Driveline Clearance Question
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Driveline Clearance Question

  1. #1
    Wet
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    Default Driveline Clearance Question

    When setting the depth on the driveline, do you just slide the yoke on and then back it a little, or do you tap it down and back it off? I've always tapped it down, then back it off. I like as much spline to mesh as I can get.

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  3. #2
    Wet
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    Over 50 views, and I get the 50 guys who have never set an engine.

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    Senior Member UNASHAMED's Avatar
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    not really get'n what your wanting to know? Are you talking about sliding the driveshaft onto the pump shaft? If so you want at least a 1/4 of play between the housing and the driveshaft.
    "Don't make me get my penguin"

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    Senior Member miketeast's Avatar
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    Quote Originally Posted by Wet Dream View Post
    When setting the depth on the driveline, do you just slide the yoke on and then back it a little, or do you tap it down and back it off? I've always tapped it down, then back it off. I like as much spline to mesh as I can get.
    what you doing 'tappin' in the yoke onto the splines in the first place.

    This dont sound right. A new yoke and shaft are nicely tight, but there is still clearance. The yoke lands against the snapring, i think. After a few runs it will get a little looser, but it shoulnt bind. Must be a bugger on it or something. Is there a relief hole? Maybe hydraulic binding by the grease and that is why it is so tight? I believe mine is open at that end.

    and you need at least as much clearance as is necessary to remove the driveshaft without moving the engine.

    I think i remember that there are about 2" available spline and that it was 'common' knowledge that you needed at least 1".

    With the amount of torque you are putting on it i would go for as much as possible too. (thats right the yoke/shaft splined interface dont give a f**K about horsepower, only torque.

    overgrease the bearing while you are at it.
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    Wet
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    So 1" engagement is acceptable?

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    Quote Originally Posted by Wet Dream View Post
    So 1" engagement is acceptable?
    NO...... I just left the driveline shop looking for a new yolk because mine is loose on the shaft. The professional at the driveline shop says of the 2" make sure you have at least 1-5/8" engaged. He also went on to say that insufficent engagement will cause premature failure.

    Hope this helps you out.....

    Chris

  9. #7
    Senior Member miketeast's Avatar
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    Quote Originally Posted by Wet Dream View Post
    So 1" engagement is acceptable?

    no, not in your case. I like the 3/8" mentioned above. I only have 1/4"...just enough to get the driveshaft out without moving the motor, and of course, to prevent any thrust on the motor produced by the pump.

    what i seen, the larger the angle the more there are micromovements on that splined shaft. If the shaft and motor arent parallel there is a great deal of micormovement (and vibrations) and wear happen much faster. I use mercruiser spline grease on mine. Cant tell you if it does any good. I dont let it touch the bearing or bearing grease though.

    When i grease the bearing i pull the shaft and pull out the old grease with my finger. Keeps the temps from rising so much after greasing it.


    Might i suggest a strapon? Been using one for years on the bearing housing. Very revealing.
    Last edited by miketeast; 06-01-2010 at 03:38 PM.
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  10. #8
    Wet
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    I have 2 strap-ons!

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    Mine came built on hahaha
    Quote Originally Posted by Wet Dream View Post
    I have 2 strap-ons!
    "Don't make me get my penguin"

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