I checked the vent tube, it's not kinked or clogged. And the transmission
is not overfilled, in fact the oil level is down about 10-12mm from the
bottom of the fill hole. Next step is to replace the seal. And refresh the
oil while I'm at it.

-Mark

On Tue, Jul 26, 2016 at 7:01 AM, Mark McCulley <markmcculley@gmail.com>
wrote:

> Thanks Dennis. I'll check the fluid level and vent tube. There's no reason
> I can think of that the transmissions would overheat, still have the stock
> 2.1L and don't pull a trailer. I did switch the type of oil I use a few
> years back, 3 years ago I switched from Redline to Delvac and then a year
> later I switched back to Redline when I installed a driveshaft decoupler.
> Both oils are synthetic 75W90. The transmission has just under 200K total
> miles, 80K since rebuild (I don't know if seal was replaced then or not).
>
> -Mark
>
> On Mon, Jul 25, 2016 at 7:08 PM, Dennis Haynes <d23haynes57@hotmail.com>
> wrote:
>
>> Yes this seal is easy to replace. However its leaking is usually a
>> symptom of something else going on. There is also an insert-bushing behind
>> it that may be cracked. Make sure the transmission is not overfilled and
>> that the vent tube is not kinked or otherwise clogged. This seal never sees
>> enough action that it should wear out. For it to go bad is a sign the
>> transmission has been over heating.
>>
>> Dennis
>>
>>
>> -----Original Message-----
>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
>> Of Mark McCulley
>> Sent: Monday, July 25, 2016 9:26 PM
>> To: vanagon@GERRY.VANAGON.COM
>> Subject: replacing transmission selector shaft seal
>>
>> My '87 has transmission oil leaking from where the selector shaft enters
>> the transmission case. Is it fairly straight forward to replace the seal
>> with the transmission installed? This is a syncro if it makes a difference.
>> I see van-cafe has a write-up here:
>>
>> http://www.van-cafe.com/home/van/page_131_783/transmission-selector-shaft-seal.html
>> ,
>> seems like it's not particularly difficult.
>>
>> Thanks,
>> Mark
>> Seattle, WA
>>
>
>