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Home > General Chat > OT - twin circuit brakes - after a line failure...

turbodave16v
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SouthPark, Colorado

8th Nov, 2006 at 01:58:22pm

I had a potential brow-trouser moment last night; when the 'front to back' brake line on my F150 blew apart... Not split / weeping, but 100% separated. Never again will i accept complains or moans about MOT tests LOL!

Anyways...
The brake pedal on my truck had the slightest resistance about half-way, but I pushed straight through this and bottomed out on the floor. Luckilly, I was on my land at the time, and a tree volunteered to aid my stopping. *laughing*


So - am i right in thinking that this 'dual circuit' did NOT do what it was meant to do - ie it looks like the master cylinder is also at fault?

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



Jimster
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455bhp per ton
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Sunny Bridgend, South Wales

8th Nov, 2006 at 02:38:08pm

shit!! Scary Stuff!

I'm going to act on this now!!!

going to plant some more trees!

Team Racing

On 15th May, 2009 TurboDave said:
I think the welsh one has it right!


1st to provide running proof
of turbo twinkie in a car and first to
run a 1/4 in one!!

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Jay#2

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Northern Ireland (ex AUS)

8th Nov, 2006 at 02:57:38pm

Ha ha yeah if that tree wasn't there you would have hit something!

On 7th Nov, 2008 Nic said:
naeJ
m
!!!!!!sdrawkcab si gnihtyreve ?droabyekym ot deneppah sah tahw ayhwdd


Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

8th Nov, 2006 at 03:01:44pm

I had a rear system failiure on a metro. (The rear wheel cylinder decided to come off the backplate after a series of massive chavy handbrake turns... i had to jack the car up remove all the handbrake bits that had gone round and round inside the drum the drive 20 miles home at 3 am)

anyway on the metro IIRC one pair of front pistons (one each side) have a circuit and the other pair share with the rear.

I had virtualy no braking and the pedal went to the floor apart from getting slightly harder about 5mm from the bottom, but if you went slow enough ie less than 20 it was enough to slow and stop the car as long as you didn't need to emargency stop.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



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Bat

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Bermingum

8th Nov, 2006 at 04:29:33pm

Hi,
I think the problem could well be the pressure differential valve. As this doesn't normally move it sticks / seizes then when you need it the most it lets you down!
Cheers,
Gavin :)

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turbodave16v
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SouthPark, Colorado

8th Nov, 2006 at 04:49:40pm

well, if you can tell me where it is on an F150 that'd be great; becuase there isn't one. LOL!

Edited by turbodave16v on 8th Nov, 2006.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY



Tom Fenton
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Rotherham South Yorkshire

8th Nov, 2006 at 05:01:15pm

Nasty!

Could it be perhaps that the US spec does not require US vehicles to have split lines like UK stuff? Just a stab in the dark as I do not know the differences between US and UK safety laws?


On 29th Nov, 2016 madmk1 said:

On 28th Nov, 2016 Rob Gavin said:
 I refuse to pay for anything else


Like fuel 😂😂

Bat

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Bermingum

8th Nov, 2006 at 05:08:47pm

Hi,
Dave, it maybe "built" into the master, two seperate pistons with a spring inbetween.....
Cheers,
Gavin :)

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