The mysterious grease fitting?!
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    AJgrn78's Avatar
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    The mysterious grease fitting?!

    Ok...I'm installing my 54" snowblower on my 1025 and lubing the mid shaft...WHAT IN THE ACTUAL F IS THIS GREASE FITTING FOR ON THE YOKE??

    Look on the bottom, on the yoke...there is no slip yoke, nothing, it's in the yoke. the zerk for the u joint is right there on the right. ???

    The "does nothing" zerk SEEMS to take grease...any ideas from the collective?
    Attached Thumbnails Attached Thumbnails 20161213_201241_1481678214767.jpg  
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    Maybe they have channeled the grease to some useful area? Seems like that would weaken the casting though. Maybe try unscrewing the fitting and take a small piece of wire like from a twist tie and try and probe the passage behind the fitting to see which way its is heading.
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    AJgrn78's Avatar
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    I have no clue...I just pumped some grease into it.

    These joints are that strange type of cv joint with some kind of ball in the middle that limits the range of motion. it might have something to do with that?
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    must be something new, I don't have one on mine? Maybe someone in some foreign country is just playing with your mind
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    I would bet that there is a small channel going to both bearing cups on the yoke.
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    The grease fitting on the yoke is internally ported to the center pivot section of the double cardan constant velocity joint.
    As you know, this u-joint is a double cardan type constant velocity joint (double u-joint). The grease fittings that are on the actually u-joints grease the u-joint cross end cap bearings. The fitting that is on the yoke, greases the center section.

    This is a vitally important grease point. It must be greased on a regular basis when used.
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    I could have sworn this was for the johnson rod:

    https://www.youtube.com/watch?v=Bu-A8YfC4w0
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    Quote Originally Posted by Ray_PA View Post
    The grease fitting on the yoke is internally ported to the center pivot section of the double cardan constant velocity joint.
    As you know, this u-joint is a double cardan type constant velocity joint (double u-joint). The grease fittings that are on the actually u-joints grease the u-joint cross end cap bearings. The fitting that is on the yoke, greases the center section.

    This is a vitally important grease point. It must be greased on a regular basis when used.
    Great info, thanks!

    I did hit it with grease, there is the same thing on the short shaft on the snowblower. Again, I learn something new on this great forum.
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    Quote Originally Posted by AJgrn78 View Post
    Great info, thanks!

    I did hit it with grease, there is the same thing on the short shaft on the snowblower. Again, I learn something new on this great forum.
    Hmmm... my 54" blower doesn't have a fitting like this. Isn't the short drive shaft that is pinned to the blower the same for all tractors? Is this something that was added to new production runs?

    The latest 54" blower manual doesn't mention these zerks either.
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    Quote Originally Posted by jgayman View Post
    Hmmm... my 54" blower doesn't have a fitting like this. Isn't the short drive shaft that is pinned to the blower the same for all tractors? Is this something that was added to new production runs?

    The latest 54" blower manual doesn't mention these zerks either.
    I don't think it is a blower issue. It is the drive shaft for the blower that you buy separately for your machine. I think it is tractor model specific for the 1 series. I have a driveshaft for my 2305 but I have never used it because the blower is always on my 2520. I now have to look at the 2305 blower drive shaft and see if mine has this zerk. I know it has the CV joint on it.
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