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Thread: K75 Spline lube details

  1. #1

    K75 Spline lube details

    I recently bought a '90 K75C with 41,000 miles on it. I asked the seller if he knew when the final drive splines had last been lubed and he looked at me blankly. But, it was a beautiful bike at a nice price so I said "what the hell"

    Today I dismantled the final drive in order to inspect and lubricate the splines. I plan to us Honda Moly 60 grease, and everything that I've read says to make sure that you remove all of the old grease before re-lubing. BTW, there wasn't much grease to remove, just enough to dirty a clean rag.

    I think I got lucky in that the splines, to my untrained eye, look good. I've included a couple of photos and would appreciate comments. Do these splines look clean enough to apply new grease?

    So, here are my two questions: What is the best way to remove the old grease? Can I use a grease solvent like "Super Clean"? How about Kerosene?
    Second, when it's time to re-lube, just how much grease should I slop on these splines? Just enough to fill the recesses between the splines or should I go nuts?

    Thanks in advance

    IMG_1007.jpgIMG_1008.jpg
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  2. #2
    Those look like excellent undamaged barely worn at all splines.
    Paul Glaves - "Big Bend", Texas U.S.A
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  3. #3
    Fortis Fortuna Adiuvat Omega Man's Avatar
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    Looks real nice to me. Kerosene is my cleaner of choice. The harsh products like "brake clean" go too far. As for quantity of grease, I'm a bad one to ask
    OM
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  4. #4
    Registered User mlytle's Avatar
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    1/ old tooth brush and any degreaser
    2/ just enough. don't go crazy.

    how many miles on that driveshaft?
    Marshall
    92 K75s, 94 K75s, 09 K1300s

  5. #5
    Quote Originally Posted by mlytle View Post
    1/ old tooth brush and any degreaser
    2/ just enough. don't go crazy.

    how many miles on that driveshaft?
    41,000 miles

  6. #6
    Registered User AntonLargiader's Avatar
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    Not sure what you guys are looking at but I sure see some wear on those splines. The driving side seems to have a ridge among the whole length. It's not bad, but there is visible wear.

    OP, can you take a good photo of the splines on the driveshaft?
    Anton Largiader 72724
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  7. #7
    Quote Originally Posted by AntonLargiader View Post
    Not sure what you guys are looking at but I sure see some wear on those splines. The driving side seems to have a ridge among the whole length. It's not bad, but there is visible wear.

    OP, can you take a good photo of the splines on the driveshaft?
    I'll do that but cannot until Monday as I'm away for the weekend.

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