1971 CB500K0 Resto 3/71 VIN 1000896

[AshimotoK0]

Heated and soaked the retainer with PlusGas, several times during the day and welded a 4 foot bar to the old sprocket. Discussed with Bryan and we both had the same thought that if you pass a threaded rod through the bearings to  clamp the removal tool to the  retainer/hub, then this  helps prevent the 4 pegs riding out. With a 5 foot bar on the removal tool, I  finally got it to unfasten by 3/4 of an turn but had to get home so left final removal until tomorrow. Still 'kin tight though ! Mine was definitely staked inside  the 4 peg holes. possibly by a PO /possibly because it's a very early production VIN. Dunno but can't believe the extraordinary high torque required to move it.

[AshimotoK0]

Hallelujah !! it's out and not too much damage ... definitely re-usable. What a tw*t of a job that was. Thanks to everyone for you advice plus Bryan & Mick ( sounds like a dodgy Lowry song singing duo from way back),  who had a spare on hand if I f'ked up. See photos ..definitely staked !!!

Few pics to bore you with.

IF ANYONE IS DOING THIS JOB, ONCE I HAVE REPLACED THE BEARING,  I WILL GLADLY SEND THE TOOL TO YOU.. not the bars though ... too heavy.

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[JamesH]

Phew, great work here and absolutely loving this thread. You're a very skilled and patient man indeed....

[hairygit]

No good in your case Ash as you were already stripped to the hub, but for anyone else trying this, it's much easier to leave the tyre on the complete wheel. Then clamp the removal tool firmly in a good bench vice, place the retainer on the tool, and turn the wheel. You can apply a lot of turning force like that, and it has never failed me yet!

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[JamesH]

Now he tells you ;-) !

[hairygit]

I know Jamesh, but Ash had obviously stripped the wheel before mentioning it in the thread, and I very much doubt he'd have wanted to put it all back together just to get the retainer out!

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[JamesH]

:-) was only joking. He isn't hanging around on this one. Good tip though thanks for sharing.

[AshimotoK0]

Yes you, are correct, I have removed about a dozen 'standard' retainers in my time from just the hub. With hindsight on this .b*st*rd ..should have left wheel intact. Still took an extraordinary torque to remove though. Dunno if the one on eBay that the recently appointed custodian of Dave Silvers museum sells would be man enough for the job. Think I did mention in an earlier post that I wished I had left the wheel intact. No sign of any threadlock BTW just  staking.


Quote from: Oddjob on December 09, 2015, 11:26:02 pm
I find that a good shock will sometimes start them off, once you have them going things go a lot easier. Try whacking the tool with a heavy hammer to see if you can shock the threads loose. Sometimes you need to do this in order to break the thread locks grip.

As far as I recall the rear retainer is not staked, unlike the front one.

Yea FBH I guess. Problem is, and it's my fault entirely, I stripped the wheel first not realizing what a b*st*rd these are to remove. Think I will weld a bar to the old sprocket to get a good purchase on it. Stripped the alloy retainers from about 12 Honda hubs, without the proper tool, over the past two years and never ruined one yet. But these are something else.
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[AshimotoK0]

Well you can see from the photo it was staked and don't forget this is VIN less than 1000 so Honda may have changed assembly methods early on but also  there was evidence of a PO removing the retainer to replace the bearing . TBH the bearing is probably fine but there is no way I am rebuilding a bike of unkown history and reusing wheel bearings. I did admit that I should have left the wheel intact but that's the thing with forums, you try to do a warts and all log and in doing so embarrass yourself 

[totty]

It was staked on my 550K3, but I have no way of knowing how it left the factory.

[JamesH]

Nothing embarrassing about your approach ash. I'm more embarrassed about selling a bike to you in that state!!!

[AshimotoK0]

No need to be embarrassed James .. well chuffed with it .. it's generally much better than I thought and it means I will now own one of the first 20 batch of UK CB750K0's and a CB500K0 from the first month of production. I just have to show you inside the point cover .. a real Ashimoto setup.

Not sure on the bearing yet Ken , I just got the retainer out and then  got on with my day job. I will post as soon as I get it out.

[AshimotoK0]

Removed bearings tonight both made by NTN  Ken (Oddjob).

[AshimotoK0]

Can't say I recognise that manufacturer Ash, I think maybe they have been changed in the past. Sometimes the parts book would say what make they were as standard but I've just looked and it doesn't. Might be right but I don't think so. I think maybe they were Koyo bearings as standard.

Oh found the front disc today BTW, just need to remove it. Might have a look and see what bearings are in that wheel as it looks like it's never been touched, thought it might have been the wheel where I'd had the rim rechromed and used chromed spokes but these look standard. Disc will need a good cleanup Ash but it is undrilled.

Yes bearings actually looked pretty good (will change anyway) and previous signs of removal of retainer, so probably changed by PO. Disc sounds good.. any look with finding the 3-hole rear guard please Ken ?

[ST1100]

... I have found some pics of the 3 hole...

Interesting, are all fenders supposed to have the studs in the top mounts, or is that a K0 thing?
I only know those with weld-in nuts and M6 bolts coming from the top...