Author Topic: CB500 rear bearing retainer  (Read 2053 times)

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Offline hudstr

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CB500 rear bearing retainer
« on: February 28, 2018, 06:01:37 PM »
Ok, the time has come where I need to find a fix for my problem, no more putting it off. I have 2 retainers, a new one from 4into1 or david silver spares, don't remember where I bought it, and my old one. The problem I have is the new one will go in maybe 1 or 2 threads, then resist and won't go anymore. The old retainer goes in just fine, until I hit the mangled threads at the end (see picture). I as well as someone else have measured them and have found the new retainer is bigger from thread to thread. I believe I found it at least 10 thousandths bigger and the other person found it 12 thousandths bigger.

Reading some other forum posts, people just say clean up the threads with a tap, but I don't know if it will be possible being so close to the lip of the retainer. I'd much rather use blue or red loctite than use a punch to hold the retainer in, would blue loctite suffice or should I go with red?

Any ideas are welcome.


New retainer

Old retainer

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Offline hudstr

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Re: CB500 rear bearing retainer
« Reply #1 on: February 28, 2018, 08:33:04 PM »
A small chisel actually straightened out the threads better than expected. The tap I have tapers at the end so it is too long to get the affected threads. I'll have to buy one which will fit. I would take a picture of the threads but my phones' camera lense has been scratched for a while now so it doesn't focus properly. I just ordered a new one of those so maybe my pictures won't be blurry anymore.
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Offline dave500

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Re: CB500 rear bearing retainer
« Reply #2 on: February 28, 2018, 11:00:23 PM »
it shouldn't be a tapered thread?youll be hard pressed finding a tap that size let alone a left hand thread,use a thread file.
« Last Edit: February 28, 2018, 11:26:52 PM by dave500 »

Offline my name is nobody

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Re: CB500 rear bearing retainer
« Reply #3 on: March 01, 2018, 05:15:09 AM »
Mine did the same thing. Take this as a suggestion that worked, but use good judgement. The threads in my hub were all good visibly, and the retainer went on easily about 3/4 of the way smoothly. I threaded the retainer up to the sticking point, then worked it back and forth progressively till it was all the way on.
I used penetrating oil, and went little bits at a time, not using too much force to persuade things, and regularly backed the retainer out completely and started again. The retainer cleaned itself and the hub. It took a while, but all turned out well, as I can thread it in by hand.
It threads on smooth and seems to bottom out when tightened, so I called it good. Hasn't caused any problems so far. I dunno, Maybe I just got away lucky, results may vary.

Offline BobbyR

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Re: CB500 rear bearing retainer
« Reply #4 on: March 01, 2018, 06:16:43 AM »
Ok, the time has come where I need to find a fix for my problem, no more putting it off. I have 2 retainers, a new one from 4into1 or david silver spares, don't remember where I bought it, and my old one. The problem I have is the new one will go in maybe 1 or 2 threads, then resist and won't go anymore. The old retainer goes in just fine, until I hit the mangled threads at the end (see picture). I as well as someone else have measured them and have found the new retainer is bigger from thread to thread. I believe I found it at least 10 thousandths bigger and the other person found it 12 thousandths bigger.

Reading some other forum posts, people just say clean up the threads with a tap, but I don't know if it will be possible being so close to the lip of the retainer. I'd much rather use blue or red loctite than use a punch to hold the retainer in, would blue loctite suffice or should I go with red?

/quote]



Any tap with the same thread pitch should work. If the search were working there was a fine post on this. It is sort of a carving motion easing the bent over material back into shape. The other procedure of working the retainer in and out would bring everything back into proper shape. While anti seize is a great lube, it is messy and does not allow you to see what you are doing very well, oil would be easier to work with. Since the retainer is really well captured blue loctite would be all you need.
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Offline dave500

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Re: CB500 rear bearing retainer
« Reply #5 on: March 01, 2018, 01:03:36 PM »
that rear thread is steel on steel.

Offline Bill/BentON Racing

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Re: CB500 rear bearing retainer
« Reply #6 on: March 02, 2018, 05:47:09 PM »
Oil is not a great "thread lubricant". AntiSieze would be much better since its aluminum-aluminum and will prevent the threads from galling.
+1

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Offline Bill/BentON Racing

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Re: CB500 rear bearing retainer
« Reply #7 on: March 02, 2018, 05:48:10 PM »
Oil is not a great "thread lubricant". AntiSieze would be much better since its aluminum-aluminum and will prevent the threads from galling.
+1

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Hub aluminum along with retainer

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BentON Racing Website
OEM Parts | Service | Custom Builds
BentON Racing Facebook
Over 35 years of experience working on vintage motorcycles, with a speciality in Honda SOHC/4 with a focus on the CB750 and other models as well from 1966 - 1985.
______________________________________
1993 HRC RS125 | 1984 NS400R | 1974 Honda CB750/836cc (Calendar Girl) | 1972 CB 500/550 Yoshi Kitted 590cc | 1965 Honda CB450 Black Bomber | 1972 Suzuki T350 | 1973 88cc | Z50/Falcons Pit Bike | 1967 CA100| 1974 CB350 (400F motor)...and more.
______________________________________
See our latest build 'Captain Marvel' CLICK HERE

Offline dave500

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Re: CB500 rear bearing retainer
« Reply #8 on: March 03, 2018, 12:49:54 AM »
the rears are #$%*ing steel!the fronts are alloy,the male rear retaining screw is steel full stop!
« Last Edit: March 03, 2018, 04:36:32 AM by dave500 »

Offline dave500

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Re: CB500 rear bearing retainer
« Reply #9 on: March 03, 2018, 04:26:17 AM »
they are all steel on rears.

Offline dave500

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Re: CB500 rear bearing retainer
« Reply #10 on: March 03, 2018, 04:35:13 AM »
I do apologise cal,the hub is alloy however the retainer ring is steel,please accept my most humble apologies and hope others haven't been misled on this issue.

Offline Ian Bunyan

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Re: CB500 rear bearing retainer
« Reply #11 on: September 20, 2022, 12:10:35 PM »
Just wanted to say, I took the advice in your post and it has worked perfectly, I had the same issue.

Thank you for posting,

Ian B.

Offline bryanj

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Re: CB500 rear bearing retainer
« Reply #12 on: September 20, 2022, 01:23:41 PM »
Buy a thread file
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