Replace shield.

Lack of lubrication.

Clean and lubricate.

Tractor drawbar is not installed correctly.

Check dimensions. Install drawbar correctly.

Driveline is bent or twisted.

Replace.

Telescoping splines are galled or worn.

Replace shaft and tube as necessary, apply John Deere SD Polyurea Grease, or equivalent.

Replace worn or damaged parts. Inject with John Deere SD Polyurea Grease, or equivalent.

Driveline is bent or twisted.

Replace.

Driveline cross bearings are worn.

Replace bearings.

Constant velocity joint is worn or damaged.

Replace worn or damaged parts.

Splines on the tractor shaft are worn.

Replace tractor shaft.

Replace yoke.

Pawls are worn.

Replace parts.

SF04007,0000F96-19-20170808