I have a (new to me) 1985 300 Turbo diesel and this was hanging down by the master cylinder. I hope somebody can tell me where it attaches too. The online service manual wasn't much help and I don't have another vehicle to compare it to.
Thanks

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Should go between injector pump vacuum shut-off valve and the line back into the ignition switch. This is not factory, but commonly done so that if the vacuum shut-off valve failed and started leaking oil back through the vacuum line, you could spot it and fix the problem before the oil got to the ignition switch and caused trouble there.

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Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

Interesting, so in your opinion is it ok to leave or should I return to stock configuration. I will not hold you responsible for your advice, but I do appreciate it. Thanks for your reply.

Hmm... if the lines leading to it are black, it's probably a vent for various vacuum amplifiers in the engine bay. If so, the filter is the last stop before the line continues into the driver footwell where it's left open. That allows the vacuum amplifiers to vent cleaner cabin air. See item 85 in this diagram -



Sixto
MB-less

Yes, that's a great schematic and I believe it is #85. I thank you both for helping. I purchased an official service manual in actual book form, but the pictures are terrible, like they were photographed through a screen door. Again thanks.

Were you in Gardner/Minden a few days ago? There was a red 123 going SB (you?) and a ivory 300d (we were passing the guy) and a ivory 240D (us) going NB.

Don`t see many 123`s around here. The town was saturated that day.


Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Looks like I was wrong! If that is #85 in the diagram, ignore my post, especially if your engine shuts off with the key....

__________________
Respectfully,
/s/
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC

Charlie, No I wasn't in Gardnerville, just got the car and working on "bugs"

Maxbumpo, No problem, thanks for your initial advice.