Re: 89 740 GL: Is the leak from the rear seal?
"z" <email@example.com> wrote in message
> Geronimo wrote:
> > It is using oil like crazy, but not burned. I watched underneath the
> > car with it running, and there is a drip, about one a minute,
> > coming off of the RH lower bell housing bolt. Definitely oil, not
> > trans fluid! I would think then that the oil is coming out the rear
> > seal, and down the inside of the bell housing. But before I tell the
> > mechanic I need a quote on replacing the real main seal, is there any
> > way for the oil leak to be somewhere else? An oil leak was previously
> > found and repaired at the distributor (bad shaft seal, they said).
> > How much does the tranny need to be disassembled or moved in order to
> > change the rear main seal? If it wasn't for the tranny being in the
> > way, I would do it myself.
> Gotta take the transmission and the clutch and the flywheel out. Or the
> equivalent in an automatic. Major pain in the a for what is finally a
> trivial bit of work. Might try some of the "seal swellers" they sell,
> or a switch to some of those oil for old engines they sell with seal
> swellers in them, although yours sounds like a fairly serious leak. I
> did the same for a much slower leak on a 240, with pretty good results.
> The parts guy actually had a book to look up which seals on which cars
> are rubber and will respond to the treatment, and which are rope type
> seals and won't.
It's not *that* hard to replace the rear main, last time I did it it took
most of a day, it's easier with a manual transmission, auto tranny is much