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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1776
France 2008 Defender 110 Puma 2.4 CSW Alpine White
hi lift dumper brakes stuck
Any plant experts out there?

I've got a Wacker Neusen 1001 1 tonne hi lift dumper, approx 2017with 750 hrs from new. It's been unused / unmoved for 2 months and now it won't move - it appears the electric handbrake is stuck on.

It starts OK, and it will rock backwards and forwards with the hand brake switch off against the brakes.

Have checked the electrical connections on the hydraulic valve under the floor plate and they are clean.

I tried giving it a bit of a pull with SWMBO on the digger whilst trying to drive the dumper hoping it was just 'stuck brakes' but to no avail.

Any ideas?

Thanks in advance

Keith
Post #1035513 23rd May 2024 7:29pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5652
2006 Defender 110 Td5 USW Zermatt Silver
Does the park brake activate electrically or does the electrics operate the hydraulics?

If hydraulic have you tried cracking the bleed.
Post #1035519 23rd May 2024 8:29pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1776
France 2008 Defender 110 Puma 2.4 CSW Alpine White
Thanks Andy, but I think they're like air brakes ie use hydraulic pressure to release the springs that hold the brakes on.

I was hoping that after being so wet they'd just stuck on, but looking around they might even be 'wet' submerged in oil.

Will delve further at the weekend.
Post #1035588 24th May 2024 4:20pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17320
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I believe that the brakes are hydrostatic and incorporated in the drive motors. It is likely to be an electrical problem, possibly at the throttle pedal or forward/reverse solenoids. These machines are also known not to move if the battery is discharged, did you have to jump start the machine?

There is a service manual online here: https://www.yumpu.com/en/document/read/600...ker-neuson
Post #1035602 24th May 2024 5:46pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1776
France 2008 Defender 110 Puma 2.4 CSW Alpine White
Thanks BW, battery appears fine will read up and have a play hopefully next weekend.

Will report back!
Post #1035727 26th May 2024 12:31pm
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Chugga90



Member Since: 07 Sep 2014
Location: Bucks
Posts: 208
Not sure if he is still active on here?
Stew46 might have some knowledge about this as I am sure on disco 3 he lists so plant as part of his profile?
Post #1035745 26th May 2024 4:08pm
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