Just bought a used JD 606 rotary cutter and it sure seems to turn slow....
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Thread: Just bought a used JD 606 rotary cutter and it sure seems to turn slow....

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    stvbird's Avatar
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    Just bought a used JD 606 rotary cutter and it sure seems to turn slow....

    Yesterday, I bought a used JD 606 6' rotary cutter from an old man who has just had it sitting for fifteen years. It's mechanically sound, well greased, and everything works smooth. However, it sure as heck seems to turn slow. The clutch is good and with the tractor humming you can watch the blade go around and pretty much count the swings. It's almost like it is geared crazy low, but it has the factory decal on it from JD that says it's for a 540 PTO. I know it's not the tractor, it spins my finish mower just fine.

    Any thoughts?

    Thanks...

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    gbnpp05's Avatar
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    I'd put some witness marks on the different connections like the clutch fore and aft sections and any other connections in the drive portion of the unit, run it and see if the witness marks are still lined up.

    Does the clutch connect to the gear box with a bolt or is it on a spline. Bolt could be broken if connected with a bolt and the only thing making the blades turn is the friction between the affected coupling point.(I've seen bolts break off in the center but the outer parts still stay in the holes due to corrosion holding those pieces in place)

    By the way, I know nothing about the rotary cutter you speak of but the above is my thinking of what could be wrong.
    Last edited by gbnpp05; 03-14-2015 at 08:55 AM.
    Brian

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    I have to agree. I would suspect that either the clutch spring bolts are loose, hence the plates are slipping or there is a broken shear pin/bolt.
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    CNGreen's Avatar
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    I agree with the others, sounds like something is loose on the drive line
    2014 John Deere 5100E H240 FEL 6' Rakemaster Root Grapple, 2016 Woods PSS72 food plot seeder, 2013 John Deere XUV 550 S4 2015 Orsi 12' boom mower with flail head, 2016 John Deere 4105 with front end loader, 2016 John Deere MX6, 2018 Everything Attachments 55" Wicked Grapple. 2018 Everything Attachments Severe Extreme Duty 6' Landscape Rake, 2018 John Deere 1025R TLB with 54D quick connect deck [SIZE=2][COLOR="#008000"]

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    If shear bolt/slip clutch is functioning correct I'd be tempted to count teeth on gears in gearbox. Gear(parts key 10) = 21 teeth, gear (parts key 19) = 29 teeth
    Attached Thumbnails Attached Thumbnails WP2320_________UN01JAN94.jpg

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