Oil seals HELL

[SMBH]

Can any one help my 1964 CB77 ENG No 102472 has a oil leak from the right hand side now this has been going on for so long ALL oil seals have been changed lots of times I could write a book about it, I now think it is coming from the crankshaft oil seal.

What I want now is to replace yet again the right crankshaft 91201-259-00 one parts list says size is 32 x 65 x 7.5 another says 32 x 65 x 6.5 in now is a 32 x 65 x 6.5 not a genuine Honda but a modified std oil seal. I understand this oil seal is a special oil seal with a tab on it and the seal diverts oil down to the starter sprocket.

I wish to purchase a STD oil seal in the UK but unable to find the sizes stated above could I use a 32 x 65 x 8 ? or a 32 x 65 x 7. If so any one know were I can get one or two.

Please do not reply saying it maybe clutch pushrod or others as I have changed the clutch push rod and the oil seal at least 3 times, also have sent for oil seals from Canada twice and from the USA so no more from out side the UK. Thanks.

EDIT just seen this on EBay http://www.ebay.ie/itm/NOS-HONDA-C72-C7 ... 1035749926
would this do ?

[G-Man]

Mike

I got mine here....

http://simplybearings.co.uk/shop/Seals- ... index.html

The one in your link is for the final drive sprocket - different size.

G

[LOUD MOUSE]

No.
That is the seal for the output shaft with totally different dimensions.
As you are replacing seals have you.
Looked at the outside end of the clutch release for grooves?
Replaced the seal in the starter sprocket? Is it flush in the sprocket?
I do find the DREAM shows a 7.5 thickness and CB shows a 6.5.
Not sure what that's all about but I wouldn't go thicker than 7.5.
The seal seals the shaft and the oil to the starter sprocket comes through the center of the shaft and out a hole in the shaft.
Best of luck. ..................lm

Can any one help my 1964 CB77 ENG No 102472 has a oil leak from the right hand side now this has been going on for so long ALL oil seals have been changed lots of times I could write a book about it, I now think it is coming from the crankshaft oil seal.

What I want now is to replace yet again the right crankshaft 91201-259-00 one parts list says size is 32 x 65 x 7.5 another says 32 x 65 x 6.5 in now is a 32 x 65 x 6.5 not a genuine Honda but a modified std oil seal. I understand this oil seal is a special oil seal with a tab on it and the seal diverts oil down to the starter sprocket.

I wish to purchase a STD oil seal in the UK but unable to find the sizes stated above could I use a 32 x 65 x 8 ? or a 32 x 65 x 7. If so any one know were I can get one or two.

Please do not reply saying it maybe clutch pushrod or others as I have changed the clutch push rod and the oil seal at least 3 times, also have sent for oil seals from Canada twice and from the USA so no more from out side the UK. Thanks.

EDIT just seen this on EBay http://www.ebay.ie/itm/NOS-HONDA-C72-C7 ... 1035749926
would this do ?

[Hamamatsu Nippon]

The seal seals the shaft and the oil to the starter sprocket comes through the center of the shaft and out a hole in the shaft.
Best of luck. ..................lm


I just happen to be uploading camera pics onto my computer of the same seal in this discussion, so I will show one here. This is the oil hole in the crankshaft LOUD MOUSE is talking about. The two black rings on the shaft are residue from the seal on the starter sprocket. They cleaned up nicely prior to installing the starter sprocket with new seal.

[SMBH]

Thank you guys for your help, will crack on need to get back on the road lovely little bike to ride.

[LOUD MOUSE]

Thanks for sharing. ............lm

The seal seals the shaft and the oil to the starter sprocket comes through the center of the shaft and out a hole in the shaft.
Best of luck. ..................lm


I just happen to be uploading camera pics onto my computer of the same seal in this discussion, so I will show one here. This is the oil hole in the crankshaft LOUD MOUSE is talking about. The two black rings on the shaft are residue from the seal on the starter sprocket. They cleaned up nicely prior to installing the starter sprocket with new seal.

[SMBH]

I have on order the two oil seal on the righthand side of the crankshaft but the new larger seal size 32. 65. 6.5 will not have the Tab or the two cut outs will this matter or do I need to cut out them on the new oil seal ?

Here are the small cutouts on my old seal.