1. 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

Screwed up! Used brake fluid in Magura clutch...oops!

Discussion in '4 Stroke' started by Force10, Jun 23, 2019.

  1. Force10 Husqvarna
    AA Class

    Husqvarna Motorcycle:
    2005 TC 250
    Other Motorcycles:
    2016 CRF250R
    I'm pretty ignorant about hydraulic clutches...first one for me. (used to japanese bikes)

    Anyway...out riding and my clutch gives out. Get it back to the truck and pop the reservoir cap and the fluid is below the hole. I look on my phone for what I should put in there...but signal is sketchy and I find a synopsis of a 2005 TE. Anyway it said use dot 4 brake fluid. (I guess the synop was a from a different model since this is wrong)

    After asking around...nobody had any. Had to drive 25 mins and got some from Autozone. I get back and just top off the fluid...pump it up and ride for an hour then forgot about it. This was last week Saturday. Reading my service manual today it says "Do Not use brake fluid" GAH!

    I'm guessing I added an ounce? Anyway...I had mineral oil so I did a reverse bleed full purge twice. Got everything out I could. Fired up the bike on the stand and the clutch is fine. Zip tied the lever and that's where I'm at now. I will purge again and use Magura blood (or equivalent) later.

    What seals might I have borked? I know brake fluid is corrosive but I'm hoping the ratio was small enough...and it wasn't in there very long...that I might be ok.

    Thoughts?
    Force10, Jun 23, 2019
    #1

  2. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    I don't think that there will be much of any consequences from that. I once refilled a Gas Gas clutch system with mineral oil instead of the recommended dot 4 and never had one problem with it in five years. However, I am more concerned about the fact that you lost fluid in the first place. Probably time to rebuild the slave unit, using a 7602 piston and x ring. This is what I did for my 2007 TE 450 when it had a problem, and it remained good after that.
    Dirtdame, Jun 24, 2019
    #2
    Trenchcoat85 and rancher1 like this.

  3. Force10 Husqvarna
    AA Class

    Husqvarna Motorcycle:
    2005 TC 250
    Other Motorcycles:
    2016 CRF250R

    Good point! I pulled off the slave unit last night...first thing I noticed is there was no gasket. There was a bunch of fluid inside...I guess my seal was porked and leaking inside. I bit the bullet and bought a complete Oberon replacement and have Magura blood on the way. The bummer is I don't think it will make it here for the weekend ride!

    Thanks for the help :cheers:
    Force10, Jun 25, 2019
    #3
    Dirtdame likes this.