Mon, 12/12/2011 - 11:34
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Any suggestions? I have seen some rebuild kits for around $65. Is it worth it to try and rebuild it or would it be easier to just replace? There is some corrosion and my mechanic recommended I replace or fix it.
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Mon, 12/12/2011 - 13:05
#2
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hmmm... I know ther is
hmmm... I know ther is corrosion that is causing the leak but I haven't had a chance to give it a good look yet. Bob's BMW listed the "whole" master cyclinder for around $350. I'm guessing once I get in there a lot of it will have to be re-done. Any suggestions on where to look for a rebuild kit?
Mon, 12/12/2011 - 13:26
#3
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I guess rebuild makes sense!!
I guess rebuild makes sense!! BMW Hucky has rebuild kits for 14 and 17mm M/Cs. I'm sure Bob's does too. I hear that Eurotech Motorsports is going out of business...not sure what they have available or if you might get caught in limbo if they ship the wrong thing and you have no one to return it to.
If you find that your M/C is beyond repair, there are companies that resleeve them and of course there are salvage yards as an option.
Wed, 12/14/2011 - 12:56
#4
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Thanks Schrader. I just got
Thanks Schrader. I just got it back from Tom Cutter. He had to rebuild the carbs, replace the float bowls, adjust the valves, re-do the points, replace the spark plugs and wires, fix the internal neutral switch, work on the ignition, replace the battery wiring harness, fix the gear oil leak..... a lot of stuff. I just have to get the turn signals & brake light working again and address the M/C. Maybe I should have bought a new bike!
Wed, 12/14/2011 - 18:30
#5
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to rebuild? or replace?
the answer is you don't know untill you remove the cylinder, disassemble it, clean it, and examine
the bore. How deep is the corrosion?, will light cylinder hone clean it up? or is the pitting too deep for the
new seal to seal reliably? IT IS BRAKES AND A FAILURE IS NOT EXCEPTABLE!
generally replacing is prudent.
there are brake cylinder/caliper rebuilding services but this is reserved for when NEW parts are
no longer available and resleeving is the only alternative - at a cost near that of the formerly
available new part
happy holidays
Thu, 12/15/2011 - 14:31
#6
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Thanks C.Diesel. From the
Thanks C.Diesel. From the outside it doesn't look too bad. In another month or so (maybe a few weeks) the weather will likely be to nasty to ride so I will give it a real good look then. I'm getting my tank and fenders re-painted then too so I'll have the whole think apart.
Happy Holidays!
I'm a re-build kind of guy...I then know that the part came with the bike. But sometimes if the replacement cost is the same as the rebuild cost, it might not make sense. Rebuilding can be problematic, especially if there's internal corrosion which has to be dealt with, plus getting the various rubber bits on the piston was fiddly as I remember. There are tricks, though.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2