SOHC.co.uk Forums > CB500/550
Shift shaft tiny lateral movement?
Oddjob:
Not sure what that white stuff is on the push rod Jezza? PTFE?
Whatever it needs to come off, where it is means it will get pulled into the push rod seal and it will destroy the lip edges or at the very least force them apart so oil leaks through.
Alex, so long as that seal isn't penetrated it will be fine, it doesn't look bad TBH, good job you found it early though.
There are O-Ring chains that fit, I've run one for ages and had no problems, although the standard size is normally a 50 chain there are chains stamped as 50 but they are thinner. DID seemed to have a habit of supplying Honda with chains that aren't the same size as what they sell to the public, my DID OE 1300 chain for instance isn't the same as a normal DID chain for the 1300. You need different rivet links as the OE uses thinner pins which aren't as long.
Just fit a standard non o-ring chain with a split link and you'll be fine. If I can find the size of the O-Ring chain that does work I'll post it so you can investigate next time you need a chain. I took mine off a CBX550 I was breaking out of a crate, it worked fine and it's still lying on the garage floor so next time I go round to the garage I'll measure the links/pins etc and do a comparison.
I'll take a pic of my spare 500 cases but I'm fairly sure that seal opening is the same on the 550 cases.
Fair amount of casing damage on Matthews pic Alex, clearly had a drive chain breakage at some point.
JezzaPeach:
Thanks Oddjob it’s Lithium grease. Not been on long, I’ll remove it when/if I need to do the seal, or just remove it shortly.
Oddjob:
Grease is ok, looks like plastic to me.
Just checked the 500 cases, it has the same oil hole, same diameter. However after refitting an old seal it appears it's not possible to drive the seal in enough to block the hole, the hole is lipped as you can see and the lip stops the seal before it goes to far in. It's possible to sink the seal a little if you drive it right down to the lip, so that would explain yours Jezza, however it won't block the hole.
JezzaPeach:
Many thanks Oddjob. I notice the castings vary quite a bit between models too so comparison not easy, like the thickness of the surround which varies as it goes round in Alex’s pic, also the shape of the ‘bracing piece’ going off it etc.
I recall the seal went in pretty easily, so minimal force used, not enough to go over the lip, and happy it’s in a bit given it wasn’t overly tight. It’s stayed put as I’ve had the cover off a couple of times, including the pic doing the pump seals.
Trigger:
--- Quote from: Oddjob on August 02, 2022, 06:18:26 PM ---Grease is ok, looks like plastic to me.
Just checked the 500 cases, it has the same oil hole, same diameter. However after refitting an old seal it appears it's not possible to drive the seal in enough to block the hole, the hole is lipped as you can see and the lip stops the seal before it goes to far in. It's possible to sink the seal a little if you drive it right down to the lip, so that would explain yours Jezza, however it won't block the hole.
--- End quote ---
It is possible to block the hole Ken, i have had engines here were the owner has put a socket on the seal and wacked in with a hammer. As suggested on a You tube vid on how to drive a seal in ;)
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