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Guys there is three or four things that can cause the problem of the PTO shaft turning when disengaged. #1. There is a brake in the unit that will hold the shaft stationary when disengaged. The brake could be worn out, especially if it has been used to stop an implement with a lot of rotating mass. The brake looks like a big brass washer. #2. The lever has to be locked back in the brake position. You should feel some resistance as youi move the lever to the lock. If the lever is allowed to just flop, it will be in a partial engage position, creating friction between the drive & driven discs, causing heat, warping the discs. This will be more severe with a heavy load. #3. If the clutch has been used to unslug a slugged implement it could cause the warped disc problem. #4. The system is pressure lubricated from the transmission pump. Oil is forced to the clutch pack when engaging/engaged. There are four drain holes that drain the oil away from the clutch when disengaged to prevent a fluid drive. Some tractors got out of the factory without these drain holes. If you rebuild the clutch pack, make sure you have 0.125" (thats a 1/8" drill bit) clearance between a drive and a driven disc when disengaged. You need this much clearance to prevent drag which builds up heat. If you do not have this clearance, come back to this board, and I will explain what needs to be done to correct.
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