Posted by mazemeister on January 24, 2023 at 15:34:44 from (24.184.254.103):
In Reply to: 806 T/A and PTO Issues posted by Woody7902 on January 24, 2023 at 04:05:46:
On the TAA issue: you say it acts like jt is in DD with the stick forward or back. Are you SURE it is in DD? Or could it be in TA all the time? Will the engine hold the tractor back when driving down a hill? If its actually in TA and it freewheels going downhill then (assuming the TA worked properly before repair) maybe you arent getting hydraulic pressure to the TA clutches, could be a problem in the MCV. If it is actually in DD then you must have pressure to the TA, so the problem must be in the mechanical control linkage or the MCV. Looking at your pictures, good call on replacing the IPTO shaft but Ive seen worse. It hadnt failed yet.
As for the PTO issue: the pressure at that plug on the left side of the pto housing should be: off, 0 psi; partial engagement (feather position), 40 psi; and full engagement (linkage over center), 240 psi. If you have pressure when the control handle is down, the problem must be in the linkage or the valve. If no pressure, maybe the clutch discs are warped. Hope this helps!
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