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Author Topic: Plee for help.....  (Read 1594 times)

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Marks DTM Calib

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Re: Plee for help.....
« Reply #15 on: 04 May 2009, 20:54:08 »
Yep, just to close this one dwon.

The route cause was that un-vented rear discs had been fitted to a setup with calipers designed for a vented unit.

The vented discs are considerably fatter (6+mm) and this extra meat is all on the outer face of the disc.

The result is that the inner pad works fine but the outer pad now has an extra 6mm to travel which, as the pad wears, means the outer piston pops out of its bore and the result is a big loss of brake fluid.
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Marks DTM Calib

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Re: Plee for help.....
« Reply #16 on: 04 May 2009, 20:54:57 »
And thanks to everybody for the help and support in sorting this one out!
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feeutfo

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Re: Plee for help.....
« Reply #17 on: 04 May 2009, 21:03:08 »
Quote
Yep, just to close this one dwon.

The route cause was that un-vented rear discs had been fitted to a setup with calipers designed for a vented unit.

The vented discs are considerably fatter (6+mm) and this extra meat is all on the outer face of the disc.

The result is that the inner pad works fine but the outer pad now has an extra 6mm to travel which, as the pad wears, means the outer piston pops out of its bore and the result is a big loss of brake fluid.
And break failure...? break me. Did the seals stop the piston going back in?
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Marks DTM Calib

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Re: Plee for help.....
« Reply #18 on: 04 May 2009, 21:17:19 »
Nope, fortunately the seals were not damaged so once the caliper was off it was easy enough to sort out.

The brakes did take quite a bit of bleeding though!
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feeutfo

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Re: Plee for help.....
« Reply #19 on: 04 May 2009, 22:16:17 »
sorry to keep on but im wondering...
Do we have 2 depths of caliper to account for this, i thought all calipers where all the same?
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TheBoy

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Re: Plee for help.....
« Reply #20 on: 04 May 2009, 22:47:09 »
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on the rare occasions my CID was working on the way home, it was displaying a 500+ range, despite having only about 1/3rd of tank....   ....i wonder why....
Probably the same reason mine gave under 20 despite driving like miss daisy . . . .  :-[
Yours has right code index on for a 3.2 auto - 074
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Grumpy old man

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Re: Plee for help.....
« Reply #21 on: 04 May 2009, 22:51:20 »
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sorry to keep on but im wondering...
Do we have 2 depths of caliper to account for this, i thought all calipers where all the same?

Nope, different calipers have a different number stamped on them.

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