4x4 issues
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Thread: 4x4 issues

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    Yanmar22's Avatar
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    4x4 issues

    Hello All,

    I have a JD 855 4x4 that recently started having problems. When backing up in 4x4 there is a audible popping sound from the front wheels/ axle. I can feel the pop in the floor board as well. This does not happen when the tractor is in 2 wheel drive. Do any of you have a clue what this might be?

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    Captain Hook Kennyd's Avatar
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    Welcome to GTT,
    Sounds like a broken tooth in the front gear set, I'd change and inspect the fluid, and jack up the front so you can spin the wheels and listen.
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    Kenny

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    Quote Originally Posted by Kennyd View Post
    Welcome to GTT,
    Sounds like a broken tooth in the front gear set, I'd change and inspect the fluid, and jack up the front so you can spin the wheels and listen.
    Also check the U joints in the front drive shaft. Hold the yoke in one hand and move the shaft with your other hand. Try to move the shaft in all directions especially clockwise/counterclockwise. Having the front end jacked up will help. If you find any kind of play it needs a new joint.

    Wear gloves and be careful not to pinch your fingers.
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    Make sure all your lug nuts are tight.
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    Yanmar22's Avatar
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    Thanks for the input all. I had the chance to hop under the tractor today and this is what I found...

    One of the lugs was loose. I tightened hoping it would be a easy fix. Unfortunately, this was not the case. Still have an issue.

    I jacked up the front end and when in 4x4 the wheels spin ok for a bit, then they bind and will not spin. I change direction of spin and it will spin for a bit then bind up again. Also of note, the wheels spin in opposite directions (when I spin the front left wheel clockwise, the front right wheel spins counter clockwise). Is this the differential?

    Does this sound like a broken gear? Does anyone have a clue what this might cost to fix?

    Can I run the tractor in 2 wheel while I am waiting to get this taken care of or should I lay off of it until it is fixed.

    Thanks
    Last edited by Yanmar22; 07-17-2017 at 08:30 PM.

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    Captain Hook Kennyd's Avatar
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    Y22:

    Wheels spinning opposite is 100% normal, yes it sounds like a broken tooth-maybe more at this point. Even in 2WD your risking more damage since the gears are still spinning. Cannot comments on cost, sorry.
    Yanmar22 likes this.
    Kenny

    -John Deere 3720 Deluxe Cab TLB
    FEL, MMM, Artillian 42" Forks and Modular Grapple, I-Match, Ballast Box, Trac-Vac 854 (for sale) and lots of other STUFF.
    -John Deere 455 w/60" MMM


    Bolt on Grab Hooks and other cool stuff are now for sale!!

    Visit our YouTube Channel

    My Equipment:
    John Deere 3720 Deluxe Cab, 300cx FEL, 366 Front Blade, 59" Front Snowblower, Ballast Box
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    Quote Originally Posted by Kennyd View Post
    Y22:

    Wheels spinning opposite is 100% normal, yes it sounds like a broken tooth-maybe more at this point. Even in 2WD your risking more damage since the gears are still spinning. Cannot comments on cost, sorry.
    No way of knowing the cost until you open it up.

    I'll agree continuing to use it will cause more damage.

    If it is binding when you turn one wheel while the other turns opposite it is most likely broken spider gears. If it binds when turning the drive shaft it's most likely the ring and pinion. Either way broken teeth will bounce around inside causing more damage.
    buckteeth445 and Yanmar22 like this.
    2014 X540 with HDAP tires, 54" deck, brush guard, arm rests and cargo bag.
    JD 48" plow with angle from seat kit & heavy duty skid shoes.
    4 suitcase weights and chains.
    JD tow behind spreader.
    JD 42" lawn sweeper.
    JD 10P cart.
    JD JS61 RWD walk behind mower.
    Stihl KM110 power head with pole saw, shaft extension, power scythe, curved shaft edger, 2 straight shaft cutters (string & blade).
    Stihl MS180-CBE 16" saw.
    Stihl SH86C hand held blower vac.

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