Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

LinkBack Thread Tools Display Modes
Old 06-04-2014, 02:03 AM
Registered User
Join Date: Aug 2010
Location: Sacramento, CA
Posts: 2,543
Condensate Drain Fix - W123 300D

I read posts here about the flimsy foam tube M-B used for the condensate drain, which falls apart. I found mine about gone in my 1985 300D. Some have used heater hose, others made a funnel from the top of a plastic bottle. I first tried the heater hose, but even silicone hose was too tight and stiff to easily work it onto the plastic drain stub.

I read about a plumbing fitting, so tried the one shown from Home Depot. You find it next to the garbage disposals, for connecting the dishwasher hose. Cost ~$3 and fits like an O.J. glove. After the photo (from driver's side foot-well), I stuffed foam insulation around it to keep out engine fumes and noise. Note that in the 82-85 300D, there is a single drain in the middle of the box, which drains onto the tranny. I read that a 300SD has a drain at each end, which is a longer foam tube w/ spring. Those tend to fall apart easier and cause leaks to the floor.

Attached Thumbnails
Condensate Drain Fix - W123 300D-dishwasher-garbage-disposal-adapter-hose.jpg   Condensate Drain Fix - W123 300D-fitting-drain-stub.jpg  
Reply With Quote
Old 06-04-2014, 02:33 PM
Registered User
Join Date: Jul 2007
Location: Southern NH
Posts: 183
Great idea, Bill. I've been meaning to check the condition of mine -- looks like I'll be picking up a dishwasher connector.
05 E320 CDI - 140K miles
82 300D - 200K miles (sold)
Reply With Quote
Old 06-04-2014, 03:53 PM
Registered User
Join Date: Aug 2010
Location: Sacramento, CA
Posts: 2,543
BTW, to access the drain, you only need to remove the under-dash cover. You can reach over the side console carpet, behind the vertical rod, and also from the passenger side if you remove that cover (easier to remove). I have taken that under-cover off so many times I am thinking of storing it the attic. My old Mopars never had one. If you have a 1986+ car, even less room since they stuffed a safety knee bolster under that cover, at least what I saw in a JY car.
Reply With Quote
Old 06-04-2014, 07:25 PM
Registered User
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,585
This drain Fix has come before over the years.

The water on the floor is for cooling your feet on a hot day.

Here are a few threads form the past on fixing this problem.

There are several Links in this thread to other threads on this repair.

Thanks to the forum....a/c drain hose (w/pix)


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
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 10:33 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page