Does the diff box need to be drained to lube DL spline? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 5 (permalink) Old 10-18-2011, 12:52 AM Thread Starter
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Does the diff box need to be drained to lube DL spline?

Does the spline go into the wet area of the diff?

-Robert
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post #2 of 5 (permalink) Old 10-18-2011, 05:58 AM
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No it don't go into the wet area of the diff. You need to pull the rear diff to get to the splines to lube them.
It's pretty easy to get it off, just time consuming as you have to pull the rear wheel too.
I use a 2X4 under the center stand, remove the shocks, and the wheel will drop down far enough to slide it out the back. You might have to remove your license plate to make a little more room.
There are 4 bolts that hold the diff to the swing arm, and there is a spring in there so the diff will want to slide off when you take the bolts out.
Check the splines and make sure they are in good shape, get a good hi heat moly lube, and grease it good.
Be careful putting it all back together. Tighten the 4 bolts down a little at a time till they are snug, then torque them to spec. After you get the rear wheel on make sure and torque it too, and use a new cotter pin.
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post #3 of 5 (permalink) Old 10-18-2011, 10:05 PM
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fergy`s spline lube write-up with pics:
https://www.vn750.com/forum/showthread.php?t=17274

This should answer all your questions about the drive shaft to pinion spline lube, as well as the final drive to wheel hub cleaning and lube.

Gordon

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post #4 of 5 (permalink) Old 10-18-2011, 11:45 PM
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There is a vent hole in the back of the final drive gear case, so if you lay it down on the back side, oil will drain out through that hole. Do not spray water on it without first plugging that hole. I almost forgot that the first time I had mine off, and decided to spray it with degreaser and hose it off.

After you get everything back together, you need to change the fluid anyway.

The hardest part of removing the rear wheel is removing the right muffler, so you can pull the axle out. Easy to do, but usually ruins the very expensive graphite gasket. I always keep a extra one on hand, just in case.

I am a motorcyclist, NOT a biker.


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post #5 of 5 (permalink) Old 10-19-2011, 09:24 AM
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Quote:
Originally Posted by VN750Rider/Jerry View Post
There is a vent hole in the back of the final drive gear case, so if you lay it down on the back side, oil will drain out through that hole. Do not spray water on it without first plugging that hole. I almost forgot that the first time I had mine off, and decided to spray it with degreaser and hose it off.

After you get everything back together, you need to change the fluid anyway.

The hardest part of removing the rear wheel is removing the right muffler, so you can pull the axle out. Easy to do, but usually ruins the very expensive graphite gasket. I always keep a extra one on hand, just in case.


If you undo the shocks you will not have to remove the muffler. You can raise the wheel above the muffler or if you have room you can lower it below the muffler.

02 honda sabre 1100
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