Weird noise from rear while turning wheel by hand - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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Rear End Woes? Splines Shot? Discuss it here!

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post #1 of 18 (permalink) Old 12-28-2018, 03:37 AM Thread Starter
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Weird noise from rear while turning wheel by hand

Hi, I tried to search similar kind of symptons from this forum but didn't find any.

When push the bike or turn my rear wheel by hand it keeps this weird noise. I haven't yet opened it because christmas took all the time. Any idea why it is keeping this noice? Notice that in the film it keeps the noise always exactly in the same position when turning the wheel. Sound is not metallic I think. Sounds more like rubber noise but the tyre is not touching anywhere. Or is it just missing oil or molygrease?

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post #2 of 18 (permalink) Old 12-28-2018, 07:37 AM
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splines between drive shaft and rear gear.
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post #3 of 18 (permalink) Old 12-28-2018, 10:41 AM
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Quote:
Originally Posted by michiganteddybear View Post
splines between drive shaft and rear gear.
Yep! More of a crunching metal type of sound.

Check those splines before another ride.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
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post #4 of 18 (permalink) Old 12-29-2018, 01:58 AM
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Third. Dead splines. What year is the bike?
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post #5 of 18 (permalink) Old 12-29-2018, 03:57 AM Thread Starter
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Thanks guys again. I'll let you know when I get some time to open the final drive. I hope I don't have to start hunting expensive parts 🙂 *fingers crossed*
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post #6 of 18 (permalink) Old 12-29-2018, 07:22 AM
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you dont need to open the final drive.

1 remove rear wheel (one bolt for wheel, 2 I think for disconnecting rear brake, 2 for disconnecting the rear shocks)
2 remove final drive from driveshaft/swing arm (4 bolts)
3 inspect the splines

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post #7 of 18 (permalink) Old 12-30-2018, 10:08 AM Thread Starter
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Thank you. Should I remove drive shaft to see both end splines? Can it be removed without removing the engine?
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post #8 of 18 (permalink) Old 12-30-2018, 11:16 AM
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The splines on the engine side of the driveshaft are usually just fine, but you can slide the shaft backwards slightly and pry back the rubber boot where the driveshaft tube meets the engine and inspect the splines there. No need to fully unseat the shaft from the splines, it's a PITA to get back on if you do. You can shoot a bit of grease on those if you want, but don't need to put the Moly lube on those like you do for the rear of the shaft.

If your splines wind up being bad, post here and search on eBay for used parts, we can help determine if the parts are in good shape to be used as replacements.
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post #9 of 18 (permalink) Old 12-30-2018, 11:18 AM
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Quote:
Originally Posted by jalaty View Post
Thank you. Should I remove drive shaft to see both end splines? Can it be removed without removing the engine?
The shaft can't be removed with the engine in place, it has to be pulled out the front, the yoke won't go through the swingarm to the rear. But with the final drive removed, the shaft can be slid back to expose at least part of the front splines. You can put a dab of moly grease around the splines and slide the shaft forward. No need to overdo it, excess grease will just sling out into the rubber boot.

It's the rear splines that are the huge problem. Catching it now will mean a $15 fix versus $250 or more if the rear splines fail.

Inspect both the driveshaft coupler at the rear, and the final drive splines to be sure the splines aren't destroyed. Clean out any red dust or debris. That noise means there will be some.

What year is your bike? We sorta track which years were dry. My 2003 was dry as a bone at 14k miles, but the splines were still ok.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #10 of 18 (permalink) Old 12-30-2018, 11:22 AM
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uber, I guess we're just on the same wavelength today.
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2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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