I have the engine FSM but was not able to find any reference to it. What does it do? Is a serviceable item and how? I am guessing some kind of breather/filter?

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

From the connections, it looks like the oil separator. I don't have a 240, so I am not 100% sure.

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"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"

Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad

Looks like the Crud Adsorption Device..

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Tomas, Sweden
1966 Mercedes Benz 230S with OM617.912, automatic. Disk brakes from W108
1983 Mercedes Benz 300TD grey, OM617.912 and 5-speed manual
1983 Mercedes Benz 300TD blue 7-seater, OM617.912 and 5-speed manual

I dont have one of those on my 240

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06 VW Jetta TDI

I think they were '82 and '83 only, but don't quote me on that.....

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

Yup, it's the oil separator.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL

EEEEEeeewwwww.....

hey, does a '79 240 have the drain connections for one?

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'79 240D 4 speed manual 105k miles

Sounds like something on a Klingon ship but not on a 240D.

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Yep, but it keeps getting clogged up with Qagh!!!!!

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

That one is actually clean. The reason it looks ratty is that they are covered with foam , presumably to cool the oil and get it to precipitate and head back down to the oil pan. No, there isn't a provision to easily mount one on an earlier 240D, nor a VW Rabbit although I am going to give it a crack.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)

I bought a Ca, "82" 240D last month and it has that oil seperator on it. There is nothing in the owners manual about serviceing it. I thought it was a "Ca" thing as I have another "82" that does not have it so I would like to know about these also.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

Mid/late 81, 82 and 83 240D's have it.

My 83 Federal has it and was wondering what it was. Guess that answers that

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-Dan
1983 240D AT, 163K running on VO, "The Patience Tester"

Mine looks about like that, and is the only thing that leaks on my engine. A slow drip that runs down the tube and gets on the oil pan.

What is the purpose of it (I read the what, what is the why?) and how/why is it leaking? Can you take it apart? Does it have o-rings or something to service?

Thanks!

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2002 E320 Sedan 93K Designo Mocha Black Metallic!
1995 E320 Wagon 205K Black Wagon
1982 240D 183K SloPoke

I believe each of these cars are the final production year for that model.

I don't really think you can take it apart, at least I, for one, have never done it. It serves to separate oil mist out of the blowby , cool it , and return a portion of it to the oil pan. There is a similar lashup in the middle of the turbodiesel air cleaner assembly. If yours leaks from its base, you might consider removing the downtube and making sure it isn't blocked. Also, renew any o-rings you find on the end or on the downtube.

Rick

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)