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W126 OM617 1985 300SD turbo drain tube gasket & seals
A very good DIY is here
turbo oil drain question My contribution is the following pictures. This job is not to bad.
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ Last edited by whunter; 07-30-2008 at 03:27 PM. |
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W126 OM617 1985 300SD turbo drain tube gasket & seals
More pictures 1.
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W126 OM617 1985 300SD turbo drain tube gasket & seals
More pictures 2.
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thanks for the pics....that should help me out a great deal...im not dreading this so much anymore
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1985 300SD 192,000miles...Astral silver/ Grey MbTex 1983 300D 194,000miles...White/Tan MbTex...my newest addiction |
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Two things to think about with this job....
Hi. Did this job on my 83 300SD....not too bad. I was quite befuddled after doing the job since I still had a leak and thought I must have skipped over something. Much to my surprise the lower portion of the oil return tube that I ordered came with a leak free of charge! ...So..if you are by chance replacing the lower tube check it by applying air pressure while under water for example. I had to remove the first "new" tube and buy a second one.
The other issue if not already mentioned is that you would want to drop the lower oil pan since you may have to dig out the grommet that sits on top of the lower oil pan. Bits of it will drop into the oil pan guaranteed if you have to use a pick to get it out. Good luck!!
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83 300sd, 280K Blue/Blue Leather (~24mpg) 95 E300D, 150K Champaigne/Parchment(~33mpg) |
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I replaced these on my 81 SD about a month ago and they leak just as bad as they did before. Any ideas?
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Quote:
When I rebuilt my engine last year, it was much easier. All the parts were clean and easy to reach on that engine stand. I didn't even spill my beer I cleaned everything with rubbing alcohol first, and added a thin film of black RTV around the grommet. It's so leak free now I'm worried about rust.
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. |
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I did take off the pan to replace the gasket on that. Yes my engine does have quite a bit of blowby. At least more than i would think an engine should have. However, I've been told that this is normal on these engines.
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The blowby and normal diesel vibration drive oil to leak at that tube. New seals will help, but with the tube coated with draining oil and a lot of crankcase pressure, it's still gonna seep. How many miles on your engine, what type? You can add that info to your signature
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. |
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I had a friend do this for me, along with starter replacement, at his shop yesterday.
The lower tube is sufficiently cheap (like $20 or so) that if you're paying a tech to do this job it is probably cheaper to trash the tube, but get it out quickly, rather than spend a long time trying to remove it intact. As it happens my lower tube was corroded and leaking, in addition to a rock hard grommet, so it needed to be replaced anyway. Kevin
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'85 300SD |
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Having owned 3 other turbo vehicles the MB drain tube is the worst design I have seen yet. I did the seals when I had the head off my 617 but it still wasn't easy. I don't think the lower tube seated correctly as the grommet was very difficult to seat. It doesn't leak so I am not concerned. I just wonder why MB made such a simple piece so complex. All the other vehicles I have worked on just had a short section of rubber hose to connect the turbo drain to a boss or fitting on the block. Simple, effective, easy to service and cheap. RT
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When all else fails, vote from the rooftops! 84' Mercedes Benz 300D Anthracite/black, 171K 03' Volkswagen Jetta TDI blue/black, 93K 93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K |
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Quote:
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. |
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Still, why didn't they make it one piece with 1 simple, hi-temp seal on the bottom? I'm certainly with you there.
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. |
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Ok sir whunter...here is a question.
What are the part(s) names that we need to purchase to do this job? I see a few different names/parts under fastlane and wanted to be sure. Thanks |
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Answer:
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You need the following parts: #1. Turbo Drain Gasket #2. Turbo Drain Grommet #3. Turbo Drain O-Ring may need this, if tube is bad: #4. Turbo Oil Return Tube |
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