Wheel bearings

[Tim Allman]

Alas, when I popped out the wheel bearings on my CB77 they were a bit rough. Given that they are such a butt pain to relubricate I wonder if anyone has any advice on using sealed bearings.

[G-Man]

So long as you get the correct size you should be fine. My Moto Guzzi runs sealed baerings with no problem after 36 years......

G

Alas, when I popped out the wheel bearings on my CB77 they were a bit rough. Given that they are such a butt pain to relubricate I wonder if anyone has any advice on using sealed bearings.

[Tim Allman]

Thanks. Sealed it is.

[Tim Allman]

I pulled apart my CB rear wheel today but I have had no luck in getting the wheel bearings out. The problem is that the spacer between the bearings fits quite snugly so there is almost none of the inner races exposed and therefore I can't get enough purchase with a punch to pop out the bearing. Does anyone have any suggestions?

[G-Man]

Using a long drift, you have to knock the spacer to one side until you can get purhase on the inner race of the bearing.

Make sure that the end of your drift is nice and flat and then as you push the bearing out the spacer will move over more and more. Heatig the hub will help loosen the interference fit.

G

I pulled apart my CB rear wheel today but I have had no luck in getting the wheel bearings out. The problem is that the spacer between the bearings fits quite snugly so there is almost none of the inner races exposed and therefore I can't get enough purchase with a punch to pop out the bearing. Does anyone have any suggestions?

[DJM]

No need to bother trying to move the spacer,

Remove the bearing retainer plate from the sprocket / right hand side of the hub.

Turn the wheel over.

Drive the left hand / brake side bearing further INTO the hub, this will push the right hand side bearing OUT of the hub, the spacer will fall out too.

Turn the wheel back over and then simply drive the left hand bearing out the other way. CB72/77 front and rear hubs have the bearing housings machined deep enough to do this, basically machined to twice the depth of the bearing.

I know my CL77 is made this way too and I suspect this is pretty standard on Hondas of that era although I've never seen it mentioned in any of the shop manuals.

[G-Man]

DJM

Thanks for that! You learn something every day. I had always believed that they seat on the housing to stop the wheel moving around. Must take a closer look.

I've never had any touble getting bearings out.

I can just pop the hub in my press, now.

G

No need to bother trying to move the spacer,

Remove the bearing retainer plate from the sprocket / right hand side of the hub.

Turn the wheel over.

Drive the left hand / brake side bearing further INTO the hub, this will push the right hand side bearing OUT of the hub, the spacer will fall out too.

Turn the wheel back over and then simply drive the left hand bearing out the other way. CB72/77 front and rear hubs have the bearing housings machined deep enough to do this, basically machined to twice the depth of the bearing.

I know my CL77 is made this way too and I suspect this is pretty standard on Hondas of that era although I've never seen it mentioned in any of the shop manuals.