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1983 CX650 Custom - 46,000 miles
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3 Posts
Discussion Starter · #1 ·
New user here, first time posting but have lurked for a few years. I've got a 1983 CX650C that I picked up several years ago for a first bike. It had the usual starting clutch issue and I started repairing it the day I got my endorsement.

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A few weeks ago my final drive started pouring oil. Turns out bearing closest to the wheel failed, so now I'm rebuilding the whole thing. Currently have all the parts to do so, the specialty socket, and a spare final drive on order just so I'm not in a rush and can do this done right.

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I've already opened and cleaned it up, only problem is I can't get the pinion out.

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The specialty tool (Pinion Joint Holder 07924-ME80000) is apparently impossible to find. Without it, I'm not sure how to hold the pinion in place in order to remove and reinstall the pinion nut.

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Strap wrenches just slide and I don't want to mess with the pinion teeth, so I either need to find that tool or make one.

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That is pretty much where I'm at right now. The bolt pattern for the flange should be pretty accurate but the location of the splines I am much less sure of. Not entirely sure how to accurately measure it's center. My plan is to prototype until it fits with a 3D printer and then test it to failure. Best case it works flawlessly, worst case I have to machine it at school.

All this brings me to two questions:
Does anyone know where I can just find this tool?
If not, does anyone know how I can accurately measure the location of those splines in relation to those bolt holes?
 

· Registered
1983 CX650 Custom - 46,000 miles
Joined
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3 Posts
Discussion Starter · #4 ·
Holy cow, that ain't cheap. I've never come across either of those links so that helps out a ton, now I know what the tool actually looks like. I might still end up making my own just to have the experience in doing so but I'll definitely look into using that metal strap method.
 

· Registered
1983 CX650 Custom - 46,000 miles
Joined
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3 Posts
Discussion Starter · #9 ·
I appreciate all the suggestions and replies. Spring break just ended so I've got to put this project on the backburner for now, but I am still slowly working on it. I'm planning on using PLA to make sure everything fits and lines up properly. After that I will start exploring how to make it strong enough to actually use. I believe the torque spec on that nut is 70-87 lb-ft but I'm expecting it to take more than that to break loose. Once I have a final design that fits, I'd be more than happy to share it.
 
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