chim
Elite Member
It looks like your chain has excessive play. Could it be that your chain is about 1/2 link too long? The offset link - in place of a whole link - would shorten it.
Snowblower Chain routing, PUMA 54, Look right?
- Thread starter Firefighter Kubota
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It looks like your chain has excessive play. Could it be that your chain is about 1/2 link too long? The offset link - in place of a whole link - would shorten it.
Dave M7040
Elite Member
- Joined
- Dec 10, 2012
- Messages
- 2,757
- Location
- Williamstown Ontario Canada
- Tractor
- Kubota M7040 Nuffield 465
This chain tensioner system is from a more commercial, heavy duty blower by Pronovost.
It uses two idler sprockets to control chain tension.
Dave M7040
It uses two idler sprockets to control chain tension.
Dave M7040
leonz
Super Member
Hello Dave,
I still do not understand why they do not have the chain set up to have the connecting links on the outside facing the operator.
Me I am a big fan of H chain and sprockets due only to each link being a connecting link. If the pins are in line all the better as you
can use a long cotter pin to pin both links at one time- always loved finding them when they were pressed that way into the links.
leonz
I still do not understand why they do not have the chain set up to have the connecting links on the outside facing the operator.
Me I am a big fan of H chain and sprockets due only to each link being a connecting link. If the pins are in line all the better as you
can use a long cotter pin to pin both links at one time- always loved finding them when they were pressed that way into the links.
leonz
Dave M7040
Elite Member
- Joined
- Dec 10, 2012
- Messages
- 2,757
- Location
- Williamstown Ontario Canada
- Tractor
- Kubota M7040 Nuffield 465
In the alternative, the O ring motorcycle chain would be a big step up on a snow blower with the links being sealed and the master link a riveted one using a special tool.
The lube would stay in and the crud out.
I grew up in the era of old style motorcycle chains when the spring clip on the master link had to go on one way so any contact with a rock or obstacle would not dislodge it.
The master link in the older style of chains was always the weak point which the riveted link does away with.
I had a brand new 1971 Honda 750. Master link gave up under the power and torque. The chain cut a huge chunk out of the crankcase.
After that, riveted chain.
Dave m7040
OP
Firefighter Kubota
Platinum Member
Pulled the old chain, and based on the manual chain length it was almost 1.5" too long...
Moved the tensioner all the way to the top as high as it would go and went to install the new chain... Considering one is limited to breaking the chain in 2 link intervals, the new chain was either too long (although shorter than old chain) (when installed w connecting link and tensioner slid back down) it would still hit the metal in the chain slot barely... Or way to short...
Ran to TSC and got a pack of offset links... installed one and couldn't make it fit the connecting link (ei chain was a smidge too sort)
so, ended up cutting out the 1" piece of metal in the chain slot (someone chimed in in the kubota forum their 70" blower has one large slot)
Pulled the offset link, added the 2 links back , then the connecting link and slid the tensioner back in place...
Everything in place, chain isn't making contact anywhere.... and test drove it.... almost immediately blew the connecting link... Not sure if it was my mistake, (pretty sure the link plate and locking key was tight) the tensioner was slightly loose and chain made slight contact w bottom of chain slot, so might have knocked it loose...
Reinstalled chain, made sure tensioner was inplace and tightly secured. ran the blower... no issues... Only 2 inchs of snow here so not much to test it with... but ran the blower and rocked the machine etc...chain stayed tight and no issues... I still have the old chain if I need to go back to it...
Thanks for the help
Moved the tensioner all the way to the top as high as it would go and went to install the new chain... Considering one is limited to breaking the chain in 2 link intervals, the new chain was either too long (although shorter than old chain) (when installed w connecting link and tensioner slid back down) it would still hit the metal in the chain slot barely... Or way to short...
Ran to TSC and got a pack of offset links... installed one and couldn't make it fit the connecting link (ei chain was a smidge too sort)
so, ended up cutting out the 1" piece of metal in the chain slot (someone chimed in in the kubota forum their 70" blower has one large slot)
Pulled the offset link, added the 2 links back , then the connecting link and slid the tensioner back in place...
Everything in place, chain isn't making contact anywhere.... and test drove it.... almost immediately blew the connecting link... Not sure if it was my mistake, (pretty sure the link plate and locking key was tight) the tensioner was slightly loose and chain made slight contact w bottom of chain slot, so might have knocked it loose...
Reinstalled chain, made sure tensioner was inplace and tightly secured. ran the blower... no issues... Only 2 inchs of snow here so not much to test it with... but ran the blower and rocked the machine etc...chain stayed tight and no issues... I still have the old chain if I need to go back to it...
Thanks for the help
