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Post by sidewaysjas on Jan 24, 2015 21:48:40 GMT 1
Hi Guys
Heres a question for you technical minded people. I have just finished replacing all the brake parts on my van and am trying to bleed the fluid through, but it seems very reluctant to start coming through. On further investigaton I have found the following; with the mastercylinder clamped in the vice and slightly tipped over, the plunger in the end was pushed in (simulating the peddle being pushed) and fluid dribbled out of the rear circuit straight away, but you had to push it alot further in before any came out of the front circuit. Is this correct ? It seems like to peddle would be pushed half way down before anything happens? I have replaced everthing except the mastercylinder which the previous onwer said they had already done.
Jason bemused !
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Post by bimmerbrother on Jan 24, 2015 23:24:06 GMT 1
1. Did you fill the master cilinder with fluid before putting on the reservoir? It's almost impossible to bleed the air from that. It just goes back and forth. 2. Are you sure the seals in the master are not cracked or worn? 3. Is it assembled in the right order, so it can suck oil from the reservoir?
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Post by sidewaysjas on Jan 24, 2015 23:44:14 GMT 1
Mastercylinder is supposed to be 'new' fitted by previous owner, but I may strip it and have a look. Its got a bolt in the bottom which you appear to be able to bleed air out of the mastercylinder with. Going to have another try tomorrow, otherwise its all coming apart again. Also got a pressure bleeding kit on the way for Tuesday so that might help.
Jas
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Post by bimmerbrother on Jan 25, 2015 22:08:55 GMT 1
A pressure bleeder is a good idea. Being able to push the pedal all the way when starting to bleed is not such a good idea, the -2 in1- piston in your master cilinder reaches places it's never been and that may damage the seals. The bolt in the bottom of the cilinder is NOT for bleeding. This bolt seperates the front and rear of the "2 in 1" piston, or better; it secures the maximum travel of the piston.
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