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Timing Chain Play

Discussion in 'Early CJ5 and CJ6 Tech' started by cpdad93, Jun 26, 2016.

  1. cpdad93

    cpdad93 Member

    In mt search for parts of the fuel pump, I come across this. The timing chain tensioner is touching the chain, but not really doing much. In the one pic it is as it is naturally and the other pic is with me pushing the tensioner to a point where the chain is tight. Is this normal or has the chain stretched or possibly the spring just wore out. 68 odd fire. Thanks tc2.JPG TC1.JPG
     
    cpdad93, Jun 26, 2016
    #1
  2. Patrick

    Patrick Super Moderator Staff Member

    That's too loose. Time for a timing set.
     
    Patrick, Jun 26, 2016
    #2
  3. Patrick

    Patrick Super Moderator Staff Member

    It's likely a combination of a stretched chain, worn gears, and possibly a weak tensioner spring. Replace it all.
     
    Patrick, Jun 26, 2016
    #3
  4. Patrick

    Patrick Super Moderator Staff Member

    Actually, looking at your pics, it looks like the tensioner/ spring isn't doing it's job, but either way I'd replace it all. The factory cam gear had nylon teeth, so yours has been replaced at some point, FWIW.
     
    Patrick, Jun 26, 2016
    #4
  5. cpdad93

    cpdad93 Member

    Any suggestions on where to order new timing gear set? Locally O'Reilly, Napa and AutoZone don't have. I just need a basic set. Thanks
     
    cpdad93, Jun 26, 2016
    #5
  6. ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    It is loose for sure, but the action you are seeing might be from something other than a worn out spring.

    If you shut off your engine and the compression from one of the cylinders caused the crank to spin backwards (or a valve spring pushed the cam backwards) just a hair, it will cause a little slack in the driver's side, and it will put a bit of tension against the tensioner.

    If all your slack was in the passengers side and the drivers side was tight, nevermind.

    Either way, like was said, it all could stand to be replaced since you have it apart. If you have to button it up with just a new tensioner and spring, I know napa can get them for a couple of bucks. I got a new spring and shoe last year.
     
    ITLKSEZ, Jun 27, 2016
    #6
  7. bolingball123

    bolingball123 Member

    Not sure if it will have the tensioner assembly but here is the chain and sprockets.
    https://m.summitracing.com/parts/cca-3215
     
    bolingball123, Jun 27, 2016
    #7
  8. cpdad93

    cpdad93 Member

    Thanks comrades. have it all ordered
     
    cpdad93, Jun 28, 2016
    #8