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  #16  
Old 11-01-2006, 11:28 PM
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Join Date: Jan 2006
Posts: 311
Sorry, I was thinking the large nipple (where hot coolant is pumped into the top of the radiator) was your problem. For the small one ( not present on my 1980 300 TDs) your solution sounds great.
As for my own situation, I had the big upper nipple break in the summer of 2005, and I swapped out the radiator with a spare that I had, and that was fine until a couple of weeks ago, when it developed a bad leak at the back side of the upper tank. So I have just completed the copper pipe/epoxy repair on the rad that has been in the waiting room since 2005. I used Goop Superweld epoxy paste. And just today I received from Fastlane the new transmission cooler hose to replace the one I ruined trying to remove the leaking radiator, so tomorrow I plan to finish the installation, refill with MB coolant and de-ionized water, and fire it up. I think it will last a long time.
Steve


Last edited by Sbean; 11-01-2006 at 11:40 PM.
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  #17  
Old 11-02-2006, 11:31 PM
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Join Date: Nov 2004
Posts: 164
A temporarily permanent repair that has worked for me is to us Shoe Goo to seal the connection. You will need to put some alcohol (non-consumptive) on a rag and wipe the area down to remove oils, dirt, coolant residue, etc., then apply a moderately generous amount. Follow the directions for set up time. Shoe Goo is pretty common and can be found at discount stores and such.
As I said, it is temporarily permanent because I have used it to repair a hole in an old rear tractor tire and the connection to our window washer fluid line that broke at the reservoir cap years ago. The w/w fluid line needs redoing, mostly from having to manipulate it so much during the repairs recently done and the fact that the reservoir cap is opened to add fluid. The tire is still going strong.
I did the original repairs with Shoe Goo because I had nothing else at hand and wanted an immediate temporary repair until I could do something better, such as get to the dealer to order new parts, which I didn't do because the Shoe Goo kept working. Shoe Goo is not a proper repair but it is some amazing stuff.

Jim W.
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  #18  
Old 12-23-2006, 12:09 AM
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Join Date: Aug 2006
Location: Philadelphia, PA
Posts: 222
I'm tackling this tomorrow (once the rain lets up) - pictures to come...
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1983 MB 300SD Turbo Diesel
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  #19  
Old 12-23-2006, 01:28 AM
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Join Date: Dec 2006
Location: Tallahassee, Florida
Posts: 22
I contacted Trigiris international about an all metal radiator.

He got back to me right quick and seems eagar to do the job.

tigrisint@yahoo.com is the email
713-628-1362 is the number
Sam Abboud is the man's name
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Dan

86 300 SDL
New odometer gears, new rubber fuel lines, removed and plated EGR, redone underhood vacuum system, BoostValve on the turbo, IPod only sound system, changed a couple of window motors, refinished the console wood, changed a couple of switches, removed welded and replaced my oilpan after I cracked it (driving like an idiot), new glowplugs, new/used glowplug relay, sunroof repaired, antique brass boost gauge on the hood.
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  #20  
Old 01-02-2007, 04:10 PM
Running on pure optimism.
 
Join Date: Aug 2006
Location: Philadelphia, PA
Posts: 222
I did this repair, sorry I haven't posted a picture yet.

I bought a 3/8" brass (I think) valve from pep boys. I cut off the old, melted, destroyed stem from the top of the radiator. I drilled a 3/8" hole into the old hole and screwed the new metal stem in, then I sealed it up with some JB weld. Worked like a charm. No leaks.

I'll try to get to posting a picture.
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1983 MB 300SD Turbo Diesel
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  #21  
Old 01-02-2007, 04:52 PM
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Join Date: Feb 2005
Location: San Diego CA and Los Cabos
Posts: 289
I don’t recall if its spelled right but I think the name is Marine tek a super strong epoxy a mechanic used to repair cracks at the head on gas engines, and they hold yes am not kidding I repaired a plastic radiator back in1995 and still holding as new, before that I try epoxy but as soon as it was hot and with pressure it soften and start leaking , the only draw back the marine tek is liquid and takes 24 hrs to harden, what I did I use masking tape shaped like a ½ cup to hold the marine tek in the place I needed it was tricky but it work you can find the stuff at a major auto parts stores or aircraft supply places back then was about $15.00 for ½ an ounce of both the catalyst and the resin.
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2005 S500
87 300 D
61 300 restoring
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  #22  
Old 01-02-2007, 04:59 PM
AHH,What's up Doc????
 
Join Date: Jul 2006
Posts: 1,212
Quote:
Originally Posted by Marshall42 View Post
The radiator on my 82 300sd is leaking from the plastic nipple going to the reserve tank. I tried glue,calking. With no luck. If I take the nipple off completely and screw a threaded brass barbed piece in it's place, is there enough plastic to hold it ?
Any ideas ?
Thanks
Marshall
No, there is not enough plastic to hold a brass fitting! You might get away with using JB weld for a while, but the real question is...... Do you really want to take a chance on a nice car because you nickel and dimed it to death over a radiator??? I know that sounds hard but think of this, if this one part failed, the rest is sure to follow sooner or later and I'm willing to bet sooner than later! It's not worth it when you consider what will happen when your radiator sudenly blows.
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  #23  
Old 01-02-2007, 09:36 PM
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Join Date: Oct 2005
Location: North Carolina
Posts: 76
Thumbs up

I REALLY REALLY like my new Behr radiator, and the new hoses, and the new coolant, and the sense of peace of mind.
Tried the epoxy fix, with very short term success, and the nipple broke off in the hose with no trouble at all.

Just can't get the car up to 90 degrees in the first quarter mile anymore though....

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Mike J
Cary, NC

1987 300SDL
203,400 miles
How NOT to buy a MB Diesel:
Know little or nothing about diesels or Mercedes Benz.
Get the WVO fever.
Drive 70 miles to a used car lot in the country.
Buy the car without having it inspected, because it seems like a good idea at the time....
I'll be back. I'm gonna need help.
I love this car already!


1998 F-150 154,000 miles

1994 Geo Tracker 75,000 Miles
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