Exhaust leak - PeachParts Mercedes-Benz Forum

MBDFahrer · #1 04-30-2004, 03:57 PM

I had my hood opened today and was testing for vacuum leaks and when I applied gas, a small stream of smoke shot out from the turbo area. The small "acordion" coupler (don't know what its called) seems to have a crack. Does anyone know the part number and/or what its called?

dieselmania · #2 05-01-2004, 01:00 AM

Jason,
It's called a flexible metal coupling and theres a tube inside of it called a manifold tube. The flex is #117 142 01 59 and the tube is #117 142 01 54. The clamps are # 603 995 05 65. Unfortunatley thats a two piece manifold and to replace those parts you will have to remove it. Theres another set just like it only bigger at the rear of the turbo. I just finished 2 days of removing my exhaust manifold and turbo to replace all those parts. I also replaced all the o rings on the turbo oil return and the mixing pipe, which also has to come off to get at the exhaust manifold. While I was at it, I also removed the intake and tanked it as it was clogged with sludge thanks to the EGR valve.
The hardest part for me was the partition wall, which has to come out, and some of the intake bolts are a bear. The bolts holding the turbo brackets onto the exhaust manifold are no picnic either. But it was worth it as now I know it's done right plus I saved enough for lots of new goodies.
Good Luck,
Brian

MBDFahrer · #3 05-01-2004, 03:34 AM

Thanks. Approximate how many hours did it take to complete? I'll probably plan this for next weekend if I can get all the parts.

dieselmania · #4 05-01-2004, 08:37 PM

I spent a good 14 hours but I did a lot of extra stuff, like removing and cleaning the intake, making an EGR blocking plate, replaced fuel returns and vaccuum lines, plus I like to clean and detail everything under the hood once I remove it. I also made several trips to the parts stores and don't forget burgers! I find if I take my time working on my Benz is relaxing and enjoyable, but if I am in a hurry then it becomes work.
The local shop said the exhaust manifold was a 4 to 6 hour job, depending which book they looked in, whatever that means. I had a bad feeling about that and decided I would be better off doing it myself. If you're just going for the manifold I am pretty sure you can leave the turbo in place, you'll just have to unbolt it where it hangs from the manifold.

aapolloni · #5 09-26-2004, 12:37 AM

I encountered the exact same crack on my 1987 300TD. The prior posts were a great help. I think it may be possible to replace this part only removing the air intake crossover, EGR and front portion of the exhaust manifold. This would have saved a great deal of time, however you would not be able to replace the manifold gasket. I was not able to try this as the head in the bottom 5 mm allen bolt holding the EGR assy in place stripped out requiring me to take every thing out to extract it. You need a very good long handle 5mm allen key (no ball end) to get this out, mine were very tight.

MBDFahrer · #6 09-26-2004, 04:58 AM

To this day, its still there

. Maybe i'll tackle it soon when i get all the parts from FastLane (along with some gaskets for the intake manifold). We've already gone far enough that we might as well do the job on a different 300D and to that point, has been pretty straight forward.

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