 | Home > Technical > Unusual wiper fault |
 
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| wyvern Member Since: 14 Dec 2009 Location: Cornwall Posts: 2076   
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Many thanks for your guidance team !
just have to buy the bits and puller then give it a go!  Poppy - TDCI (Puma) 110XS 2.2 - Camper conversion - see the build here - https://www.defender2.net/forum/topic56530.html
Elgar -TDCI(Puma) 110XS Dormobile - now sold Devon & Cornwall 4x4 Response - DC126  |
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25th Nov 2022 1:12pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16946 
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An update on my original scenario, when I speculated that it might be heat-related: it isn't!
It did it again one morning this week as soon as I started the vehicle, which was stone cold. On this occasion as before, only the faster wipe speed was affected, and after running the wipers on speed one for a minute or two, speed two worked normally. I now have a complete set of spares in stock (switch, motor, wheel-boxes too) so it can stop happening. 
With this random wiper behaviour and my random failure to crank (see other thread) I think I am being visited by Lucas, Prince of Darkness. I don't think the two are connected. |
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25th Nov 2022 1:20pm |
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| Bish Member Since: 11 Nov 2008 Location: Hungerford Posts: 409 
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I come across this is issue regularly.
Very simple to replace the motor without fully removing the dash. It is something to do with the high speed brushes or switch wearing out. I simply replace the motor and can now do this job in about an hour. |
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27th Nov 2022 7:44pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16946
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An update in case anyone is interested. The problem as I suspected is the advanced wear on the high speed brush. As can be seen in the photo below, the HS brush (the one in the two-o'clock position) is worn almost to nothing. It is half the width of the other two to begin with and the amount of wear means that it is no longer reliably contacting the motor commutator.
Now to see if I can find a replacement brush set since there is nothing else wrong with the motor. Unsurprisingly LR says bin the motor and fit a new one, which is really quite unacceptable now that we are no longer supposed to be raping the planet of natural resources. Click image to enlarge |
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1st Jan 2023 5:04pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16946
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For info if anyone has a similar malfunction, a replacement brush plate assembly is part number DLZ000010 and costs around £35-£40*.
* Which is an absurd price but cheaper than around half the price of a new wiper motor of reputable origins. |
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1st Jan 2023 6:16pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 1802
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If measured I wonder if you can get similar carbon brushes, or just the carbon ends and change them out, are carbon ends held in by more than just the copper tabs clamping them blackwolf?
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1st Jan 2023 8:33pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3219  
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I wonder if you can take the brushes from an earlier unit, RTC198 that comes at about 50% of the price of a later brush unit. If it is worth your time and the risk, I do not know. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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1st Jan 2023 8:50pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 16946
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I shall investigate the feasibility of replacing just the brushes, since this would be a much more satisfactory approach.
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1st Jan 2023 8:58pm |
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