Electric motor brushes.

  1. jimbo84 Member

    Messages:
    452
    Location:
    Up North
    Got an old dyson that has refused to die, until the other day when it has finally given up, sounded and smelt like the brushes, pulled it apart and ran the motor in the vice and there is all hell fury of arcing and sparking from the brushes.

    Pulled them out but there is still a lot of meat on them which surprised me. Sanded them down a bit so they have a new edge on and cleaned the commutator(?) ring so it has clean metal. Back together and ran it up, same thing.

    The brush springs didn't feel particularly strong, could that be a problem?

    A replacement motor is only £15 but has anybody got any other tips to try before I order one?
     
  2. gaz1

    gaz1 Member

    Messages:
    8,014
    Location:
    westyorkshire
    which model do you have ?

    dc01 1st model
    dc03 with double system
    dc04 with a different style vortex
    dc07 with valves at the top
     
  3. jimbo84 Member

    Messages:
    452
    Location:
    Up North
    It's a DC04 Absolute.

    Dyson_DC04_Absolute_1-1.jpg
     
  4. gaz1

    gaz1 Member

    Messages:
    8,014
    Location:
    westyorkshire
    i have that motor in shed

    dc04s have the same motor through out the dc04 range

    I dont know where your based other than up north

    otherwise give it a go for me
     
    jimbo84 likes this.
  5. jimbo84 Member

    Messages:
    452
    Location:
    Up North
    I'm over in Chorley, not far from Preston, quite a way from Yorkshire.
     
  6. gaz1

    gaz1 Member

    Messages:
    8,014
    Location:
    westyorkshire
    you will need a long stardrive screwdriver to get at screws watch out they also did an annoying 3 stardrive lock screw in them as well a security screw

    you will need the brushbar taken off to gain access to where motor is go steady on this part its annoying but sometimes with a little tweaking it will come apart for you
     
    jimbo84 likes this.
  7. It's probably the armature that has shorted turns.
     
    Anguz, jimbo84 and eddie49 like this.
  8. eddie49 Member

    +1 for this
     
    jimbo84 likes this.
  9. jimbo84 Member

    Messages:
    452
    Location:
    Up North
    Cheers Gaz, I've already pulled it to bits and ran it up with it held in the vice.

    Does that cause extra current through the brushes? The extra load would make sense with all the arcing and sparking from the brushes.

    I'll get a new motor ordered.
     
  10. jimbo84 Member

    Messages:
    452
    Location:
    Up North
    Cheers @gaz1 for the offer of a motor to try :thumbup:
     
Advertisements