Here is the photo for the grade 8 Fan shear bolt provided for the owner from Alaska with shear bolt problems.
What was happening to this owner is the shear bolts provided in the bag by Kubota had the threaded part of the shank on the shear plane and with repeated failures of these hard threads with the two flanges, the holes became distorted.
He has now welded up the holes and re-drilled, obtained a grade 8 bolt with a longer shank, added a washer or two to be certain the nut. when torqued to the proper value, is actually tightening the clamping of the assembly and the torque values are not just from the nut running out of threads and improved on the mechanically distorted lock nut so he knows now that the nut has not backed off. He is expecting snow this weekend so will report back.
Anybody know how to take the part number on the bag and work backwards to find what Kubota says it should be used on?
Dave M7040
What was happening to this owner is the shear bolts provided in the bag by Kubota had the threaded part of the shank on the shear plane and with repeated failures of these hard threads with the two flanges, the holes became distorted.
He has now welded up the holes and re-drilled, obtained a grade 8 bolt with a longer shank, added a washer or two to be certain the nut. when torqued to the proper value, is actually tightening the clamping of the assembly and the torque values are not just from the nut running out of threads and improved on the mechanically distorted lock nut so he knows now that the nut has not backed off. He is expecting snow this weekend so will report back.
Anybody know how to take the part number on the bag and work backwards to find what Kubota says it should be used on?
Dave M7040