Honda-SOHC

Other Stuff => Misc / Open => Topic started by: SteveW on September 14, 2022, 03:11:41 PM

Title: Some people should not be allowed to touch anything mechanical
Post by: SteveW on September 14, 2022, 03:11:41 PM: Just took the sprocket cover and sprocket off the 650 to investigate a slight oil leak and found this:

I've cleaned it all up and waiting for the leak to appear, I'm hoping its the gear selector shaft seal.

>:(
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: Nurse Julie on September 14, 2022, 03:31:57 PM: 😭😭😭😭😭
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: McCabe-Thiele (Ted) on September 14, 2022, 03:34:09 PM: Presumably someone prised out the old seal chipping the edge instead of using the screw method?
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: SteveW on September 14, 2022, 03:50:20 PM: I think the seal on the 650â€™s has a shoulder on it so the only way to replace is to split the cases.
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: SteveW on September 14, 2022, 05:26:57 PM: Just bloody great, its leaking where the sprocket shaft goes through the seal :-\
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: McCabe-Thiele (Ted) on September 14, 2022, 05:35:19 PM: I wonder if all the marks are where a replacement seal has been forced in or is it previous chain damage?
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: Oddjob on September 14, 2022, 06:06:58 PM: There is supposed to be an oring behind the bearing and between the gear positioned there. It's there to stop oil weeping along the shaft, under the collar (which is what the seal seats on) and then coming out along the shaft again. It's either failed, perished or is missing.
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: SteveW on September 14, 2022, 07:10:54 PM: Canâ€™t see an o ring.
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: SteveW on September 14, 2022, 07:39:24 PM: Looking on the cmsl website the oil seal does not have a shoulder like the original.
So in theory, if I can get the old one out I wonâ€™t have to split the case.
Title: Re: Some people should not be allowed to touch anything mechanical
Post by: Oddjob on September 14, 2022, 10:01:19 PM: Sorry Steve, the 500/550 have the oring so I'd have expected the 650, which is essentially the same engine, would have one too.