MF 135 Hydraulic Questions (w/Video)

A few weeks ago I originally posted about how the hydraulics on my MF 135 cut out on me. David P has been most helpful and I've tried to incorporate his diagnostic suggestions into figuring out what happened.

I checked the hydraulic filter and cleaned it. Checked the linkage, flushed and the hydraulics came back albeit much more slowly. I refilled the transmission with CarQuest (Coastal Oil) 303 Premium UTF that meets and exceeds the Massey Permtran 821XL specs.

That oil seems to be of simular viscosity to the Permtran verses the Tractor Supply Co. Traveller Branded UTF which was thinner.

Before I hitched the plow to the tractor, I raised/lowered the hitch using both the quadrant levers and the auxillary hydraulic levers at different times. The linkage raised and lowered, however again slowly and the lift arms seemed to vibrate travelling up.

Once I hitched the plow (2btm Ferguson AO) It raised slowly but a bit more smoothly. Lowered the plow and went to raise it again and the hydraulics failed again.

I'm attaching three videos, one when I drained the fluid and removed the response control cover, of the hitch going through its range of travel without an implement and hopefully it'll show the vibration and lastly of the plow mounted to the linkage going up and down and staying there.

I've probably over thought this but I'm curious if something isn't wrong with the auxiliary valve.

Thanks,

Christos

http://youtu.be/0igdCeniXm0

http://youtu.be/lQLdnXgSpeg

http://youtu.be/kE16Vt35tz4

had a 245 that the lift suddenly didn't won't to lift a 2 row cultivator,it would shutter and slowly lift it ,problem turned out to be someone put regular internal snap rings in place of the round ones that hold the pump piston caps in place ring broke and let a cap come out,also seen a 230 being used to push limbs out of the field using a road blade suddenly have about the same symptoms,while backing up the blade surged up hard and bent the control linkage under the lift cover that is connected to the draft sensor rod that the top link connects to