Ontario Canada has been having very cold conditions in some places.
Problems with cables freezing due to moisture inside has been a recurring issue with my M7040 rear remotes.
I removed one piece of interior trim to allow cab heat to get to the remote cables.
Tell us about where your tractor is stored and the local weather conditions.
Any way to get tractor into somewhere warm to see if things change?
I think there is a metal guard protecting the loader valve which is easily removed.
Disconnect the cable connection to the valve spool as
JasonW suggests and see if the cable moves freely.
View attachment 120340
Dave
Figured out what the problem was. I removed the lever/controller cover in the cab. I was able to see some corrosion on the tops of the pivots and there was some squeaking. Applied lots of WD40 then lithium grease to the controller and cleaned the pivots. Added WD40 to cables and links. It now works like new. I suspect that moisture and dust had worked its way up the cable and in the linkage. Something to add as part of my regular maintenance.