MF135 3PT not lowering

[certaindeath]

Hi,

Having an issue with my 135's 3 pt. The linkage raises fine but won't lower. When the position lever is moved to down the linkage drops a few inches then stops.

I'm fairly sure it used to work fine when I first bought the tractor a few months ago. Since then I have drained the hydraulic oil, replaced the filter added a diverter valve in place of the cover under the seat to allow a separate spool valve to be fitted to control the front end loader (which was originally controlled by the draft controls)

From what I've read I believe theres a relief valve that causes alot of issues. I've been a bit reluctant to go and pull it to bits again as I've just put ｣100 of new hydraulic oil in a few weeks ago when I finished the hydraulic work.

Can anyone offer any suggestions on what to try or do I need to start pulling things apart again?

Thanks

Ian

 

[MAN IN BLACK]

On my 2605,wich is the modern version of the 135... there's a sliding valve on the side of the control/draft levers...all the way to the front is fast descent, all the way back is dead slow or no descent.
Maybe yours (if equipped) is in the closed position (all the way back)

 

[DLTTrekkers]

Remove rightsidecover (that piece with the gearboxdipstick) and move controllever and see if internal link moves with.