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A right melon scratcher about brakes


 
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mrspud
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Joined: 29 Nov 2020
Posts: 11
Location: Edinburgh

PostPosted: Thu Dec 16, 2021 11:32    Post subject: A right melon scratcher about brakes Reply with quote

Howdy again folks. Well todays the exact day 10 years past when I bought my money pit....and it came up with a doozie by way of thanks.
Lifted bonnet to check fluids - not been doing many miles in last years - and the brake fluid had dropped from High to Low level in resevoir and had pulled the expanding rubber bellow down with it - so there was must have been a vacuum pull. Considering it was checked a week past and only done 1 trip of 27 miles since then, it was alarming.
Whats been done so far? Well it's a brand new master cylinder (2 years), new front pipes (1 year) and new rear pipes (about 4 months) from wheels to half way along chassis and fitted by mates garage (they have lifts!). Both rear discs n pads n calipers changed 5000 miles past they (are gubbed!)
I know they had trouble bleeding despite me telling them to bleed the load sensor valve first which they ignored for 2 hours before calling me - clowns! So all bled and back on the road - but tbh brakes were never brill on this - always a low pedal.
So sudden/massive drop in fluid and under I went - nice dry day and what did I find? NOTHING! Not a bl**dy drop or sign of fluid anywhere - even popped the master cyl to check servo - nothing, inside cab at brake pedal pivot - dry as a nuns..... Took for 30 mile run in traffic (I know....), dry, and got to destination and home no problem and not a drop in the resevoir not a drop of fluid leaking anywhere!
Being a nice basic closed system should be a simple diagnosis. Totally stumped and after much melon scratching could only come to a vauge assertion the perhaps one of the rear calipers had been seized and not properly bled and when moved out into position had pulled the fluid from the resevoir.........yes I know its "out there" but in the absense of anything else to go with (cue Sherlock Holmes once the possible has been ruled out only the impossible remain - or something like that).
Over to you guys - what do you think?
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PostPosted: Thu Dec 16, 2021 11:32    Post subject: Google Ads keep this community free to join!


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drew m
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Joined: 08 Nov 2015
Posts: 154
Location: falkirk

PostPosted: Fri Dec 17, 2021 7:48    Post subject: Reply with quote

Hi,
If brakes are working ok I'd keep topping  up reservoir and keep checking underneath, it's got to show up as a leak somewhere, can't just disappear.
Drew
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