This final drive spin freely. It needs to be opened, reglued and get a new driveshaft seal. Axle seals did not get any heat on it.
LH Extra HD Final Drive Assembly
Pinion Shaft Diameter 48mm/1.90"
Final Drive fits:
John Deere Combine(s) S670, S650, S650 STS,S660,S660 STS,S670 STS,S680,S680STS,S690,S690 STS (s/n 765172-later),T550,T560,T660,T670,W540,W550,W650,W660 (s/n 094132-later)
John Deere Harvester(s) CP690,CS690,7660