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I am preparing to mount a new set of tires and following GSMcleans informative instructions of removing the rear wheel. I have the wheel and tire off the bike with only a few minor problems.

The major problem I am having is getting the drive unit to separate from the wheel hub. It says to just slide it out but it appears to be caught on something. It will move slightly in and out but only a fraction of an inch until it hits something. I have tried sliding a screwdriver into the space and prying lightly but that only crimps the lip of the drive.

What am I missing or is there a trick here?

:shock:
 

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Weird.

No. No trick.

Any time I've taken mine off, it slides right off. I can't imagine what could be catching it.

Sorry couldn't help more.
 

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rb7632 wrote:
I am preparing to mount a new set of tires and following GSMcleans informative instructions of removing the rear wheel. I have the wheel and tire off the bike with only a few minor problems.

The major problem I am having is getting the drive unit to separate from the wheel hub. It says to just slide it out but it appears to be caught on something. It will move slightly in and out but only a fraction of an inch until it hits something. I have tried sliding a screwdriver into the space and prying lightly but that only crimps the lip of the drive.

What am I missing or is there a trick here?

:shock:
HI, I don't know if you're running saddlebags or have a trailer hitch, but if you have a clear path out the back remove the three bolts which attach the entire rear differential to the drive shaft splines and slide that critter (wheel, diff and all) straight out the back. It sounds to me like the wheel hub splines may have worn and gotten little "lips" on them. That would account for your problem with removing the hub assembly. If the hub hasn't been serviced in awhile, the grease which is spose to be on the splines wears away and the splines begin to wear. I've had this same problem on a few older wings I've worked on. Even if it's a pain, it may be worth the time/ effort to clear a path out the back of the bike and pull the rear diff anyway. If the splines come out "dry" do yourself a favor and change the rear diff oil while you're workin' back there. I use a light coating of bearing grease on the splines whenever I reinstall the rear wheel. I HAVE seen splines almost ALL of the way worn gone (NOT a pretty sight).
Don't forget to pump a few squirts of grease into the grerase fitting just ahead of the rear differential. Lube is a good thing.:dude:
 

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Discussion Starter · #4 ·
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Sounds like you might be on to something squirts but I had not problem getting the wheel off. It is getting the rear drive unit away from the wheel that is the issue.

If these "lips" have formed as you indicate, how do I get the rear drive off over them? Is there a way to insert something from the opposite side and tap or drive the unit off?
 

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Brother, I have had to literally hammer a rim off of the splines before. If I have to smack on something like a rim. I use a piece of 2X4 and smack through it. I know some folks reading my "Caveman" ways are probably wincing right about now, but I figure I can "fix" anything with a big enough hammer and hard enough WHACKS. =) Don't be surprised if a bunch of red powdery stuff falls out... Last time I had a wheel stuck on like that, the splines had been eating themselves away and all that was left was powder. Hopefully, yours isn't in such a bad state. Good luck. =)
 

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rb I think I understand you removed the wheel /drive assy at one time and now the drive assy will not seperate from the wheel . Normally it should slide of the drive spline and the driven spline hub would remain with the wheel .

I think its not been greased with Moly 60 as required . This will allow the splines to wear a great amount . ITs very likely they are worn . With wheel laying on the brake disc side ,such as resting on a couple 2x4s. Try and pull straight up on the drive hub while turning the drive input shaft back and forth . Hopefully doing this will allow you to line up the drive spline with the splines on the damaged driven spline hub . This is to get them aligned to come past the " Lips " mentioned by squirts .



wish you luck .
 

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Discussion Starter · #8 ·
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I'll try the moving the splines around while pulling but that sounds like a two man operation. I Guess I'll have to get some help for that operation.

Thanks for the ideas guys.

I guess worst case is that I mount the tire and replace the whole unit without removing the rear drive but that means no balancing on the rear tire. Is that a problem?

I really wanted to replace the bearings also and get the MOLY 60 in there.
 

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I would not put it back together without seperating them and doing the Moly 60 lube . I suspect you will actually be looking for a driven spline hub to put in the wheel . I hope I am wrong .
 

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Great (well maybe not great) but Good news anyway.

With the assistance of my trusty helper (wife) we got under both sides of the drive unit and prying gently go the unit to separate. It was literally dry as a bone. The good news is though that the splines look to be in pretty good shape and I think that when I get her all greased up with the Moly Lithium grease it will be fine. I will of course also replace the oil in the drive gears and grease the fitting in the drive housing.

I am replacing the wheel bearings front and rear and also replaced the rear brake pads (replaced the front when I had it apart this winter.

New tires and a balance job and she should be scooting down the road again real soon.

Thanks for all the great ideas and support. I LOVE THIS FORUM!
 
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