this weekend. What else should I consider doing while I have the intake manifold off? I replaced my glowplugs about 30K ago. Fuel lines and shut-off valve were replaced last week. So, I'm wondering if anyone had suggestions as to other items to check while I'm "in there".

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Ed
-1984 Mercedes 190D 2.2 5-speed gray market(bought@30,000 miles) (Sold back to original owner@170,000 miles)
-1999 Mercedes E300DT (245,000 miles)
-1999 Mercedes S500 Grand Edition (80,000 miles)

The breather plumbing is made of rubber and plastic components; the rubber parts turn hard and brittle with time and heat. Being brittle, they lose flexibility and leak oil all over the valve cover; they also break apart when you try to remove them. If they are not now actively leaking, consider replacing the rubber parts at a later date. See this thread for more discussion of the subject.

Also check any vacuum hoses that are under the intake manifold and replace them if they look the slightest bit old. Your time is a lot more valuable than a few bits of hose.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Lukily the turbo has none of the parts of the non-turbo version. The vent system consists of a single tube routed to the turbo inlet...

Ed, I've read that you have to remove the bolts for the intake tube (EGR) from the bottom of the car. Keep us posted on how it goes. I have to do this soom myself.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

There is one bolt accessed from below and one on a clamp on the side of the EGR that you can reach from the top usually, especially if the last guy who put it back did it from the side and not from below.

A tip to reinstall the bottom bolt is to put a dab of white grease into the hex head if you don't have a magentic tool and it will stick to the wrench, then you can use a 24" extension from beneath to get it into the hole. If you are lucky you'll get it back together in about the same 5 minutes it takes to get it apart.

Ed - it sound like you have recently taken care of all of the other items under there, so just do the DVs carefully, follow the torque procedures when you replace them and you should be good to go. Good luck!

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Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz

Do yourself a favor and leave the delivery valve element and collar inside the pressure holder alone.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Thanks for the tips guys. I'll post on my success.

Definitely. I was reading the DIY on this procedure and will not mess with taking the valve element out of the holder. I'm going to take it slow and careful. Plus, my diesel mechanic is letting me use his garage to do this one. I'm sure I can get some guidance from him during the process if I get stuck or have questions. I'll definitely owe him some beers after this.

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Ed
-1984 Mercedes 190D 2.2 5-speed gray market(bought@30,000 miles) (Sold back to original owner@170,000 miles)
-1999 Mercedes E300DT (245,000 miles)
-1999 Mercedes S500 Grand Edition (80,000 miles)

I completed my delivery valve seals and egr cleaning on Saturday morning. Everything went well. No problems at all. Thank you for your advice. Especially TMAllison. Those PM's about the delivery valve helped me out.

__________________
Ed
-1984 Mercedes 190D 2.2 5-speed gray market(bought@30,000 miles) (Sold back to original owner@170,000 miles)
-1999 Mercedes E300DT (245,000 miles)
-1999 Mercedes S500 Grand Edition (80,000 miles)