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  1. #1

    Join Date
    Oct 2005
    Location
    Canton, OH
    Posts
    426

    One way bearing always covered in oil

    I have had issues with the one way bearing always slipping. I have replaced the bearing multiple times only to have it slip again after a few runs. I have the rotostart installed, and whenever I remove the rotostart housing, I will find the one way bearing is covered in oil. I thought maybe the exhaust was dripping oil down behind the rotostart housing and covering the bearing. I cleaned the oneway bearing and the starter shaft with brake clean, and I put silicone sealer around the rotostart housing to find out if it was coming from the exhaust or the backplate/starter shaft. After I finally got the truck started this afternoon (the oneway would usually catch just enough to crank the engine 1 rev or 2 before slipping). I ran about 1 tank today, and removed the rototstart housing only to find oil in the oneway bearing again. I then removed the engine backplate and the starter shaft. I found there is a couple thousandths of play between the backplate and the starter shaft. I'm wondering how much play there should be between the plate and the shaft. It seems to me I need to replace the back plate and the starter shaft. Thoughts please?

  2. #2
    The Real Dogman's Avatar
    Join Date
    May 2006
    Location
    Pontiac, MI
    Posts
    2,256

    RE: One way bearing always covered in oil

    install a small o-ring around starter shaft on inside of starter plate(might need to cut a land in the aluminum back plate for o-ring. Also get some 80grit sandpaper and score the started shaft longitudinally(parallel to shaft) so the OWB has a more scuffed surface to "grab" That should help!
    Nemesis/Genesis/Arena/3 WKs/Axial XR10/Bully Crawler/2 Vintage RC10/2 Losi MRC/BAJA 5t ahh f\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'\'k it, too many to list!!!

  3. #3

    Join Date
    Apr 2005
    Location
    _, AB, CANADA
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    RE: One way bearing always covered in oil

    What fuel are you using? I was originally using "blue thunder" and was having OWBs slip all the time. Eventually someone told me it could be the dye in the fuel and once I switched fuel I haven't had another one slip.
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