Before using the blower I greased everything and made sure the gear box had oil (it didn't). During my pre use inspection I noticed that the rotor shaft (#39 in the diagram) which takes the torque from the gear box to the drive sprocker seemed not to free spin even though there was not a shear pin in the hole. I figured it was rusted/seized and that it would break free when it had enough torque applied to it - but for good measure I hit it with PB Blaster to.
Well - when I was blowing snow two weeks ago I encounterd a rock and the rotor shaft did not spin as it should and one of the PTO belts overheated.
My question is this - should I remove the drive pin and just run a shear bolt? I seems to me like the drive pin was to strong and did not break, which resulted in the auger jamming (it was a 4" or so rock) which caused damage to the auger (bent metal) and overheating the belt.
I'm wondering if I should keep the drive pin out and just use a shear pin?
The manual talks about the 1/4 drive pin possibly breaking and then upgrading to a 5/16" pin. The 1/4 rolled pin didn't break so I would hesistate to put a bigger rolled pin in.
The parts diagram shows a 1/4 drive pin and a 5/16 shear pin.
If folks have advice or peronsal experience with these Bolens Snow Throwers I'd love to hear from you.