SOHC.co.uk Forums > CB500/550

Shift shaft tiny lateral movement?

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alexdecker:

--- Quote from: Trigger on July 31, 2022, 07:17:12 PM ---Is the gear change seal flush with the case ? If you push it too far back, there is a oil channel that can be blocked by the seal and if this happens the oil is not feeding the internal parts. Engine will not last long and the seal will leak  ;)

--- End quote ---

I think I put it in the right amount. There was a slight size in diameter from where the seal should sit to the oil passage, indicating how far in it should go. Shot a few pics of it today. Doesn’t it look okay?

The seal is completely dry though, but starting the engine up, the oil pump cover seal started dripping almost immediately, so pretty positive that’s where the leak is. Ordered a new complete set from Julie, so hopefully I will kill this soon, and no other leak will surface when I rev this thing up and put it through some pressure!

Oddjob:
Looks like an O-Ring chain, make sure there is clearance for it.

Seal looks ok, looks dry as well.

alexdecker:

--- Quote from: Oddjob on August 01, 2022, 06:54:48 PM ---Looks like an O-Ring chain, make sure there is clearance for it.

Seal looks ok, looks dry as well.

--- End quote ---

Mmh. I don’t know if it is. I have not had any problems with it. Where should it need clearance? I can’t hear any rattling noise again any metal when I run it.

EDIT: Just googled the matter. How in the world can you spot the difference? Mine does not have a master link if that means anything. Only one of the links have some dimples in the end of the small pins holding the links together.

Oddjob:
The O-Ring is a thicker chain than standard so check where the rivet pins go as it goes around the front sprocket, there are some reports of them gouging a track in the crankcase, hitting the chain guard that you're after and on the 500 breaking the clutch push rod. See if you can spot any shiny areas where it might be touching.

JezzaPeach:
Hi, I was comparing this (550) to my 500 and I think I can just see on Alex’s pic where the deeper part of the casing ‘swells out’ maybe about 15mm deeper in.
On mine I have no pic further in, but the seal is recessed only about 2mm in, which is where it was gently pushed to, and stopped.
It can just be seen in the attached pic, does that look normal for the 500/4?

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