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Author Topic: Aftermarket for CB750K inner wheel bearing retainer?  (Read 494 times)

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Offline V65cigarfly

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Aftermarket for CB750K inner wheel bearing retainer?
« on: June 24, 2023, 09:47:31 PM »
Out of all the CB750K models that were produced, I really can't understand why aftermarket retainers are not available for the CB750K's.
Yes, I'll admit Honda OEM's are available from vendors in Europe (including an astronomical shipping fee), but I just can't justify the cash for those (being retired/on fixed income, and all...).  I'm looking for an aftermarket for the inner rear wheel bearing retainer (partno 41231-300-020).  These are so hard to get out and easily damaged.  Is there anyone out there who may know of a good alternative?
 
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Offline newday777

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #1 on: June 25, 2023, 02:22:09 AM »
Welcome aboard

Well I just checked the part number and it's available from https://www.hondarestoration.com/photodetail.asp?hrPart=41231-300-020 they have at least 2 on the inventory.
It's also available from South Sound Honda in Washington. https://www.southsoundhonda.com/--xpartsstream#/s/HOM//41231-300-020//1/y


Did you drill out the stakes punch mark in the ad thread edge before trying to remove the retainer? Not drilling the stake punches is how the retainers get damaged along with not using a tool to properly remove it.
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline newday777

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #2 on: June 25, 2023, 02:33:07 AM »

Many have inadvertently buggered up the retainers not knowing about the need to drill out the stake punch marks before turning the threaded retainers(some are left handed threads!)
https://www.dotheton.com/index.php?threads/cb750-front-rear-wheel-bearing-removal-tool-easy-and-cheap.34161/
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline newday777

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #3 on: June 25, 2023, 02:37:48 AM »
How to drill out the stake punch marks and using the tool to remove the retainers

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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Slow2

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #4 on: June 25, 2023, 05:11:51 AM »
And the tool is super easy to make. Just get a piece of flat stock from the hardware store, two 5mm bolts and nuts, and drill two holes the correct spacing and fasten the bolts with the nuts. Insert the tool after drilling the stakes. Hold the bar flat and tap lightly with a hammer.  Works perfect!! Makes for easy installation also.

Ed Bruton
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Offline bryanj

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #5 on: July 02, 2023, 11:20:36 AM »
Honda classics in uk do one and i would be happy to forward at cost if that helps
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Offline pekingduck

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #6 on: July 02, 2023, 05:45:54 PM »
Here's a question.  Why is the inner bearing retainer ring on the drive side of the hub even necessary at all?  The bearing is an interference or press fit, and bottoms against an inside lip.
The brake side bearing hole has no lip, so the inside bearing spacer has to be put in and the bearing carefully installed to the proper depth. 

So what does that bearing retainer do?  Typical Honda over-cautious design?  They continued this hub design on the CB500-550-650 fours and DOHC 750s and 900s, but never used a bearing retainer again. And Kawasaki and Suzuki never used them on their superbikes. Pressed in wheel bearings do not move laterally.

The outer bearing retainer, in the sprocket carrier, contains a seal, so is useful, but everyone later used a seal the O.D. of the bearing.
« Last Edit: July 02, 2023, 06:04:06 PM by pekingduck »
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Offline Don R

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #7 on: July 02, 2023, 06:29:41 PM »
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Offline pekingduck

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Re: Aftermarket for CB750K inner wheel bearing retainer?
« Reply #8 on: July 02, 2023, 07:13:06 PM »
That's a good source, but the inner one on the rear, 41231-300-020 is not among the ones listed.
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