NHD
Guest
Thru the years and different models we have found that the biggest problem is tighening the shear bolt too tight. It has a self locking nut on it so it won't come off if left loose. Have you checked to see if everything is ok at the double u-joint om the augerIJ also the flighting may be bad in the u-joint. Our TR-99 has over 1100 hrs on it and untill lately we never had a pin shear. The new help didn't know about the loose bolt idea.