Oil leak, near filter 90 740T

[Dave A.]

My 1990 740T with 280K miles is leaking a oil at the oil cooler fittings
near the oil filter. My mechanic tried to tighten them but they would not
budge and still leak. If I got new and replaced why would that solve the
problem...maybe the leak is from another source? Anyone with similar
situation?

I tried to find the parts to online to purchase but can't find a source.
Mechanic says only dealer has these parts. I'll do the work but would like
to "see" the parts online to make sure I have the correct "description" of
the problem. If not I'll take a digital picture and make the long drive to
the city to the nearest BMW dealer.

Any advice, recommendations?

 

[Gunnar Eikman]

Dave A. wrote:
make the long drive to

the city to the nearest BMW dealer.

Since you posted this in a Volvo news group I advice against BMW
dealers. If you do have a BMW, please disregard from the following!


I assume you have a Volvo Turbo, and assuming the design is the same as
my 240 Turbo. The thing between the block and the oil filter may leak in
three places:
- Between itself and the block. There is a large o-ring in there.
- At either of the two banjo fittings for the oil cooler pipes.

In either case I think the oil seeps downwards and appears to come from
one of the banjo fittings.

Mine leaked, so I got the complete kit (four aluminum "washers" for the
banjos and in addition the rubber O-ring).

Clean the outside in order to prevent dirt into oil. Loosen the banjos.
Oil spill was less than I had expected. You then remove the oil filter,
then there is a big nut which makes the "oil filter base" come off. Take
it off, install new washers and O-ring, reinstall. On my 240 it's a
terribly awkward place to work. I did it mostly from above with the
turbo removed, I seem to remember. No leak since however! Since it is so
awkward, I recommend replacing all the seals.



--
Gunnar

240 Turbo Wagon '84 200 K Miles
940 Wagon '92 150 K Miles
on Swedish roads