R Barger
Gold Member
- Joined
- Jan 1, 2013
- Messages
- 250
- Location
- Gate City, Va
- Tractor
- YANMAR YM336D/W Loader JOHN DEERE 850/ W Loader 2WD&4WD Kubota RTV 900
Ok, here is a question on the drop box function and how things are supposed to work. I have it taken off the tractor right now. The bent part looks almost perfectly straight right now, I must have gotten it somehow 2 years ago when I started this mission.
Drop box has a shaft running into it and it sticks out the front an inch or two where the 4wd drive shaft attaches. When the 4wd lever is pushed forward it pushes the gear back and engages the other gear as it should. You can spin either the gears or the shaft stub that sticks out and the other one turns. That is how I think it should work. However; when you put it into 2wd, the lever does disengage the bottom gear by moving it forward as it should. BUT when I grab the stub that sticks out, you cannot turn it at all. In thinking of what Aaron told me way back when.....when the 4wd axle is off, the stub where it attaches at the front of the tractor should still be moving even if in 2wd but the one at the back should not be moving in 2wd if the 4wd axle is off. Everybody seemed to think that made sense.
But if, and I believe it is, the 4wd shaft is a solid rod when it is put back on and you are in 2wd and the front "stub" is turning...would this not make the 4wd axle turn? If this is true and the axle is turning, then the rear stub would have to be turning but it would not be in 4wd as the bottom gear in the drop box is disengaged. So what would make the rear stub coming out of the front of the drop box not turn right now???? I think this may be the problem, of course I'm half nuts and zero mechanic.
Is this what would cause the tractor to not function properly when it has the 4wd axle installed and it is in 2wd????
When the drop box is in 2wd the shaft that the drive shaft connects to should turn freely. Sounds like you have a problem in your drop box.