Greg,
I have used silicon brake fluid for about 12 years. A little over a year ago I
replaced all the seals in my brake and slave cylinders and could not get any
pressure to hold. Then was told that there are no longer any seals for use
with silicon. Do not know if you are having the same problem.
Bob Kitterer - witha brakeless bugeye.
1960 Austin Healey Sprite (Mk IV in disguise) - in storage
1966 Austin Healey Sprite Mk III (Trevor) - still in boxes - in storage
On Nov 5, 2010, at 12:22 PM, Greg Higgins wrote:
> I pulled the M/C from my 63 sprite MKII, it was weeping a little bit and
> dripping onto the rubber floor mat. I took everything apart, put all new
> rubber seals in then bench bled the M/C. I tried bleeding the system with my 1
> man bleeder, no luck. I had my wife pump the pedal, with seven pumps I had a
> hard pedal. Once she took her foot off the pedal, the pressure was gone.
>
> I took everything apart again, I figured I may have pooched a rubber seal when
> I put the M/C back together. I installed another new rebuild kit, did
> everything again as mentioned, I still have the same problem.
>
> Anyone have any ideas? I have never had a problem bleeding the M/C with this
> car. The only thing different, I went from using synthetic dot 5 to synthetic
> dot 4?
>
> I was looking at the M/C diagram in my shop manual, it show a rubber thick
> washer called a valve washer that goes into the bore first, mine has never had
> one and has always worked.
>
> I'm going to try a 3rd time, will put the value washer in and see what
> happens, failing that , I'll throw a match to the bastard.
>
> Thanks for any info
>
> Greg Higgins 63sprite
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