Rebuilt A 833 front oil leak

Dan Brewer said
This is my process. I have been putting about a 1/8" chamfer in the bore. Once the shaft is close, I clean & dry the bore with brake kleen. Then wipe the bore with silicone. Sometimes there will be a scrape, or some rust pitting in the bore, and this helps fill those small voids.

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Thanks Dan and 66fs. I'm a bit confused. Does the transmission need to come apart to do this, or can it be done from the outside only? Does the countershaft have to replaced? In the above photos, how does the shaft move from the depressed position to flush with the case?