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marxjunk

the counter shaft pin leaks from too much play or improper install, and the only way to fix is to pull it..theres no seals..its friction fit..and is not a novice type repair..

you can push it back in and stake it, and run some silcone on it and it will help for a bit and is just a band-aid and not a good one, but theres an issue if it leaks from the front..if its moving enough to get grease oput the front, id have it checked

jensenracing77

X2 on the counter shaft. You can pull the transmission back from the bell housing and add some RTV to the end of the shaft and it will seal against the bell housing. The input shaft has no seal and should not leak.

geardoc66

If the transmission is a '72, it will have the 1" countershaft. It is very rare for these to come loose or leak like the pre '66 smaller shaft unless it has been apart a lot or has poor fitting replacement parts. The front bearing retainer has a gasket and the bolts for it have open holes to the fluid that require sealer. Those areas are more common for leaks in the front of the unit.

seansolds

Behind the front shaft bearing is an oil slinger, they can destroy over years of movement like mine did and pushed gear oil forward which soaks the front shaft gasket and eventually cause a leak. It's very unlikely the cluster shaft would leak unless it was replaced with an inferior quality shaft. It will be easy to see exactly where the leak is coming from when the trans is pulled. If it's high by the shaft probably a slinger, if it's low it would be the cluster shaft.
Sean.

jozw30

My 72 leaked at the counter shaft.

Hard to find local shop that can bush it back to round.

I was not going to ship my numbers case to Detroit......

Go get a Super Case and don't look back. That thing is a tank! So much better than the OE casting. Put the original in a box for the next guy to fuss with.

Costs the same basically as repairing the GM piece.

If the tapered counter shaft hole is worn out of round, RTV is not a long term fix.

Gary M

Look at the crankshaft pilot bushing that the trans front shaft rides in and check if it is ok.

Is your crank a factory four speed crank?

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svnt442

Not Oldsmobile, just GM. The problem is finding someone that is proficient with the older transmissions.

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