Zetor 8045 won't move

[aaaleks]

Hi everyone. I have zetor 8045, and how it works normally, suddenly start to slow down speed. Now i put it on gear and it do not want to move. I change the oil in the gears with new one, change the filters, but nothing.Where could be the problem, can anyone help me.

 

[Renze]

Can you be more specific ?