78 CB750K7 rear hub retaining ring woes

[mule169]

So,

I traded a website for a bit of a beat down cb750 to have as a project. I was pulling apart the rear wheel t have the hubs/rims powdercoated. I didn't have a pin wrench or any "proper" tools to get the rear bearing retaining ring off, but I have a co-worker who "had a buddy" who has "built tons of bikes" and could probably just do it really quickly.

Against my better judgement, I figured I'd save myself the hassle of making a tool and just let "buddy" pull the retaining rings off the front and rear. This is what I got back...

I haven't talked to him directly but I'm guessing he tried using a punch on the notches, and just deformed them to the point where the threads galled because the notches on the front hub retaining ring are mushroomed a bit. Thankfully he just gave it back to me before he chowed it to pieces too.

I guess my question at this point is, is there any way to repair the damage to the retaining ring threads, or am I looking at finding a new rear hub to build a wheel off of? I'd imagine buying a tap that big, or taking to a machine shop is going to be pretty damn expensive.

Anyone have some thoughts (other than violent thoughts about co-worker and his "buddy")?

 

[dualitymike]

Well, the good news is you can still get that retaining ring and the one that screws into it from your local Honda dealership. They're not too expensive either. Here's a link you can use to get the part numbers to take to your local dealership. They are parts #4 and #5 on the diagram.

http://www.servicehondapsn.com/fiche_section_detail.asp?section=2451906&category=Motorcycles&make=Honda&year=1977&fveh=131105

My guess is that the guy didn't drill out the swages and just forced it to turn.

Ps. Your bearing is damaged too, and will have to be replaced.

 

[Tune-A-Fish]

If you have trouble finding a solution to the problem, I have a spare hub for this in good shape.

 

[Finnigan]

I'm about to try and take mine out, you have to drill out the punch marks???

 

[Tune-A-Fish]

Yes, you don't have to drill deep just enough to remove the indent, best to sharpen a punch and center punch them to align the drill. If you don't have the tool you can make one with some flat stock and two roll pins, just drill a chunk of bar stock to match the notches and drive the two roll pins the holes the same depth as the lock ring notches (just like a grinder disk tool) then use a crescent wrench to turn it.