Rear Master Cylinder leaking

[XS 1100 Rick]

Hi on my 78E the MC leaking can these be rebuilt with a kit or need to be replace if so what's the best kit can one put in it and are the MC's all the same from 78-81 or are they different just want to get the proper kit is all and where is a good place to find one ..

Thanks

Rick

[IanDMacDonald]

Yes, the rear MC can be easily rebuilt. Much easier than the front MC actually. I can't recommend any one site specifically, as I just bought one off ebay. And, yes, all the rear MC's in that year range are the same. If you're going to be rebuilding it, might be a good time to switch to a S/S braided brake line, as you'll have to re-bleed the brake lines anyways. My-as-well re-build the caliper if you have not done so already . . .

[crazy steve]

They're not all the same..... The '81 LH and '82 XJ bikes have a 'split' braking system and use different cylinders and brakes. It will also pay to verify that the bore on yours is 1/2" (it will have '1/2' cast into the body) before ordering a kit as I have ran into some that have a 14mm bore. The 1/2" bore is the correct size....

As Ian said, rebuild kits are available from multiple vendors; Georgefix on eBay is one, PartsNMore is another....

[XS 1100 Rick]

Thanks Fellas

Tried Georgiefix's site on Ebay no luck there. I've ordered my petcock kits from him in the pass awesome guy to deal with. I found a kit at Parts N More hopefully its the right one time will tell should have it by the weekend..

[jetmechmarty]

www.georgefixs.com

You might have better luck there.

[mack]

leak

I assume you have the m/c off the bike. I'm not sure where the leak was, you never mentioned it, but I just want to remind you that there is an O ring that should be replaced. It sits in a channel in the m/c body between the reservoir shoulder and the base. The channel needs to be cleaned very well to ensure an adequate seal, same as the similar channel in the calipers which seals around the pistons.