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In Reply to: 1066 clutch? posted by kim on Monday, February 25, 2008:
With the limited info, I would say it may not be the clutch. I assume the clutch worked before the MCV repair and there is nothing in the MCV that would affect the clutch directly.
It is possible that the TA is smoked, especially if you had a bad MCV pump. The TA clutch pressure comes from the MCV. It is also possible that the MCV was reassembled incorrectly and the TA just doesn't have any operating pressure.
You say that you never use the TA but in reality you are always using it. The TA high is a hydraulic clutch pack on the input of the driveline. TA low is a separate hydraulic clutch pack and a sprag style over-running clutch. If the tractor is operated without good MCV pressure, the hydraulic clutches will burn out and put the drive load on the weaker sprag clutch, eventually it will give up.