oil on the good foot

[DEEBS11]

OK, I did the repair with the info Phil & Speedlimit85 have provided. The old seal has a lip on it that holds it in the case so its real fun to get out. Just be careful not to hurt the case or the crankshaft end.

[DEEBS11]

Thanks, definitely leaking from crank seal but I will also replace plug O-ring. I ended up with this Viton seal. Will install soon.

https://www.ebay.com/itm/134266201693

[speedlimit85]

Yes. I am leak free. The only leak I have still is from the left head gasket.

First try changing the o-ring under the cover behind the bolt. That oil can get in the cover.

If not fixed then it is the seal which is hard to remove. It was installed with the cases split and has an edge inside. I punctured it, then pried it, got it out.

The new seal is a different size with no edge -partzilla is wrong that seal is for the other side=

32X48X8 correct size https://www.oringsandmore.com/metric...-ref-cr563065/

Biker Phil was my guide.

[DEEBS11]

Yes. It's been 6,000 mi. without leaking. 3000 mi ago it was the o-ring.

I removed the cover to tighten the chain ( yea still got the stock tensioner) looked and felt dry. No oil residue- nothing slick at all.

I hope it lasts. I couldn't have done it without you. Thanks.

Hi Speedlimit85, are you still leak free here in September? How many miles? Looks like I am looking at a left seal job as well. Got a bit of oil on my left shoe today. Took off the cover and it had about a shot glass of oil inside. Joy.

[bikerphil]

No problem brother, it was my pleasure.
This has been a good thread.

[speedlimit85]

Yes. It's been 6,000 mi. without leaking. 3000 mi ago it was the o-ring.

I removed the cover to tighten the chain ( yea still got the stock tensioner) looked and felt dry. No oil residue- nothing slick at all.

I hope it lasts. I couldn't have done it without you. Thanks.

[bikerphil]

Good to know that it will hold up without it.

[speedlimit85]

No. Now it may be possible to remove the sleeve. With locktite it is stuck forever.

[bikerphil]

Eric, did you end up using Lock Tite on the sleeve or not?

[bikerphil]

Am I close to a real bike mechanic yet?

Update: seal and sleeve are working.

after 3000mi no oil leak

Yes you are, congrats. That's awesome.

[speedlimit85]

Update: seal and sleeve are working.

after 3000mi no oil leak

[bikerphil]

I may have amazing news, replaced leaking o-ring under left cover

I hope that's all it is, good luck.

[jetmechmarty]

If you end up having to revisit the seal, try this stuff. I fixed three hydraulic actuators with it. It works and my save you the hassle of repair.

[speedlimit85]

I may have amazing news, replaced leaking o-ring under left cover. It looked like I crushed it when replacing last time. It can fool ya...I have not looked at the seal, it may be working. I'm gonna put more miles on and see it I get any more oil on the good foot.

[bikerphil]

Yep, I would try the 20W50 conventional non-synthetic next time around. Yes it is a bit thicker and with 58K on the clock, that's what I would be using. The crankshaft bearing clearances on these old air cooled engines is a bit on the large side, so the thicker oil should help.

The 20W50 is getting more difficult to find these days, your Walmart should carry it for $18...

The Supertech brand in the blue jug has been changed to a semi synthetic, so this seems to be a suitable replacement.