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Case Tractors Discussion Forum

Re: Looking for 1958 CASE 400 PTO clutch replace/repair

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Author  [Modern View]

09-14-2020 17:45:52

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I finally realized the over center is action is on the clutch itself. In the photograph I marked the over center pivot. I mistakingly adjusted it too tight. It could not go over center.
I backed off the adjustment a little at a time. Kept trying and finally got it loose enough to pop over center. I don't think it ever did that before. It made a metallic snap when it popped into the engaged position
It wouldn't pop back out over center. It was stuck in the engaged position. The grade 2 pinch bolt in the upper throw lever was stretched. The keyway for it in the upper throw out shaft has a lot of wear.
I put in a new grade 5 pinch bolt. Now I can get the PTO clutch to pop into the engaged position and back out to the disengaged position. Hope it lasts.
Final adjustment was the length of the top throw out rod. I got the PTO hand control lever to go over center close to the same as when the clutch pops over center. I was confused by the two different over center pivots.
I had no idea it was supposed to pop when you engaged the PTO. And pop back out when you disengaged it. Total over center newbie here. Thank you for teaching me, everyone.

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