Put the spring back
On
Don't know about your engine but the kubotas I have worked on had a spring you had to take off and out back on to pull injection pump went to governor mate just an idea
Multipower pump is driven off three point pump so if blocked off will load system or go boom boom which will cause some kind of situation just saying 😉🚜
Yes your control valve is on cylinder if it is over tightened it will stick and stay on causing oil to get hot
Or piston seal is cut and steering it will do same thing from bypassing oil
Will still steer but be hard because it is power assist not power steering