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Roof motor

Discussion in 'Z4 Roadster & Coupé' started by Davz, Aug 14, 2019 at 2:33 PM.

  1. Davz

    Davz Regular Member
    British Zeds

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    I am in the process of relocating the roof motor into the boot due to the inevitable water corrosion.
    I have had the motor soaking in diesel and have now cleaned it up with gt85.
    I have attached a 12v power supply, the motor turned about 2 turns and stopped.
    I can now get nothing from it, the shaft spins freely so it is not seized. Is this kaput?
    I'm going to put my multimeter on it and check the commutator, that is when I get a battery for the multimeter, I left it switched on a flattened the battery....doh!
     
  2. Davz

    Davz Regular Member
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    For anyone else doing the roof motor relocation, I have managed to get my roof motor started again. I had some advice to gently tap it with a hammer whilst applying 12v and low and behold it sprung back to life. The tap frees the brushes to contact the commutator. I then ran it for 5 mins at a medium speed and this has cleaned the commutator and is now back to full power.
    All I have to do is reassemble with some trolley jack oil in the hydraulic system and cable tie it in the boot and back to a fully working roof!
     
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  3. t-tony

    t-tony Zorg Expert (I)
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    Nice one Dave, I can post a picture of the position my pumps sits in if it helps you?

    Tony.
     
  4. Davz

    Davz Regular Member
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    Tony that would be brill if you wouldn't mind. I have the motor connected back to the oil resevoir (now filled with jack oil) and zipp tied it to a bracket I found behind the carpet. Thinking of making a panel covered with carpet to hide the motor.
     
  5. t-tony

    t-tony Zorg Expert (I)
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    I think you've got the right idea mate, but here's a couple of pictures from my car this morning.
    20190816_122352.jpg 20190816_122334.jpg
    Looks pretty neat.

    Tony.
     
  6. Davz

    Davz Regular Member
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    Thanks Tony, did you zip tie using the electrical block which is bolted to the inner wheel arch? Currently I have zipped it to the bracket which is covered with a round grommet, you can just see half of it. This is only temp as I haven't put the parcel shelf hinge in yet and was going to see how this worked when that is back in place.
     
  7. t-tony

    t-tony Zorg Expert (I)
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    I think that was where it was "tied" to mate. In all honesty I didn't do it myself.

    Tony.