Pushrod seal question

[puccini]

RATS!!!!!!!!!!!!!

My pushrod seals are leaking.

I haven't done that job in years

Is there any new miracle way of doing it.

Or do you have to remove everything and waste hours putting it back together?

Gerry

[PGlaves]

RATS!!!!!!!!!!!!!

My pushrod seals are leaking.

I haven't done that job in years

Is there any new miracle way of doing it.

Or do you have to remove everything and waste hours putting it back together?

Gerry
No miracle cure.

It is possible to leave the head on the cylinder by not removing the nuts from the 2 short studs. It is possible to leave the piston/rings in the cylinder by sliding the cylinder just far enough out to remove the piston pin. These two things avoid disturbing the head gasket and the rings. But the exhaust and carbs still have to come off. Sorry.

Clean everything well where the cylinder will mate back with the block.

Oil the inside of the seals before installing them on the tube. Oil the face that mates with the block too.

[jmerlino]

And for heaven's sake, if you take out the wrist pins, when you put 'em back in, make sure the circlips go on the right way. DAMHIK.

[dlearl476]

Is there any new miracle way of doing it.
Gerry

Every time I brought it up, my mechanic friend said "Buy a qt. of oil, fer Crissakes. We'll do it when it NEEDS it, when we do the valve and rings at about 120,000"

My R had 60K! Alas, it's gone to a good new home now. In NZ.

[Bill Burke]

Some light reading for you:

http://pweb.jps.net/~snowbum/pushrodseals.htm

On my /6, I had the metal spacer tween cylinder and block. Cleaned it up good with acetone and used Yamabond grey sealant. No leaks at block or seals to date (just did the job not long before putting the bike up for the winter so the jury is still out).

[puccini]

Thanks for all the help.

I guess I got to bite the bullet and do it.

Gerry

[RandyB]

Don't forget new orings for the cylinder and studs. Follow Snowbum's advice on oiling them last and well, as well as sealant use on the cylinder base. You can fix the pushrod seals and wind up with a leak at the cylinder base. Trust me.:cry

Airheads site has some good stuff there too. It's for a GS but still applicable.

[GSTom]

I was using synthetic oil in my airhead and had leaking pushrod seals. The leakage would leave spots of oil under the bike. I was nearing the point of replacing the seals.
At around the same time I happened to switched oil brands to Castrol GTX and the leakage has slowed to a very small amount, visible on the engine, but no more drippage. YMMV

[osbornk]

I was using synthetic oil in my airhead and had leaking pushrod seals. The leakage would leave spots of oil under the bike. I was nearing the point of replacing the seals.
At around the same time I happened to switched oil brands to Castrol GTX and the leakage has slowed to a very small amount, visible on the engine, but no more drippage. YMMV

The same thing happened to me with both my airhead and my K100. They both seeped oil with full synthetic oil. The airhead seeped around the pushrod seals and the K bike leaked at the rear main. I switched both of them to a Castrol synthetic blend and they both quit leaking. I sold the K bike but the airhead has not leaked in the last 7 or 8 years.