Bleeding Brake Mystery.
Discussion
Finally seem to have got the brakes sorted (delayed by Christmas, bad cold and holiday).
In the end after trying numerous combinations of bits from the old cylinder and the new I concluded that the only option was to try some new seals. I got a set of new seals and tripper valve from Rimmers, popped them all in and hey presto it worked fine. Put it on the car and bled the brakes without any problem without any fancy kit or helper (as it should be).
I had intended to change the seals one at a time to see which one was the problem but by then I was so hacked off I just changed them all. (I would have changed them all in the end anyway).
The only thing I can conclude is that there was a problem with the primary seal even though it was "new" and looked OK. (the tipping valve or other seals shouldn't physically be able to let air in) Maybe uit had been stood in stores for years and the seals degraded???. I'll get on to the supplier for comment.
In the end after trying numerous combinations of bits from the old cylinder and the new I concluded that the only option was to try some new seals. I got a set of new seals and tripper valve from Rimmers, popped them all in and hey presto it worked fine. Put it on the car and bled the brakes without any problem without any fancy kit or helper (as it should be).
I had intended to change the seals one at a time to see which one was the problem but by then I was so hacked off I just changed them all. (I would have changed them all in the end anyway).
The only thing I can conclude is that there was a problem with the primary seal even though it was "new" and looked OK. (the tipping valve or other seals shouldn't physically be able to let air in) Maybe uit had been stood in stores for years and the seals degraded???. I'll get on to the supplier for comment.
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