

Wemoto, or Fowlers of Bristol

Gnasher · « **Reply #2 on:** 08 April 2013, 10:56:15 pm »

Get a kit from a stealer, these are available with or without pistons.

Chris · « **Reply #3 on:** 08 April 2013, 10:58:37 pm »

Quote from: darrsi on 08 April 2013, 10:54:43 pm

Wemoto, or Fowlers of Bristol

Cheers Darrsi,

Will have a look on wemoto, was going to try my local yamaha garage tomorrow too so just trying to get prices. We don't actually have a proper yamaha motorcycle dealer in Shetland. we have a yamaha outboard motor dealer who can get parts for yamaha bikes too so will try them.

Any idea what the part number is??

Chris

His Dudeness · « **Reply #4 on:** 08 April 2013, 11:05:22 pm »

The parts catalogues are in the download section

http://foc-u.co.uk/index.php?action=downloads;cat=2

Chris · « **Reply #5 on:** 08 April 2013, 11:16:15 pm »

Quote from: His Dudeness on 08 April 2013, 11:05:22 pm

The parts catalogues are in the download section

http://foc-u.co.uk/index.php?action=downloads;cat=2

Cheers Dude,

I keep forgetting about that

Chris

His Dudeness · « **Reply #6 on:** 08 April 2013, 11:21:33 pm »

For the 98 bike it's 51L-W0047-00-00. It's probably the same for you bike but you'd want to check it to be sure

Chris · « **Reply #7 on:** 08 April 2013, 11:23:59 pm »

Thanks man

Chris

His Dudeness · « **Reply #8 on:** 08 April 2013, 11:30:44 pm »

It's a handy enough job to do and should keep the caliper working nicely for miles so long and you keep cleaning it every now and then. Did mine about 15,000 miles ago and it still works great

Chris · « **Reply #9 on:** 08 April 2013, 11:37:49 pm »

Ye, got the caliper off and cleaned up already.

One of the pistons was a bit of a bugger to get out but got there in the end. Both dust seals had seen better days and don't think the caliper had ever seen a clean in its life so will keep on top of it from now.

Got a hel braided line for it too so that should help it along now that it's all unsiezed.

Chris

His Dudeness · « **Reply #10 on:** 08 April 2013, 11:40:58 pm »

Nice work

Should make a massive difference

Chris · « **Reply #11 on:** 08 April 2013, 11:44:58 pm »

Couldn't get much worse

haha!

Ye, i'm really looking forward to getting it all back together and trying it out!

Chris

Liroka · « **Reply #12 on:** 09 April 2013, 08:48:54 am »

http://yambits.co.uk/

This is also a canny site for parts, and I can confirm the seals fit perfectly in the rear caliper.

Jezzer · « **Reply #13 on:** 09 April 2013, 10:01:29 am »

Used new seals from Wemoto on front, back and master last year, pain to get the old calliper seals out, used a pin in the end. The replacements fit with no issues and all still works fine. My bike still had the original lines and seals on, the difference was quiet something, especially combined with fitted new lines (from ebay).

darrsi · « **Reply #14 on:** 09 April 2013, 11:20:46 am »

Smear a bit of red rubber grease on the seals before you fit them.

Chris · « **Reply #15 on:** 09 April 2013, 12:25:05 pm »

Thanks for all the help guys.

Ye, was going to put a tiny smear of red rubber grease around the piston sides too to help it slip in, most (if not all of it) will be removed by the seals as it slides in but should help it go in nice and square.

I didn't have any problems getting the old seals out, used a very small flat bladed screw driver and very carefully lifted a part of the seal and it was easy to remove them by just holding the seal between the scewdriver and my thumb. Obviously I was very carefull not to damage the edge of the alloy casting where the seal sits.

Both dust seals were well past it. The main fluid seals looked ok but when I took them out the canals they sit in were pretty furred up with stuff so gave it all a good clean out. Pistons came up almost like new, very slight pitting on the pad edge but nothing on the side walls so won't ruin the new seals.

Going to paint the caliper too as it's looking a bit flakey.

Chris

Chris · « **Reply #16 on:** 09 April 2013, 05:24:49 pm »

Ordered the seals from wemoto today. Went along my local yamaha guy but they wanted over £20 for them.

humbucker88 · « **Reply #17 on:** 09 April 2013, 10:29:19 pm »

Chris, did you split the caliper? also, did you use compressed air to get the pistons out?

Chris · « **Reply #18 on:** 09 April 2013, 10:34:27 pm »

Hey Humbucker88,

Yes I have split the caliper. I know a lot of people advise against it but I am going to reuse the tiny rubber seal between the two halves as it is like new.

I tried the compressed air approach and it freed up one of the pistons but the other was well and truely stuck so I closed off the fluid input hole with a bolt of the same thread and used a grease gun on the bleed nipple to force the second piston out. It worked perfectly. The only thing was that the caliper needed a really good clean out afterwards but I was going to do that anyway. It is much easier to work with the seals and clean it up with the caliper split.

Chris