Has anybody done a replacement of AT oil cooler(radiator like) from an
E36 325i? Is it too much of a job requiring too much disassembly or
just a few bolts. I couldn't find anything about it on the Bentley
I was notified of the leak by my mechanic who is working on something
else. I don't see any oil drips on my usual parking spot but can see
that underneath my front bumper is wet with oil.
I'm planning to tackle it myself. Would it be hard to take it out? I am
hoping it's just on the joints requiring just gaskets and tightening
but in case it is the cooler. I would imagine ATF oil will gush out
when I disconnect the lines. Or maybe I need to drain all the ATF fluid
first and just refill it?
Are there any important things to keep in mind when tackling this?
In all automatics I have ever owned, the trans oil cooler is an integral
part of the radiator. If it needs service, the entire radiator must be
replaced. My BMW has a manual trans, so I am not sure how they handle this
issue, but since all other makers send the trans fluid through the radiator
itself (unless somebody has installed an external cooler), I can't think of
a reason why BMW wouldn't do it the same way.
ATF will not "gush" out, it will drip. The lines are small, about 10mm on
the OD, and there is no pressure when the car is off. You can easily
disconnect a line and plug it with a suitable bolt or screw -- a golf tee
works excellent, by the way. I suspect the hose clamps are loose, or the
rubber hose is cracked, that sort of thing. The cooler itself is usually
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