McKee snow blower sheer pin question

[bx24]

I got a great deal on this blower, and I am finally getting around to getting it ready for work. I thought I would see if you folks had any suggestions for my concerns ...

I see how the auger drive is set up with a sheer bolt, but I don't see how the fan is protected. Does the fan need one? Given that the power shaft right now is a smooth bore 1" drive w/key, I was hoping to simply buy the appropriate yolk ...

I have done a little searching for manuals online, but nothing yet.

 

[studor]

I don't have a McKee but on my blower the drive shaft yoke has a sheer bolt connection to protect the blower and the gearing. It looks like your blower should have the same set up. You will need that protection -- I have snapped the driveline shear bolt many times versus almost never for the auger. It is very possible for the auger to move stuff it to the fan that will jam it while the auger is still free to move.
Just about forgot -- I would also put a guard over the chain sprocket at the back to stop things from getting into the works and replace the cover over the gearing on the front for similar reasons (and a little more safety)
regards
Steve

 

[bx24]

Studor-

All of the guards are off right now to clean things up ... they will all be going back on .... thanks

Do you by chance have a picture of the way your main drive line is set up? I was trying to figure out how I might do it

 

[Willl]

Could you get a slip clutch to fit that shaft ?

 

[studor]

Sorry -- I don't have a pic and the blower is at the country place but basically the piece on the blower shaft is a flat plate that bolts by the shear bolt to a flat plate on the end of a u-joint on the pto driveline. The set up must be fairly common.
Does the 1"shaft have a hole in it? If so the yoke may attach with a shear bolt.
As Willl pointed out, the other way you coulds do it is get a pto slip clutch from HF or TSC and just attach the driveline straight on to the shaft .
Hope this helps
regards
Steve

 

[KubotaSam]

I have a Kubota B-222A snow blower which was built by McKee. It is very similar to your blower. Mine was designed to be mounted on the front of the old style B7100 Kubotas. They were driven by a v-belt. The v-belt would slip when something jammed the impeller so they did not need a shear pin on the input shaft. Mine has been converted to a 3-PH. I am not sure if this was a dealer option or not. It works great. Now the key-way is not used and the input shaft has a 3/8" shear pin where the PTO shaft slides onto the input of the blower. I have the Kubota manual which I can scan for you when I get back to school next week. My blower has a 1 1/4" input shaft which is a little beefier than the 1" haft you mentioned. Perhaps a smaller hole for the shear bolt would be better on your blower. Check out my snow blower here:http://www.tractorbynet.com/forums/newreply.php?do=newreply&noquote=1&p=1572255

 

[Farvernugen]

Hi All,

I have a Mckee model 220 front mounted snow blower on our Kubota L225DT tractor. The blower does a great job clearing the snow off the property after we use the 6' scraper.
We recently have run into a problem with the auger bearings, and am looking for someone who might have a copy of the manual in electronic format. We have tried to find one, but so far, no luck.

I think this is the same as a Kubota B-222.

Any help would be appreciated!

 

[bx24]

Sorry -- I don't have a pic and the blower is at the country place but basically the piece on the blower shaft is a flat plate that bolts by the shear bolt to a flat plate on the end of a u-joint on the pto driveline. The set up must be fairly common.
Does the 1"shaft have a hole in it? If so the yoke may attach with a shear bolt.
As Willl pointed out, the other way you coulds do it is get a pto slip clutch from HF or TSC and just attach the driveline straight on to the shaft .
Hope this helps
regards
Steve

Steve- No hole (bummer). I was thinking I could either drill a hole and use the smooth bore yoke or using the same yoke, weld two large washers (like on the auger shaft) ... one to the drive shaft and one to the yoke. I thought about a slip clutch (and maybe I may still go that route) but I was hoping not to spend the $100.

I have a Kubota B-222A snow blower which was built by McKee. It is very similar to your blower. Mine was designed to be mounted on the front of the old style B7100 Kubotas. They were driven by a v-belt. The v-belt would slip when something jammed the impeller so they did not need a shear pin on the input shaft. Mine has been converted to a 3-PH. I am not sure if this was a dealer option or not. It works great. Now the key-way is not used and the input shaft has a 3/8" shear pin where the PTO shaft slides onto the input of the blower. I have the Kubota manual which I can scan for you when I get back to school next week. My blower has a 1 1/4" input shaft which is a little beefier than the 1" haft you mentioned. Perhaps a smaller hole for the shear bolt would be better on your blower. Check out my snow blower here:http://www.tractorbynet.com/forums/newreply.php?do=newreply&noquote=1&p=1572255

Sam-

When I got this blower, it may have had a similar setup. The drive was actually hooked up to a "reversing gear" so maybe it was intended to go on the front of a tractor. I am pretty sure the shaft on here is 1", but I am going off memory since I am not near the blower (it is stored off site). Since performance (and unfortunately stress) is proportional to the shaft speed, maybe I should set up some pulleys to increase the shaft speed ....

 

[bx24]

OK, so if I went with this HF slip clutch .... I might have to adapt the shaft size. What shaft size is "ASAE Category 3"??? And if I use a slip clutch, should I still set up a sheer pin in addition to this?

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[KubotaSam]

Hi All,

I have a Mckee model 220 front mounted snow blower on our Kubota L225DT tractor. The blower does a great job clearing the snow off the property after we use the 6' scraper.
We recently have run into a problem with the auger bearings, and am looking for someone who might have a copy of the manual in electronic format. We have tried to find one, but so far, no luck.

I think this is the same as a Kubota B-222.

Any help would be appreciated!

I will scan the book for my Kubota B-222a. I will see if I can convert the pages into a PDF file. If not I can attach then as individual jpg files. Busy time for me , it may take a few days.