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Gooey36
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Joined: 23 Aug 2017
Posts: 84



PostPosted: Mon Nov 26, 2018 8:50 am    Post subject: Stuck handbrake? Reply with quote

Hi all

Driving home on Friday (last time before being taken off road for winter!) the car made a horrible clonk/thud noise before feeling like I was dragging 10 bags of sand behind me.

Luckily I was less than a minute from home, pulled onto the drive and the left rear stopped rotating and dragged across the gravel. The right rear also started spinning up - probably due to the gravel and the left being held.

Under closer inspection the disc and painted bit had tinted a blue colour. This tells me it got very very hot! See photo.

Due to a busy weekend I’ve not had much chance to look at it. Planning on “working from home” tomorrow so inevitably I’ll get an hour to start breaking it apart.

What’s people’s thoughts? Failed/stuck handbrake? Caliper? Worse?!

Assume best course of action is wind the handbrake back and get the caliper off and disc?
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Robertb
Long Beach


Joined: 01 Sep 2003
Posts: 6721
Location: South Oxfordshire

2002 Porsche 996 Carrera 4S

PostPosted: Mon Nov 26, 2018 9:04 am    Post subject: Reply with quote

Check for obvious things like seizure of calipers (you should be able to spin the rear wheels by hand with the car jacked up) but it sounds a bit like a fault with PSM, which is braking a rear wheel to stop it rotating.
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Wh1t3Kn1ght
Trainee


Joined: 22 Aug 2018
Posts: 65



PostPosted: Mon Nov 26, 2018 9:05 am    Post subject: Reply with quote

Howdy - sounds like the rear brake shoes for the handbrake have somehow got stuck against the inside of the disc...

How does the handbrake engagement feel?

Pretty odd though as the mechanism requires a pulling force to be applied to engage it e.g. lifting the handbrake handle to tighten the cable. So you'd expect it to fail in the open / released position.

The only thing I can think of it catastrophic failure of the brake shoe retaining mechanism and the shoes have jammed. Do let us know what you find!
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Marky911
Kyalami


Joined: 04 Jun 2009
Posts: 1917



PostPosted: Mon Nov 26, 2018 10:47 am    Post subject: Reply with quote

Yeah


Something in the drum part of the has jammed. If they're old shoes then maybe some material has crumbled off and jammed, or again if old, a spring may have snapped and wedged itself.

I'm sure it'll become obvious once you whip the disc off. Thumb
 
  
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Gooey36
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Joined: 23 Aug 2017
Posts: 84



PostPosted: Mon Nov 26, 2018 11:08 am    Post subject: Reply with quote

Thanks all, seems like some possibles.

Not sure fixing the PSM is a driveway/garage job! Yikes!

Hopefully it’s just handbrake related - will get it off tomorrow and post some pics!
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5520
Location: Brighton


PostPosted: Mon Nov 26, 2018 7:58 pm    Post subject: Reply with quote

The material on the handbrake shoes can break off .. this in turn jams the brake disc .. yours is pretty excessive .. in fact the worst ive ever seen Surprised

Disc off and see whats going on with the handbrake shoes .
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