Handbrake service

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dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 122

  Z3 roadster 1.9i
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Handbrake service

Post by dazthephot » Mon 31 Jul, 2017 12:18

Anyone done this recently? Is there a service kit that has all the required bits in?
Thanks


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rayman
Joined: Sun 30 Apr, 2017 13:24
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Re: Handbrake service

Post by rayman » Tue 01 Aug, 2017 08:20

My car did fail its MOT on the handbrake. The cables were rusted and split and it was a long hard job removing them. Luckily the bolts holding the drum to the hub were not rusty otherwise removal of the drum would be difficult. The back plates can be rusty so if the shoes are OK I would leave them. Adjustment was a little trying. You have to poke a long screw driver through a small hole to adjust the ratchet. I did most of the adjustment with the drum off so i did not need to adjust it too much for the final adjustment. You can also see the correct direction to adjust the screw. Once adjusted you can then tension up the handrake cables from inside the car
http://www.pelicanparts.com/BMW/techart ... cement.htm

Zedbedee
Joined: Sun 15 Mar, 2009 20:04
Posts: 139

  Z3 roadster 2.0
Location: Yeovil

Re: Handbrake service

Post by Zedbedee » Tue 01 Aug, 2017 08:26

Are you sure you need parts? The drum parking brake has an easy life. I recently looked at my 2000 2 litre 102,000 mile car and it just needed to be stripped, cleaned, re-assembles with a touch of copper grease at the appropriate points and it works perfectly. There were no signs of wear or degradation on the shoes at all. There could be problems with the cables however. They can stretch and corrode.

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dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 122

  Z3 roadster 1.9i
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Re: Handbrake service

Post by dazthephot » Tue 01 Aug, 2017 10:20

Thanks Rayman, i'll check that link.
rayman wrote:
Tue 01 Aug, 2017 08:20
My car did fail its MOT on the handbrake. The cables were rusted and split and it was a long hard job removing them. Luckily the bolts holding the drum to the hub were not rusty otherwise removal of the drum would be difficult. The back plates can be rusty so if the shoes are OK I would leave them. Adjustment was a little trying. You have to poke a long screw driver through a small hole to adjust the ratchet. I did most of the adjustment with the drum off so i did not need to adjust it too much for the final adjustment. You can also see the correct direction to adjust the screw. Once adjusted you can then tension up the handrake cables from inside the car
http://www.pelicanparts.com/BMW/techart ... cement.htm

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dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 122

  Z3 roadster 1.9i
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Re: Handbrake service

Post by dazthephot » Tue 01 Aug, 2017 10:21

I'm hoping not actually, just trying to be prepared. I suspect it's that funny link thing that's seized or stuck so i'll just have to strip it and see.

Cheers
Zedbedee wrote:
Tue 01 Aug, 2017 08:26
Are you sure you need parts? The drum parking brake has an easy life. I recently looked at my 2000 2 litre 102,000 mile car and it just needed to be stripped, cleaned, re-assembles with a touch of copper grease at the appropriate points and it works perfectly. There were no signs of wear or degradation on the shoes at all. There could be problems with the cables however. They can stretch and corrode.

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dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 122

  Z3 roadster 1.9i
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Re: Handbrake service

Post by dazthephot » Tue 01 Aug, 2017 10:24

This is what i suspect is causing the crap handbrake problem on the zed and my 320

http://www.ebay.co.uk/itm/BMW-1-2-3-4-5 ... 1438.l2649

Del
Joined: Sat 19 Nov, 2011 18:35
Posts: 2122

  Z3 roadster 1.9

Re: Handbrake service

Post by Del » Tue 01 Aug, 2017 10:58

Not a fan of this rear (hand)brake drum system myself. I strongly suspect that the shoes and mechanism never get inspected at "inspections" and there are too many parts to potentially fail e.g. the shoes, the springs, the adjusters and the hole in the backing plate for the "spring pin" which ideally needs a hub strip down to replace. I much prefer the rotating caliper piston system on the rear brake caliper.

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dazthephot
Joined: Wed 09 Apr, 2008 19:58
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  Z3 roadster 1.9i
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Re: Handbrake service

Post by dazthephot » Tue 01 Aug, 2017 12:43

Yeh think you're right. We've had this car 10 years and the drums have never been off.


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4wheels
Joined: Sat 24 Sep, 2016 20:42
Posts: 71

  Z3 roadster 3.0i

Re: Handbrake service

Post by 4wheels » Tue 01 Aug, 2017 16:28

Mine was a little sticky so took it apart and cleaned it all.
Works fine now
Can't see anything that would break or wear really

rayman
Joined: Sun 30 Apr, 2017 13:24
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Re: Handbrake service

Post by rayman » Wed 02 Aug, 2017 10:13


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dazthephot
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  Z3 roadster 1.9i
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Re: Handbrake service

Post by dazthephot » Wed 02 Aug, 2017 12:25

Thank you very much.


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