BRAKE FAILURE!!! That was close.
Orig. Posting Date | User Name | Edit Date |
Mar 28, 2018 06:29AM | Dan Moffet | |
Mar 28, 2018 06:04AM | Alex | |
Mar 28, 2018 03:45AM | helpmymini | |
Mar 23, 2018 09:06AM | mur | |
Mar 23, 2018 06:29AM | CooperTune | |
Mar 22, 2018 12:23PM | onetim | |
Mar 22, 2018 01:37AM | Alex | |
Mar 21, 2018 01:40PM | Dan Moffet | Edited: Mar 22, 2018 06:13AM |
Mar 21, 2018 12:52PM | ve9aa | |
Mar 21, 2018 12:22PM | minimans | |
Mar 21, 2018 10:43AM | Alex | |
Mar 21, 2018 08:34AM | h_lankford | |
Mar 21, 2018 07:31AM | Dan Moffet | |
Mar 21, 2018 07:25AM | malsal | |
Mar 21, 2018 05:18AM | 6464 | |
Mar 21, 2018 04:25AM | helpmymini | |
Mar 21, 2018 04:20AM | Dan Moffet | Edited: Mar 21, 2018 01:37PM |
Mar 21, 2018 04:10AM | helpmymini |
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"Hang on a minute lads....I've got a great idea."
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We'll probably never know what happened to you, but my guess remains with one end of a shoe not in the right place on reassembly.
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What I was experiencing was a small leak. When the car was used daily it didn't require any bleeding. The fact that I JUST got it out of storage and was doing tuning for the season meant I knew I would have some issues to sort.
My belief is the clip on the back was the failure. When I installed a new wheel cylinder the clip was bent when put on and didn't stay. I'm shocked still there was enough room to allow the piston to fully escape the cylinder.
I have since purchased two wheel cylinders, 4 new springs and the nifty tool to install the clips. Now the clips are in proper shape and position, the springs are doing their job and the brakes work great.
I'm sure there are many better mechanics out there who could tear my car apart and build it better than me. But it's my car. It's me and I enjoy it almost daily.
Thank you to those with constructive comments (and criticism) and good luck to those who just read and learn. Over 300 people read this while 20 or so commented. Case in point.
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Brakes fail because parts fail and because mistakes can be made when servicing and repairing these systems. It is important to accept that we all make mistakes.
Things get really bad when a mistake is made, and it is ignored because of the culture; in this case, the ideas this fellow has about automotive hydraulic systems.
I am not writing this to be mean. My goal is to illustrate the gravity of the mindset problem. This is far more dangerous than simply assembling the brakes incorrectly.
Minis are cars, and like every other car on the road improper service can result in crashes that can cause injury or death.
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Did you replace the adjusting tappets ?
The little stepped wedges ?
The only fail mechanism I can think of is an incorrect assembly, so you need to figure out what you did wrong.
As pointed out, multiple bleedings should have flagged up a massive warning - hydraulic systems shouldn't need more than one, maybe two, bleeds and will sit for years.
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Sorry Dan, but that is utter bollocks.
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"Hang on a minute lads....I've got a great idea."
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~ 30 minutes in a Mini is more therapeutic than 3 sessions @ the shrink. ~
Mike NB, Canada
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Mini's are like buses they come along in a bunch
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Sorry Dan, but that is utter bollocks.
The 'dead' end of the shoes sit on the adjusting tappets and are moved in and out by the adjusting screw symmetrically.
The 'live' end of the shoes are moved by either the wheel cylinder or the the handbrake mechanism. The handbrake has no part at all in setting up the brakes for bleeding or adjustment as the mechanism is slack in the shoes when the handbrake is off. If the handbrake is on the shoes will drag.
With everything fitted correctly it is also impossible for the shoes to move.
The only thing i can think of is that on reassembly you didn't hook one of the shoes into the piston properly - probably onto the edge of the slot instead of inot the slot - and it came out under load.
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Even if the drums were worn out and there were no shoe linings left on the shoes i still don't think there could be enough space for it to happen. Something else must be going on with the brakes inside that drum.
I would start by measuring the drums to see if they are in spec.
If in doubt, flat out. Colin Mc Rae MBE 1968-2007.
Give a car more power and it goes faster on the straights,
make a car lighter and it's faster everywhere. Colin Chapman.
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See Alex's reply above. "utter bollocks' occurs when one isn't fully awake!
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"Hang on a minute lads....I've got a great idea."
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My question is: If the pads are like new, and the adjuster is all the way out can there be enough play in the shoes to allow the piston to do this normally? Is there something else wrong? Could the cylinder have moved on the back plate?
If nothing else, check your brakes often. This scared the hell out of me. My car is an original Cooper S with original paint. I could have permanently damaged it beyond repair.