1959 panhead leaking transmission oil

[ldfly112]

Im sure this topic has been talked about a lot . My 59 has been leaking trans oil for a couple months not a lot in the begining but continued to get worse I know a small amount oil under the bike is fairly normal but it is a bit more. Im going to pull the primary and replace the seal . My question is what seal is best method or what options do I have Thanks and Happy New year

[dukekleman]

Idfly,

If this a high mileage scenario, there will be many items to address for a transmission oil leak, not just the main seal. If it is a low mileage rebuild, odds are the torque value of the sprocket nut has lessened.

Hope this helps,
Duke Kleman

[T. Cotten]

I'd drain it and fill it with diesel first, Idfly,

And see where the leak actually is, before throwing seals at it.

Leaky studs can drive you nuts like me.

....Cotten