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1Back to top Go down   brake resevoir leak fix  Empty brake resevoir leak fix on Sat Nov 09, 2013 9:39 pm

charlie99

charlie99
VIP
VIP
...well its been happening for a long while
but bit the bullit tody and attempted to fix that fluid leak from the front master cylinder reservoir

 
the problems appear after doing any sort of adjustment or refill to the reservoir

with the reservoir removed I could see some issues
a build up of gunk under the base and some corrosion down the bore (where the seal fits )
brake resevoir leak fix  2013-137
 the base of the plastic likewise

brake resevoir leak fix  2013-138

I thought the best plan was to remove the pitted paint around that base metal section and to clean up the bore of the reservoir into the master cylinder

I guess the buildup of the old brake fluid was acting as a lever with growth as it became wet/dry  again after a slight weep event

I finished off the aluminium plate with some clear coat ...just to seal it up from the environment (but not sure how log this will last if brake fluid gets in there again ) but anyhow you have to try ...eh?

brake resevoir leak fix  2013-142

the old seal was slightly distorted ...(from years of sitting in the same place and the additional corrosion growth )

brake resevoir leak fix  2013-140

replaced

brake resevoir leak fix  2013-141

I sealed the top of the feed tube where it attaches to the base  with a smidgin of 1208 drei bond ...to hopefully act as a last seal before the backing plate

just letting the sealant "go off" before replenishing the fluid and bleeding (by back pressure from the callipers up)

lots of metho was used to clean out that gunk

whilst your in there ...clean up the fluid feed holes down into the master cylinder , the forward (closest to the output ) "equalizer tube " is very important for good brake operation

hope this helps someone

as I had thought my problems were solved when I renewed the master cylinder piston and seals a year or so ago .


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%Obrake resevoir leak fix  Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

2Back to top Go down   brake resevoir leak fix  Empty Re: brake resevoir leak fix on Sat Nov 09, 2013 10:47 pm

smithy

smithy
Life time member
Life time member
Good clean up job mate , that should stop the dribble .


__________________________________________________
87 K100rs : Vin 9462 
86 K100rt : Vin 9901
Naked
98 K1100lt: Vin 8044
    

3Back to top Go down   brake resevoir leak fix  Empty Re: brake resevoir leak fix on Sun Nov 10, 2013 3:32 am

Guest

avatar
Guest
Charlie, do you know the name of the shop that resleeves brake master cylinders. 
I believe it's a shop on the north side of town but haven't picked up their name.
They can bore out the cylinder and insert a new stainless sleeve.

    

4Back to top Go down   brake resevoir leak fix  Empty Re: brake resevoir leak fix on Sun Nov 10, 2013 3:43 am

RicK G

RicK G
admin
admin
There is a guy in Wynnum called Master cylinder exchange service DO NOT use him.  He cost me a lot of money a few years ago and absolutely stuffer the front and rear master cylinder to the point they couldn't be salvaged. Then after the small claims said pay I got nothing at all.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

5Back to top Go down   brake resevoir leak fix  Empty Re: brake resevoir leak fix on Sun Nov 10, 2013 3:52 am

charlie99

charlie99
VIP
VIP
sorry ...no robin... haven't been that desperate yet

I feel that there was enough grunge outside the seal area to confirm the leak point being the seal to the reservoir

I have replaced the piston  as said ...didn't cost that much ...and did a widdle hone of the bore as well which seemed to work well .


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%Obrake resevoir leak fix  Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

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