Pushrod Seal
These pics were taken with a bare mainshaft, so it won't look exactly like it would on an assembled transaxle.
Here is a pic of the end of the mainshaft, where the clutch disk fits on, found in the bellhousing after the trans is removed from the engine.
The pushrod is removed, and you can see the seal in the end, then the bushing (it looks like a gear) under the seal...
To get the seal out, just use a screwdriver to pry it from the shaft...
Now the bushing is the only thing left in there....
There are 2 ways to get it out.
You can knock it out, or you can pull it out.
To knock it out, you obviously have to come in from behind and hit it. This requires the use of a 10mm or 3/8" rod to fit down the mainshaft from the TO bearing end.
The TO bearing end on your trans will look something like this, and will be right under the TO bearing...
I found a long piece of threaded rod that was M10x1.50 that worked for knocking the bushing out...
The entire rod doesn't need to be 10mm, just the end shoving against the bushing. If you can find a 10mm bolt, you can cut the head off, drop the 10mm threaded rod you made down into the end of the mainshaft, and push that through, using whatever is long and skinny enough to reach and fit, and knocking the 10mm chunk through will knock the pushrod bushing out as well.
The other method is to pull the bushing. You can use a M10x1.50 tap, and cut threads into the bushing, and then thread in a bolt. This allows you to grab the bolt with a slide hammer and yank the bushing out, or, you can grab the bolt with vice-grips and use a hammer to tap the bushing out, and finally, with a bolt threaded into the bushing, you can now use whatever is skinny and long enough, and knock the bolt/bushing out from behind like in the other method.
These pics show the tap and bolt and bushing, and the bolt threaded into the bushing...
When installing the new bushing, drive it in until it comes to a solid stop, it'll sit on a step inside the mainshaft ...
The seal is inserted just under flush with the end of the shaft. VW specs call for it to sit 0.8mm-1.3mm under the edge of the shaft.
Be sure to lube the new seal with trans fluid before installing it to allow it to slide in easily.