JD 8440 PTO

[Ray Apinall]

PTO chatters under cab on slight turn probably no more than a 1/3 turn. One U joint as changed, the other seems good. Any ideas what it could be? It is only being used to run a air seeder fan.

 

[Hughlofting]

Carrier bearing

 

[zzvyb6]

Somebody put the joint together wrong. The two inboard yokes must be co-linear, not 90 degrees out of phase. Otherwise: chatter.