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Author Topic: Front wheel bearing retainer  (Read 2390 times)

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Offline MikeDeB

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Front wheel bearing retainer
« on: June 07, 2005, 02:15:24 PM »
Is it me or is the threaded front wheel bearing retainer a bear to get out and reinstall?  I've done two bikes and both were a PITA.  The retainer ends up getting rather knackered removing it.  On this last one I dressed the threads on the retianer along with the notches and it was still difficult to install it.  Does anybody have any useful tips for reinstalling these retainers?  And, is the rear bearing retainer as much a PITA as the front?  Thanks in advance.
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Mike (Old SOHC/4 #2641)
Holt, MI
71 CB750K1
72 CB750K2
72 CB100K2
97 Ducati 900 SS/SP w/FCRs
98 Ducati 750 Monster w/FCRs
80 SR500

"Growing older is inevitable, growing up is an option."

Offline MikeDeB

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Re: Front wheel bearing retainer
« Reply #1 on: June 08, 2005, 04:56:57 AM »
The bearing retainer is not a press fit.  The hub is a standard CB750K hub (69-78).  It's also the same hub as used on the CB500/550.  The seal that fits into the bearing retainer is rather easy to deal with; it's the removal and replacement of the retainer that is a PITA.  All I want to know is if anybody out there has found a way to remove these without knackering the notches on the face of the bearing retainer.  The part I'm referring to is #10 in the attached pic.  Thanks.

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Mike (Old SOHC/4 #2641)
Holt, MI
71 CB750K1
72 CB750K2
72 CB100K2
97 Ducati 900 SS/SP w/FCRs
98 Ducati 750 Monster w/FCRs
80 SR500

"Growing older is inevitable, growing up is an option."

RSV12K

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Re: Front wheel bearing retainer
« Reply #2 on: June 08, 2005, 06:51:20 AM »
Well, I haven't and because I was beating the crap out of the ring and getting nowhere, I decided to put off replacing the bearing and move onto to some other things. I tried fashioning a tool and that didn't work any better.
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Offline Paul

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Re: Front wheel bearing retainer
« Reply #3 on: June 08, 2005, 07:38:52 AM »
Problem is..you are dealing with two alluminium (Alluminum) pieces and by the time they need to be seperated..they have suffered oxidisation. Short of spraying easing oil in there and going away for seven weeks, and if you are dealing with one or two notches at a time the ally just doesn't have the meat in it to stay together. (I made a circular tool with 4 shoulders milled to grab each notch snug and fit a socket wrench. Shocking it doesn't seem to work as due to the "thinness" of the ring it tends to warp and lock up even more.
Admittidly ...adly..? I cut mine out with a die grinder
To fit the new one I had to taper the start even more as the first thread or two seem to be crushed,
put anti sieze on and along with the new tool comes and goes easy now.
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Paul.
It hurts to admit when you've made mistakes, But when the're big enough, the pain only lasts a second

Offline MikeDeB

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Re: Front wheel bearing retainer
« Reply #4 on: June 08, 2005, 01:26:41 PM »
Quote from: Paul on June 08, 2005, 07:38:52 AM
Problem is..you are dealing with two alluminium (Alluminum) pieces and by the time they need to be seperated..they have suffered oxidisation. Short of spraying easing oil in there and going away for seven weeks, and if you are dealing with one or two notches at a time the ally just doesn't have the meat in it to stay together. (I made a circular tool with 4 shoulders milled to grab each notch snug and fit a socket wrench. Shocking it doesn't seem to work as due to the "thinness" of the ring it tends to warp and lock up even more.
Admittidly ...adly..? I cut mine out with a die grinder
To fit the new one I had to taper the start even more as the first thread or two seem to be crushed,
put anti sieze on and along with the new tool comes and goes easy now.

Thanks Paul.  I kinda figured that was the way I was going to have to go.  I was able to get mine out and put back in but not without problems.  However, mine didn't warp.  I also didn't have too much oxidization going on.  What I did find was that Honda peened four spots on the retainer on the outer edges that deformed the threads.  I believe this was to insure that the retainer didn't back out.  When I was installing the retainer yesterday I got about halfway when it dawned on me that the outer threads of the hub may also be deformed from this peening process.  Well, next time it's out (when I do a full wheel rebuild) I'll dress the threads and use a new retainer.  In the meantime I'm going to work on fabricating a tool to remove these retainers.  Thanks again.
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Mike (Old SOHC/4 #2641)
Holt, MI
71 CB750K1
72 CB750K2
72 CB100K2
97 Ducati 900 SS/SP w/FCRs
98 Ducati 750 Monster w/FCRs
80 SR500

"Growing older is inevitable, growing up is an option."

Offline Clyde

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Re: Front wheel bearing retainer
« Reply #5 on: June 08, 2005, 06:36:04 PM »
I drill about 1/8 " down with a 3/32 drill, to remove the peened spots first. You definitely need a special tool as impact will destroy the retainer very quickly.
Make sure you use a anti-seize compound when you put it back in (as mentioned above)
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SOHC4 #1909
Honda CB750 K0(original and unrestored), K1(in pieces), K2(restored), F1(restored), 76 750a (awaiting restoration), 1966 Honda CB72
Suzuki GT750 1972 (restored), Kawasaki Z1 1973 (restored)

Matt at PSB

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Tool making time
« Reply #6 on: June 08, 2005, 07:36:29 PM »
I made a tool from a second hand store 1/2" drive impact grade socket. Cut four notches down the side of the socket & welded in four pieces of tool steel dowels so as to properly engage all four round holes in the Seal Retainer Ring. I paid no attention to the peen marks, but I did soak the ring thread area overnight in high-grade penetrating oil.

Mounted the rim in the tire machine the next morning, put the 1/2" drive ratchet on the new "Special Service Tool" and a 32" bent fork stanchion tube that is my favorite "Cheater Bar". Torqued that Seal Retainer Ring right out with no problems. Fixed what I was after inside the hub & screwed the Seal Retainer Ring right back in again without difficulties. No need to re-peen it; it is not going anywhere.

Matt at PSB
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Offline MikeDeB

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Re: Front wheel bearing retainer
« Reply #7 on: June 09, 2005, 01:29:55 AM »
Thanks everybody for the responses.  It looks like tool fabrication is in order so as not to ruin the new ones I have on hand for when I do a full wheel rebuild.  Also, I did use anti-seize when I reinstalled the old retainer.  Thanks again.
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Mike (Old SOHC/4 #2641)
Holt, MI
71 CB750K1
72 CB750K2
72 CB100K2
97 Ducati 900 SS/SP w/FCRs
98 Ducati 750 Monster w/FCRs
80 SR500

"Growing older is inevitable, growing up is an option."

Offline cben750f0

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Re: Front wheel bearing retainer
« Reply #8 on: June 09, 2005, 05:26:23 AM »
MIKE.. also get yourself a thread file, the damage to the threaded area on the hub will work better if you try to repair the thread, had a similar prob, got mine out, and thread filed both the retainer and the inside of the hub , B4 i put it back together, they went back together waaaay easier after a clean up.... hope this helped..peace
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