Fordson power major grinding noise

[Liammajor]

Took my major out today for a run round went too change down a gear the tractor clunked a little like it wasn't going into gear fully and then went it but after this the tractor was making a grinding noise, sounds too be coming from the transmission, popping it into reverse and then slowly going backwards it was almost like it was sat in a rut going back abit then having resistance if that makes sense, would anyone have any ideas on what could of gone wrong internally many thanks

 

[Bucks Boy]

Had a Major develop a gearbox problem. Grinding and lumpy movement. Took the drive pulley off side of gearbox. Could see brass bush had slipped out of centre of gear. Managed to push it back in with lever from the outside. Refitted pulley and filled gearbox up to full level. Worked fine afterwards. Was still OK when sold. Think very low oil level caused the problem.