54 inch snowblower chain rubbing on housing
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    tigerwil's Avatar
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    54 inch snowblower chain rubbing on housing

    It doesn't matter how tight I put the chain it always seems to hit the top of the housing. Also it doesn't seem to fit tight on the sprocket, could it be worn down. In picture on the left you can see where it is rubbing on the housing and in the picture on the right you can see how the chain sits on the sprocket. It goes on fine but after a few turns it looks like picture 2.

    Do you think I need to replace that chain sprocket?
    Attached Thumbnails Attached Thumbnails IMG_0394.JPG   IMG_0392.JPG  
    John Deere 2520 (R3 Tires), 62D MMM (mechanical lift and deck lockup kit), 54" Front Snow blower, Frontier RB2060L Rear Blade

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    BigJim55's Avatar
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    it looks like to me, that ur chain is wore, cause of how on the right side of sprocket, the chain is seen wanting to climb the teeth on the sprocket, and then settle down on the left.

    i think if it was me-----new chain, and sprocket, so that chain fits the sprocket better. good luck.
    jim

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    I would recommend replacing the chain and both sprockets.
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    Superglidesport's Avatar
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    That sprocket appears to be worn. I'd be inclined to replace the drive pinion sprocket, #7, p/n AM14107. The driven sprocket, #9, p/n AM38206 and the chain, #11, p/m AM121965.

    I'd also check all of the bearings, #3 (3) p/n JD8665 as they've been known to go south. They're likely worn as well.

    Click image for larger version. 

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    Last edited by Superglidesport; 12-17-2017 at 08:24 PM.
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    tigerwil's Avatar
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    Thanks for the advice

    Hey guys I really appreciate your advice. I will order a new chain and sprockets.
    etcallhome likes this.
    John Deere 2520 (R3 Tires), 62D MMM (mechanical lift and deck lockup kit), 54" Front Snow blower, Frontier RB2060L Rear Blade

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    chain is stretched and worn out.

    the teeth that I can see on the sprocket don't look too bad.

    i would just replace the chain
    etcallhome and em14 like this.

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    SulleyBear's Avatar
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    I am with SGS, replace the sprockets and chain and also carefully check the bearings as the chain is hitting the housing so either the chain is stretched, the bearings are allowing the sprocket to move which can result in the chain hitting the housing.

    i have broken chains but never had one stretch enough to hit the housing.

    I found I have my chain made at a local small engine shop with a master link and it's easier to install and seems to fit better.

    Also, make sure you use a really good chain lube in the chain and sprockets at all times. Ideally, something made specifically for chain use, like this;

    https://www.amazon.com/DuPont-Chain-...ain+lube+spray

    or this

    https://www.amazon.com/Lucas-Oil-103...ain+lube+spray
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    SulleyBear's Avatar
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    Quote Originally Posted by tigerwil View Post
    Hey guys I really appreciate your advice. I will order a new chain and sprockets.


    I always keep a spare chain in the spare parts drawer as when the chain breaks, your done. If you have a spare, you can be back up and running in a matter of half an hour or less........Chains are a big wear item and they fail, as you see.........

    Also double check and make sure something isn't loose in the rotating part of the blower, like the bearing plate bolts, etc.

    Does your blower feel like it's as balanced as it was when you first got it? With that kind of wear on the sprockets, I would be checking to make sure the PTO shaft is greased, the U joints in the shaft are tight, etc.

    The wobble of something out of balance will take out the chain and sprockets and bearings, etc.

    Have you broken any shear bolts in that blower? Just curious......................
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    jgayman's Avatar
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    Quote Originally Posted by yesdear View Post
    chain is stretched and worn out.

    the teeth that I can see on the sprocket don't look too bad.

    i would just replace the chain
    When the chain is worn like shown on the photo you want to replace both the chain and sprockets. The teeth that I can see look like saw teeth. :-)
    tj1 likes this.
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    replace both never put good chain on worn sprocket or visa versa
    fdmars, ErikR and tj1 like this.

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