Yoke not fixed on profile tubes, pin moving

Excessive dynamic load. Unequal or excessive joint angles

Check correct fit of yoke and tube

Replace parts

Yoke ears spread

PTO drive shaft too long

Adjust PTO shaft length. See "Preparing the Mower-Conditioner" Section

Replace parts

Axial forces too high

Clean and grease profile tubes; replace both tubes, if necessary

Yoke ears distorted

Overload caused by high starting and peak torques

Adjust PTO shaft length. See "Preparing the Mower-Conditioner" Section

Replace parts

Pressure marks on yoke ears

Excessive bending of rotating drive shaft due to bad adjustment of telescoping hook-up length

Readjust telescoping hook-up. See "Preparing the Mower-Conditioner" Section

Bearing caps blued

Insufficient lubrication

Replace bearing caps

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