325 48c Belt Virbration
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Thread: 325 48c Belt Virbration

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    Gebada22's Avatar
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    325 48c Belt Virbration

    I have a 2004 325 with a 48C deck. The deck belt is a brand new JD belt, but I am getting a lot of belt vibration. I notice in on the rear portion of the deck. The spindles are straight and level, but I am wondering is the tension springs have maybe slackened over time. I do not believe that I should see the belt vibrating like I do, but would great appreciate any thoughts. Thanks.
    John Deere 2011 2320, 200CX FEL, JD 46 BH, IMatch, RC1048, Countryline 6' Back Blade, Countryline 5' Rototiller, Ken's Bolt on Hooks, JD Ballast Box, Artillian Pallet forks, Grapple and Diverter, Bro-Tek Wheel Spacers, ROPS Warning Flag, Millcreek 63" Aerator, JD 21 Utility Trailer, 6ft Brillion Cultipacker.
    John Deere 2004 325
    John Deere 2017 X590

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    HydroHarold's Avatar
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    How excessive is the vibration and is the belt rubbing anything due to the movement?

    First thing before springing for a new spring is to check each and every pulley on the deck. First slack off the spring,* then check down in the pulley grooves for some foreign stuff built up/stuck in them. I have this exact year mower on a GX335 and I do see some vibration, nothing I would call excessive.

    "Spindles are straight", are all the idler pullies straight and tight on their shafts? Any loose tensioning arms, they are sort of long so I'd check the mounts and pivots and amount of up/down movement there...

    *I use a short length of small chain (skid chain side link chain is perfect), hook one end on the outside of the hook the spring and a decent screw driver through a link near the edge of the deck. I brace my feet (sitting facing the deck) against the edge of the deck and ease the spring off using the screw driver as a "T-handle". Goes on just as easy as you have full control of the tension and the spring can't get away.

    Good luck...
    Gebada22 likes this.
    2013(12) 1026r TLB 54 QH front blade, 54D Auto Connect deck, ballast box, carryall

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    Gebada22's Avatar
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    Hydro, thanks for all the information. I'll look at all of these items you listed.
    HydroHarold likes this.
    John Deere 2011 2320, 200CX FEL, JD 46 BH, IMatch, RC1048, Countryline 6' Back Blade, Countryline 5' Rototiller, Ken's Bolt on Hooks, JD Ballast Box, Artillian Pallet forks, Grapple and Diverter, Bro-Tek Wheel Spacers, ROPS Warning Flag, Millcreek 63" Aerator, JD 21 Utility Trailer, 6ft Brillion Cultipacker.
    John Deere 2004 325
    John Deere 2017 X590

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