X758 Autoconnect; Need some help
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Thread: X758 Autoconnect; Need some help

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    X758 Autoconnect; Need some help

    I'm working on an X758 that has an autoconnect deck. When I got the tractor, the mower drive shaft was missing, and the auto-connect bearing housing was busted and dangling. I installed a new shaft, bearing, and bearing housing, and that all went well. However, when the lift arms are in the lowered position to mount the deck, the drive shaft maxes out on length, and the female coupler ends up pointing upwards, rather than being parallel to the ground as needed to align with the mower deck shaft. I'm new to this arrangement, but I'm pretty sure it cannot work like it is. Ideas?

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    You replaced the shaft from the auto-connect coupler back to the trans PTO? Or something else?

    As for the fit problem, is it possible the mounting brackets for the auto-connect coupler are bent? If the 'bearing housing' (which I assume is the coupler) was mangled maybe they ran into something while it was lowered and bent stuff. That's the likeliest answer I can think of.

    Pics would be helpful

    Rob
    2016 x758 w/60" HC mower, 54" snowblower, MC519 bagger
    2010 2520 w/61" H130 loader, TA 42" forks, KK 60" Pro tiller, iMatch quick hitch, KK middle buster
    1996 345 - Traded
    Other toys: Stihl BR600 backpack blower; McCulloch chainsaws: 10-10S, 700, 805, 10-10; JD trimmer

    2520:__________________________x758:__________________________Faithful 345:___________________

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    You probably got it assembled wrong. Have you got any manuals? I have one for installing the auto connect "M171211". I guess I could try to scan it for you.

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    Quote Originally Posted by drs455aws View Post
    You probably got it assembled wrong. Have you got any manuals? I have one for installing the auto connect "M171211". I guess I could try to scan it for you.
    If you could possible scan it, that would be great! I did assemble it how it is laid out on the parts fiche. Thanks!
    Last edited by paoutdoorsman; 04-19-2018 at 03:27 PM.

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    Quote Originally Posted by BigBlue View Post
    You replaced the shaft from the auto-connect coupler back to the trans PTO? Or something else?

    As for the fit problem, is it possible the mounting brackets for the auto-connect coupler are bent? If the 'bearing housing' (which I assume is the coupler) was mangled maybe they ran into something while it was lowered and bent stuff. That's the likeliest answer I can think of.

    Pics would be helpful

    Rob
    Yes, I replaced the entire shaft from the mid PTO to to the coupler, including the auto connect coupler, the coupler bearing, and the bearing housing. The brackets appeared to be perfectly straight so I did not replace them.

    Click image for larger version. 

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    etcallhome's Avatar
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    Can you post a photo of the shaft, so we can maybe see what is taking place.
    Last edited by etcallhome; 04-19-2018 at 03:40 PM.
    Gene

    Have fun and be safe !!!
    USAR 8yr 8 mo SSG 99th ARCOM
    JD 1025R, H120 FEL 54" bucket, 54" mmm Auto Conn, 54" Front blade, JD back hoe ,JD IMatch, 48" Bush Hog tiller, Middlebuster from MF dealer, used King Kutter 5' rear blade, a new 47" JD Front blower and Original Tractor cab w/heater.
    We have a Red Honda Pioneer 700-4 (4 seater) w/soft top , doors, and winch.

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    Also, when you mention that the "driveshaft maxes out on length" that sounds wrong. The driveshaft is a slip-fit and should still have spare 'slip' available at any cradle position. Are you positive it is the right driveshaft?

    Rob
    etcallhome likes this.
    2016 x758 w/60" HC mower, 54" snowblower, MC519 bagger
    2010 2520 w/61" H130 loader, TA 42" forks, KK 60" Pro tiller, iMatch quick hitch, KK middle buster
    1996 345 - Traded
    Other toys: Stihl BR600 backpack blower; McCulloch chainsaws: 10-10S, 700, 805, 10-10; JD trimmer

    2520:__________________________x758:__________________________Faithful 345:___________________

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    Let's see if these pics work, and if they show anything.

    Yes, definitely maxxing out on length, and yes it definitely doesn't seem right.

    I guess I can't be certain I got the correct shaft, but I went to Deere's online parts fiche for an X758, and ordered the part number it gave for the autoconnect shaft. When I got the tractor it had no shaft or bearing with it.

    Click image for larger version. 

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    Click image for larger version. 

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    etcallhome's Avatar
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    [QUOTE=paoutdoorsman;2862338]Let's see if these pics work, and if they show anything.

    Yes, definitely maxxing out on length, and yes it definitely doesn't seem right.

    Here is a picture I found a few minutes ago. If no one can help you , I'm planning on going to Morgantown to mow with a x738. The deck at present time is off and will be installing . Would be glad to take photos to help if you are still having problems.


    Click image for larger version. 

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    Just a thought on the driveshaft there is a set screw,,, could the set screw be in to tight to keep the shaft from sliding in and out.

    For some reason when I installed the auto connect to my then 60" deck I had to loosen the set screw on the mower driveshaft for my 1026r
    Last edited by etcallhome; 04-19-2018 at 07:51 PM.
    Gene

    Have fun and be safe !!!
    USAR 8yr 8 mo SSG 99th ARCOM
    JD 1025R, H120 FEL 54" bucket, 54" mmm Auto Conn, 54" Front blade, JD back hoe ,JD IMatch, 48" Bush Hog tiller, Middlebuster from MF dealer, used King Kutter 5' rear blade, a new 47" JD Front blower and Original Tractor cab w/heater.
    We have a Red Honda Pioneer 700-4 (4 seater) w/soft top , doors, and winch.

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    Looks like your adjustment bolt nuts are way back. All the ones I have have done have been only a few threads in to be good.

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