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HELP brake Problem
Kev99 - 8/7/16 at 05:22 PM

Hi all anyone out there that can give me an answer out there to the problem Im getting

Breaks are binding up but when u release the fluid pressure from a brake nipple there back to being free again

Am i right in thinking brake master cylinder problem or could it be something else?

Need this sorting ASAP as got Rockingham on monday

[Edited on 9-7-16 by Kev99]

Nickp - 8/7/16 at 05:35 PM

If it's all of the BRAKES, then yes I'd say master cylinder.

mark chandler - 8/7/16 at 05:35 PM

I,m at Rockingham as well, shorten the master cylinder pushrod, the piston is not coming back far enough to release the pressure, it needs to pass over the hole to the reservoir.

See you Monday

adithorp - 8/7/16 at 05:45 PM

quote:
Originally posted by mark chandler
I,m at Rockingham as well, shorten the master cylinder pushrod, the piston is not coming back far enough to release the pressure, it needs to pass over the hole to the reservoir.

See you Monday


That's the most likely cause.

You need slight free play in the push rod or it'll hold residual pressure

Kev99 - 8/7/16 at 05:50 PM

There is loads of free play between the push rod to the master cylinder

and yes its all the brakes from what i can tell ATM went on me today at blyton

Its OK at start but just gets worse the more u use the breaks that's why i was thinking master cylinder

[Edited on 9-7-16 by Kev99]

hizzi - 8/7/16 at 06:13 PM

master cylinder push rod or i have seen it with hydraulic handbrakes as well

mark chandler - 8/7/16 at 06:15 PM

Plenty of free play but....

If you peer into the cylinder is the piston returning or is there a build up of sludge stopping it's return.

Take it a part and give it a good clean, little bit of rust can be removed with fine wet and dry, do not drag it up and down but twist.

If the piston is free to return then start looking at collapsed brake lines acting as 1 way valves.

[Edited on 8/7/16 by mark chandler]

Kev99 - 9/7/16 at 08:38 AM

quote:

Text If you peer into the cylinder is the piston returning or is there a build up of sludge stopping it's return.



yup this is what it was a tiny stone had gotten itself in there
Thanks for the quick reply's as always

See u Monday mark hope there weathers dry

Kev......

02GF74 - 9/7/16 at 09:16 AM

quote:
Originally posted by Kev99
quote:

Text If you peer into the cylinder is the piston returning or is there a build up of sludge stopping it's return.



yup this is what it was a tiny stone had gotten itself in there
Thanks for the quick reply's as always

See u Monday mark hope there weathers dry

Kev......


A tiny stone found its way inside the master cylinder - how is that possible??!?!"?"??

Anyweighs, you have soughted you're break problem, now time to by a dictionary.

AdrianH - 9/7/16 at 02:43 PM

I would suggest he meant a tiny stone had gotten into where the push rod is in the end of te MC.

Adrian

02GF74 - 9/7/16 at 03:46 PM

yes. makes sense