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Trip rod goes up but not back down

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  • Trip rod goes up but not back down

    Ive got a machine that the trip rod will go up but not back down. I replaced the trip rod assembly, replaced all of the bushings, rebuilt the clutch and have had no luck. Ideas?
    Experience: We currently maintain 12 AMF 82-70's

  • #2
    When the trip arm in stuck up, back off the inner clutch plate so its tab is no longer touching the finger of the trip arm. Does it go back down then? If it does not, then there is a bind in the trip arm. Possibly the trip arms' rear mounting bracket. Or maybe the rocker arm's spring is broke or missing or out of its slot?
    If it does go back down, then there is too much spring tension on the clutch, no grease on the trip fingers and inner clutch plate tab, ot the tab and/or trip arm fingers are worn to a point where grease on the fingers does no good.
    There! Try to NOT work now!

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    • #3
      Has to be too much clutch tension. I did that yesterday but didn’t think about backing off the clutch tension. I replaced the rocker arm spring.
      Experience: We currently maintain 12 AMF 82-70's

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      • #4
        I've had that issue caused by a sharp edge left on the clutch finger from the manufacturer. it was digging into the trip rod finger and not sliding down off of it. Took a file to it and readjusted the triggering mech. and made sure there was a whisper of grease on the fingers.

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        • #5
          The roll pin in the casting hasnt snapped has it.

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          • #6
            So i took the clutch back apart and discovered that the pinion gear/sleeve bearing were in rough shape. I replaced them and it started running better for awhile.Then it started doing this stupid thing again, and my co worker looked at it and greased it up and did a few adjustments and it worked for awhile and we're back to where we were the first time.
            Experience: We currently maintain 12 AMF 82-70's

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            • #7
              Maybe the Rocker Arm's top roller is moving off the trip rod?
              There! Try to NOT work now!

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              • #8
                Possibly top trip roller catching on the turn pan?

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                • #9
                  Are the stop blades catching the back of the clutch?

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