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  #1  
Old 11-16-2013, 03:55 PM
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broken vacuum nipple

Ahhhh!
while trying to CAREFULLY check all my vacuum connectors today, I broke a tube off at the first nipple off the vacuum line to the brake booster.

Am I dead in the water until I get a new main line from PeachParts? Or does anyone have a way I could drive it in the meantime??

Car is the 1985 300TD

Thanks, John



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Old 11-16-2013, 04:01 PM
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The previous owner of my 300D did this and the temporary solution was to get a larger diameter vacuum hose to slip around that 1-2mm of lip where the port flares out before the barbed part of the vacuum line. If you still have this, you should be able to get by for quite a while. For some insurance, you can rubber cement or silicone the outside to ensure the new hose stays on. This lasted me a few thousand miles.

You can get the main vac line from a junkyard if you bring along a mityvac and can ensure it holds vacuum. No need to pay so much on just a hard plastic hose. I paid less than $8 for mine.

Phil Forrest
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Old 11-16-2013, 04:07 PM
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Thanks for the speedy reply. I will try the patch until I can find a replacement.
Unfortunately there are not many yards with these old beasts up here in New England, but I will put a request on the used parts page.
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Old 11-16-2013, 04:26 PM
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Surely some of the guys in the ChowdaQ thread could point you in the right direction.
I'm heading to the junkyard in a few (I'm in New Mexico right now) and I'd pull you one but the shipping would be 5x as much as the part.
Good luck!

Phil Forrest
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"The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests."
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Old 11-16-2013, 04:46 PM
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You should be able to drive it, you'll just have to shut it off manually, and most of the vacuum stuff won't work.
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Old 11-16-2013, 04:47 PM
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Actually, the yards here are just plain devoid of W123s.
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  #7  
Old 11-16-2013, 09:10 PM
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Picture doesn't work...but when I did this....I simply wrapped the broken nipple part with electrical tape and spliced what ever ran off it to the other nipple worked great for a long time...
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Old 11-16-2013, 09:24 PM
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thanks

Thanks for the help. Still haven't figured out the picture link for the long term.
Looks like I can repair it until I find one to replace.
Jooseppi is right. Yards up here have nodda for old mercedes. I need to travel more.
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Old 11-16-2013, 09:49 PM
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Electrical tape to cover the broken port, and add a tee to the other line.

Long term-silicone a larger hose like Phil said
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Old 11-16-2013, 10:03 PM
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Used? It's $30 for a new MB part.

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  #11  
Old 11-16-2013, 10:44 PM
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I forget what that first nipple supplies vacuum to, but if it's something non-essential, you can just duct tape it while you wait for the replacement part to show up.

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