Builder
Super Member
- Joined
- Feb 22, 2006
- Messages
- 6,138
- Tractor
- Kubota, AGCO, New Holland LB
Used a new Agrex spreader for salt/limestone chips in snow removal biz over the winter. Must have gone thru 25 shear pins. They were the small ~3/16" hollow split pin drilled through the spinner and through the vertical spinner shaft. Jumped up to a hardened bolt, broke those, too. Drilled spinner & shaft out to 5/16". Broke soft bolt in 5 minutes. Jumped up to grade 8 bolt and too my surprise, broke them too. Can't figure this one out. Nothing seems abnormal, PTO spins shaft freely. I baby the PTO when I turn it on. Not bumping spinner into anything. Can't go any bigger on the bolt, or it'll weaken the spinner shaft too much. Can't imagine what could possibly be causing a 14" spinner to shear through bolts that hard. Even the agitator in the hopper has a small shear pin and I only broke 2 of them, but the agitator has to churn up 1,000 lbs of material, so that's understandable.