4 wheel drive seize?

[Bowhunterick]

I was doing some brush hogging today in 4 wheel drive and without warning the front wheels seized up and will not rotate. Any advice would be appreciated. Tractor is B2400 HST.

 

[Tooljunkie]

Driveshaft to front axle broke and jammed?
Would have to jack front end and put in 2wd and see what will or wont turn.

 

[lugbolt]

Have run into this before on a B7500. Similar tractor as a B2400. Found front hub bearing failed, dropped bearing balls down into the bevel gear, locked it solid.

 

[Shadow]

Or the pinion bearings locked up. Have done a few that were this way...

 

[rbargeron]

Will it move in 2wd? Lift the front and try to rotate a wheel by hand. I one turns, problem is in the other. If nothing will move its in the pinion/differential/driveshaft blocking both sides. See what difference disengaging fwd makes.