Snowblower 3pt snowblower woes
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Bob_Trevithick
Platinum Member
I got a JD 724D snowblower last winter, and I sheared a few bolts too.. until I realized that I was getting hung up in some small brush and branches underneath the snow. I have no idea what grade bolts I have.. it's just what the Deere dealer gave me when I bought more. But it's hard to imagine the bolts being so weak they shear under a simple snow load.
Something sounds wrong, but maybe I just haven't run into really crappy shear bolts before.
Good luck with it!!
Bob Trevithick
Something sounds wrong, but maybe I just haven't run into really crappy shear bolts before.
Good luck with it!!
Bob Trevithick
WSchubert
Member
I have a new allied 74" blower and if I remember correctly it came with grade 5 shear bolts. I've used it three times already this season with good results. One of the times was with slushy snow. It clogged up three times on a 1/4 mile driveway. Each time it clogged it was in an area with little snow. Seems if I have a lot of volume its able to push the snow through, but when it got down to about 2 inches on the ground it had a chance to build up in the chute. The other two times it was just heavy snow (about 6-8 inches) and I had no problems. So far I have not sheared any shear bolts, even tossing some hefty rocks.
The manual on my blower indicated to never run it over 540rpm, so I have never have.
The manual on my blower indicated to never run it over 540rpm, so I have never have.
Pks
Platinum Member
- Joined
- Apr 6, 2000
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- 773
- Location
- Saline, Michigan
- Tractor
- Kubota L3700SU, Cub Cadet 1430, Hustler Super-Z 66in, Vermeer 1250
RichZ,
One test I always make during my preseason shake down, is to rotate the blower impeller by hand (while not connected to the tractor). If your hand cannot easily rotate all the parts, then there is a problem. Look for hay and other grasses.
Another test is to try and rotate the auger rakes while the shearpins are removed.
After reading all the posts, I suspect the rake(s) won't move by hand. For the shearpin to break, the power shaft will rotate but the auger rake won't. Look for grass or a missing bearing spacer at the end of the auger rake tube. IMHO, something very strong is holding that auger.
One test I always make during my preseason shake down, is to rotate the blower impeller by hand (while not connected to the tractor). If your hand cannot easily rotate all the parts, then there is a problem. Look for hay and other grasses.
Another test is to try and rotate the auger rakes while the shearpins are removed.
After reading all the posts, I suspect the rake(s) won't move by hand. For the shearpin to break, the power shaft will rotate but the auger rake won't. Look for grass or a missing bearing spacer at the end of the auger rake tube. IMHO, something very strong is holding that auger.
Anonymous Poster
Epic Contributor
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- Sep 27, 2005
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- 29,678
<font color=blue>...something very strong is holding that auger...</font color=blue>
Peter,
You just don't realize the strength of that snow up in Washington County, New York...
I think this is one of those Florida snowblowers.../w3tcompact/icons/wink.gif
Peter,
You just don't realize the strength of that snow up in Washington County, New York...
I think this is one of those Florida snowblowers.../w3tcompact/icons/wink.gif
RichZ
Veteran Member
- Joined
- Apr 4, 2001
- Messages
- 1,858
- Tractor
- Kubota 4630 with cab and loader
Peter, pay no attention to John, he's stuck in silly mode!
You are right. I missed it, but I had an adjustment done on my 3ph, and my friendly tractor repair man looked at the blower. There was a pebble stuck in there. I didn't think that would be enough to do it, but both he and my silly friend John assure me that this is all it would take.
My friendly tractor repair man advised me to use a backblade instead of a blower until the ground freezes sufficiently to prevent it from sucking up pebbles, rocks or gravel. He also suggested that I adjust the shoes on the blower to raise it a little.
I think this closes the case of the blown shearpins!
Thanks everybody for all your help!
Rich
You are right. I missed it, but I had an adjustment done on my 3ph, and my friendly tractor repair man looked at the blower. There was a pebble stuck in there. I didn't think that would be enough to do it, but both he and my silly friend John assure me that this is all it would take.
My friendly tractor repair man advised me to use a backblade instead of a blower until the ground freezes sufficiently to prevent it from sucking up pebbles, rocks or gravel. He also suggested that I adjust the shoes on the blower to raise it a little.
I think this closes the case of the blown shearpins!
Thanks everybody for all your help!
Rich
