I can't believe I'm the ONLY one who ever experienced this concern - ONLY received one reply from JimB2 (thank you) on recommendation for investigation.
Briefly, I dead headed the MCV with a fixed load on the 3 point, shut off the tractor and freed the load after which the rockshaft went full up and does NOT respond to the position control lever.
I DID check all mechanical linkages underneath the rockshaft housing inspection cover and found NO issues. I can get the rockshaft to lower by pressing against the main are assembly (attached to the spool valve) which is part of the Draft Control Body Assembly (see photo). It appears this valve, for some reason which I and the dealer cannot determine, is getting powered at start up which raises the rockshaft. Moving the position control lever has NO effect.
The obvious fix is a time consuming/costly one involving removing fenders/fuel tank and the rockshaft housing exposing ALL of the mechanical and hydraulic systems underneath for investigation/repair.
I hold out hope that someone had this concern and could provide another answer (like draining Hytran, replacing it with kerosene then functioning the position control lever and, hopefully, eliminating a stuck valve).
ANY/ALL comments on above are appreciated.
Briefly, I dead headed the MCV with a fixed load on the 3 point, shut off the tractor and freed the load after which the rockshaft went full up and does NOT respond to the position control lever.
I DID check all mechanical linkages underneath the rockshaft housing inspection cover and found NO issues. I can get the rockshaft to lower by pressing against the main are assembly (attached to the spool valve) which is part of the Draft Control Body Assembly (see photo). It appears this valve, for some reason which I and the dealer cannot determine, is getting powered at start up which raises the rockshaft. Moving the position control lever has NO effect.
The obvious fix is a time consuming/costly one involving removing fenders/fuel tank and the rockshaft housing exposing ALL of the mechanical and hydraulic systems underneath for investigation/repair.
I hold out hope that someone had this concern and could provide another answer (like draining Hytran, replacing it with kerosene then functioning the position control lever and, hopefully, eliminating a stuck valve).
ANY/ALL comments on above are appreciated.