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Thread: Final Drive Installation R1100RT

  1. #1
    Registered User drh205's Avatar
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    Final Drive Installation R1100RT

    I thought I'd wrap up my first spline lube this week end until I came to the part of re-installing the final drive.
    I've been trying without success to get the splined shaft of the final drive to slide into the drive shaft.

    Are there any tricks that make the job easier?
    I'm working by myself which I'm sure does make it more complicated.

    After 2 days of this I'm re-thinking chain drives!

  2. #2
    Benchwrenching PGlaves's Avatar
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    Quote Originally Posted by drh205 View Post
    I thought I'd wrap up my first spline lube this week end until I came to the part of re-installing the final drive.
    I've been trying without success to get the splined shaft of the final drive to slide into the drive shaft.

    Are there any tricks that make the job easier?
    I'm working by myself which I'm sure does make it more complicated.

    After 2 days of this I'm re-thinking chain drives!
    Take a shop rag or thick bandanna. Fold first into a triangle and then roll it into a tube. Then starting at one end roll it up until the roll is just thick enough to stick under the driveshaft to prop it up to center the driveshaft in the housing, with a tail hanging out the opening. Once the FD is installed you will pull the rag out using that tail.

    Once the driveshaft is centered in the swingarm opening the splines can be inserted.

    You still need to align the splines. I do it with the transmission in gear.

    To make the splines line up more easily I put a couple of wheel bolts back in the hub. That way I can turn the final drive a little to make the splines line up.

    I recommend you properly phase the driveshaft Universal Joints too.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  3. #3
    Registered User drh205's Avatar
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    Thanks Paul.
    I did try a shop rag but not folded the way you suggest. Also, the bike was in neutral, not in gear.

    Now for what I did do right; I put bolts in the hub and marked the two shafts showing the universal joints properly phased (plus I have a flashlight to shine up the swing arm to confirm the alignment).

  4. #4
    Benchwrenching PGlaves's Avatar
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    Quote Originally Posted by drh205 View Post
    Thanks Paul.
    I did try a shop rag but not folded the way you suggest. Also, the bike was in neutral, not in gear.

    Now for what I did do right; I put bolts in the hub and marked the two shafts showing the universal joints properly phased (plus I have a flashlight to shine up the swing arm to confirm the alignment).
    Good job!

    Get the shaft centered, tranny in gear, and then get the splines engaged.

    I use a big punch through the pivot hole on one side to sort of hold things until I can get a pivot started on the other side. A spare set of hands even just to hold a punch or big allen wrench in one pivot hole is very helpful.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  5. #5
    Rally Rat
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    Putting the FD on a floor jack helps too. It's just a matter of rasslin' with it until it goes in.

  6. #6
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    i hang the FD from the subframe, usig some zipties thru the brake caliper mounting holes a cinch strap. adjust its alignment height via the cinch strap. that, or support it from underneath as Jim suggested- but not having to both hold and align the FD assy at the same time makes it waaay easier.
    Ride Safe, Ride Lots

  7. #7
    Registered User drh205's Avatar
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    Thanks for all the suggestions.
    I'm confident that when I try to pop it in will be tomorrow night I'll be successful.

    . . . and that my next spline lube will be much much quicker!

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