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Brake bleeding

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harri183
Custard Cream
Custard Cream
Posts: 785
Joined: 20th Feb 2013
Location: N Yorkshire

Brake bleeding

#1 PostAuthor: harri183 » Fri Apr 30, 2021 3:50 pm

New repro calliper and pipe fitted but can’t bleed it up as it’s sucking air into the system anyone had similar problems can only assume it’s calliper or the pipe all was working before. Cheers

weaver
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Posts: 766
Joined: 15th Nov 2011
Location: merseyside

Re: Brake bleeding

#2 PostAuthor: weaver » Fri Apr 30, 2021 5:50 pm

make sure your not opening the nipple too far this can let air into the system.

kev edwards
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Posts: 2148
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Location: leverington UK

Re: Brake bleeding

#3 PostAuthor: kev edwards » Fri Apr 30, 2021 7:58 pm

Put a couple of twist of ptfe tape on the bleed nipple threads to stop the air getting in.

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CAT3
100Club
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Posts: 445
Joined: 20th Jun 2011
Location: South Manchester

Re: Brake bleeding

#4 PostAuthor: CAT3 » Sat May 01, 2021 9:34 am

What have you replaced, pipe wise, all three sections (i.e. solid pipe & two flexible hoses) or just the flexible sections, or is it just one, flexible hose ?

If it's the original style set-up, check all the pipe/hose joints. I have heard some aftermarket parts are not a good fit, either in the caliper or pipe to pipe/hose joints.
Also, have you used new copper washers or at least annealed the old copper washers ?


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