Spencer,

I have the same issue. Getting ready to work on it. Here's what I know.

If you have the ETKA -look at image VA  1985 MG-1 SG-05 Illustration 6-05

The picture shows a crankshaft "O" ring - Part # N900-784-01  -  behind
the crankshaft pulley.

If you have FACTORY AIR CONDITIONING - there is a pulley specific to
that application - and it requires the "O"ring seal. You should be able
to remove the pulley without pulling the engine. It does require a
special tool (which you could make) to lock the pulley so the pulley nor
the crankshaft will move during removal,.(refer to the Bentley)

If you DO NOT HAVE factory AC, then a different pulley was used and it
requires a very different seal type.

Hope this helps.

John

On 2/28/2014 10:59 AM, Spencer Allen wrote:
> Hi all. I've got a heavy oil leak on my 85 westy that appears to be from the crankcase seal above the oil pump. This is the original seal do these things go bad after so many years? Will the RR involve pulling the engine or is there a neater way to do this? Looks like a lot of stuff has to come off to get to it. Any advice would be appreciated. Thanks.
> Spencer
> 85 Westy 1.9
>