I have a spare trunk lid for when you fill that one up . I hit it with a stick, and it seems good.

What do you think of my new signature?

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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____ "Your sense of humor is still loco... " -MBeige ____ "Señor Luna, your sense of humor is quite järjetön" -Delibes

1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod

2 Samuel 12:13: "David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."

Nope that's okay, I am just going to cover my car with duct tape....when it gets full, then I can use a sharpie

Umm yes I know the cops after me, its nothing new..... would you like the link, with my mug shot on it

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Looks like something you'd see on crownvic.net.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.

Narrowing it down to this:http://http://www.peachparts.com/shopforum/diesel-discussion/190995-suddenly-leaking-lot-oil-air-filter-housing-help.html

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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K

I don't see a kit for the vacuum pump on pelican parts?

Could someone point me in the right direction?

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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K

1979 Mercedes-Benz 240D Sedan - Emissions Equipment - Page 1

Generally people use "Repair Kit - Vacuum Pump Valves" and "Repair Kit - Vacuum Pump Diaphragm", both about 1/3 of the way down the first page of that link.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).

You have probably found the more useful threads on the repair of the diaphragm already. But this same project was my first repair on my 220d, so I did a brief thread on the subject. After you have read the better threads, perhaps my experiences will be helpful too.
Vacuum pump diaphragm replacement, a beginner's perspective
Good luck.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).

Shortsguy1,

Thanks for the parts link and excellent write-up!

You mentioned you regretted using the FEBI brand - was it just the screws or would you have gone with the MBZ or other upgraded brand for the whole kit?

So it appears there are two kits - one is the diaphragm (definitely need this) and another "valves". Wondering if I need both?

I'm looking to add some new check (?) valves and connectors as well.

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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K

I think most people do both the diaphragm and the check valves, simply because once they are covered in oil, it is easier to just replace the check valves. Also, they also do fail, so it is only a small additional expense to do both repair kits. Febi is fine for these parts. I would save your money and not buy genuine in this case.

My only regret was using the screws they supplied. I should have just re-used all the old screws. They are flathead, and the access is a little awkward, so it was easy to strip the new ones.

There is differing schools of thought on pretensioning the diaphragm during installation. I don't remember all the different approaches, but technically you are supposed to pull the whole vacuum pump off the engine to do the repair. I didn't do that to save time and reduce the number of things I could mess up. But if you do pull it off the engine, you would need to order a vac pump gasket as well (on the same parts page I linked to above).

As an aside, I have never heard of Effbe as a brand. It sounds like a knock-off of Febi, which is funny because Febi is not exactly famous for their quality these days. I cannot advice on those diaphragms, but if you chose to use a different vendor, Febi diaphragm's are available.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).

Hmmm, I guess Effbe is a legit diaphragm company:
Welcome to the EFFBE website
So maybe that would be better than a re-boxer like Febi. In the end, I have never heard of anyone complaining of poor quality aftermarket diaphragms, so I don't think you can go wrong with that decision.

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).

Don't the W123 diaphragm pumps have the same lever ball-bearing issue as the W123 piston-pumps -
where parts of a failed bearing can fall into the timing-chain?
If so you mignt want to consider just replacing the whole pump.

Happy Motoring, Mark

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DrDKW

Before rebuilding or replacing the vac pump do more diagnosis. Disconnect the pipe and hose and blow into it (your mouth will do). You shouldn't be able to blow through it if the diaphragm is good.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

The other option is to install a piston type vacuum pump from a 300D or any of the five cylinder engines. After two diaphragm repairs I made the switch.
I think the diaphragm type pumps don't like high RPM.

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1984 300SD turbo 126
"My true love"

God made me an atheist and who am I to question His wisdom

My '82 240D, and the '79 or '80 Pick-N-Pull 240D I once pulled a temporary spare from, used piston pumps, with no vacuum exhaust line connected to the intake. Those pumps exhaust vacuum into the crankcase, via the timing-chain housing.

Happy Motoring, Mark

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DrDKW

Hmmm...was ready to order...

But a simple test is recommended: to blow into the hose to tell if the diaphragm is still good.

Or swap pumps with a 300 type to get away from the diaphragm design.

But swapping pumps might require some modding - on an easy scale or ?

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1991 300E 124.030 103.983KE 722358 03 412178
207K

1979 240D 123.123 250K (Project car)

2000 Ford Ranger, 187K

2015 Dodge Ram 1500 EcoDiesel 37K