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Fuel pump eccentric

Discussion in 'Early CJ5 and CJ6 Tech' started by Toolmaker, Sep 30, 2009.

  1. Sep 30, 2009
    Toolmaker

    Toolmaker Member

    Westminster, SC
    Joined:
    Oct 3, 2005
    Messages:
    132
    My :v6: fuel pump eccentric has a groove worn in it at the highest point. Would it be possible to repair it by welding up the groove and sanding it back down? A new one is only $35 from TA Performance, but I just ordered $120 worth of gaskets and seals and my Jeep fund is empty.
     
    Toolmaker, Sep 30, 2009
    #1
  2. Sep 30, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
    Messages:
    8,360
    I'd be afraid of annealing it, making it too soft from the heat. Fill it with JB and sand it down. I did it to mine....Mine just had some minor pitting though.
     
    Patrick, Sep 30, 2009
    #2
  3. Oct 1, 2009
    Toolmaker

    Toolmaker Member

    Westminster, SC
    Joined:
    Oct 3, 2005
    Messages:
    132
    It looks like it's cast, I suspect it's not hardened. I was thinking of welding with a high nickle content rod. The weld would be harder than the cast iron.
     
    Toolmaker, Oct 1, 2009
    #3
  4. Oct 1, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
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    8,360
    I'm sure it's case hardened....
     
    Patrick, Oct 1, 2009
    #4
  5. Oct 1, 2009
    Toolmaker

    Toolmaker Member

    Westminster, SC
    Joined:
    Oct 3, 2005
    Messages:
    132
    Yep, you're right. I got it off this afternoon and it's defiantly hardened. I'm still going to try repairing it. We have some special welding rods at work that we use for hardened stuff.

    [​IMG]
     
    Toolmaker, Oct 1, 2009
    #5
  6. Oct 3, 2009
    Toolmaker

    Toolmaker Member

    Westminster, SC
    Joined:
    Oct 3, 2005
    Messages:
    132
    Oh well, didn't have much luck with this. After cleaning the eccentric in a heated ultrasonic parts washer it looked shiny and clean. As soon as the heat would hit it, unseen oil would come out of the pores of the metal. I couldn't get it clean enough to get an acceptable weld. I figured it wasn't any good the way it was so I haven't lost anything.
     
    Toolmaker, Oct 3, 2009
    #6
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