Well yesterday was kind of lost, it was raining so hard I didn't want to move the tractor across the lawn to the garage but today is a different story
I mounted the blower & ran it up some to be sure there were no issues. It's a beast. I looked it up on Normand's site & it says it weighs just over 600 lbs but then it has the hydraulics added that must add another 50-60 lbs. I wasn't sure how the little
L3400 would handle it but the 3 pt had no problems lifting it easily - even at idle. Just seems like a lot of weight hanging way back there.
Now I'm (almost) ready for some serious gravel throwing. Speaking of stones, I see only one lil itty bitty shear bolt (on the drive shaft) of this brute. . . does that sound right???
==================================================
If you have not done it already lower the skid shoes to keep it above the gravel until you have frozen ground.
The drive sprockets and bevel and spur gear box have key stock that will shear if jammed and the chain may break as well as secondary safety break.
I am unsure if the Impeller shaft has a shear pin behind the impeller drum if it is exposed between the gear box and impeller drum.
IF it were me in your situation:
1. I would replace the shaft you have now with a EuroCardan shaft and a limited slip clutch disc pack as it will offer you faster cut out and release to protect the tractors drive train an avoid shock damage for the auger chain and gear box; call me a worry wort but the limited slip spring clutch pack will be a better fit as you will not shear a pin.
The last time I checked a No. 6 EuroCardan complete with limited slip friction disc clutch was $235-$275.00 U.S.D.
You may have to do some surgery to shorten it but other than adjusting it to add tension per the adjustment directions you will have little to worry about with it other than occasionally using some alcohol to wash the clutch surface free of dust if you use it on a filed mower or other attachment.
The limited slip disc clutch pack will be loose from the factory and you will need to release all the springs tension a little bit at a time to adjust it properly as the clutch will release too quickly as it is unadjusted.
On of the members used his mulch pile as resistance to adjust his blower with the the friction disc clutch assembly if I remember correctly which worked well as the mulch would argue to much and provided a sufficient resistance for the adjustment.
Some of the folks will disagree with my thought, but spending money now will save you aggravation later wherein the shear pin will shear and the shaft will still turn as well and then its a dud when the time comes and dealing with a shear pin issue in the dark is no fun.
The other worry is one of a shear pin that is too strong in steel shear strength as a limited slip clutch bypasses that issue.