W123 300D Turbodiesel; 215,000 miles.

Suddenly, driving in the rain last night, I noticed that the coolant temp was in the plus-125 degree red zone, and there was a mass of steam coming from under the hood. I parked about 2 miles from home and walked; fortunately it was in the parking lot of a local gas station and repair shop. This morning I took photo's and went on EPCNet to determine what part I needed.

It appears the hose (p/n A123 832 84 94) on my car has a "coolant flush/fill connection" in the middle of it. That's what blew up. I cannot find a name, picture or description for this part from any of the normal parts sources.

Opinion? If I simply replace the hose or find something to join the two sections together, will I be good to go?

Thanks.

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Simon Shearer

1986 420SEL

2000 Porsche 911 Millenium Edition Carrera 4
2010 Lexus RX 350
2002 Kia Rio
2002 Hyundai Accent

Get some copper tubing of the right OD to fit the ID of the hose, and youll be OK. Get heavy wall tubing, should be OK for 20 psi at 200F, but no guarantees.

I would change the hose ASAP though. Phil can get them.

Make sure to keep the coolant level correct.

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

I also would find a copper piece to fit. It will work to get the car home, and then you can decide if you want get the proper piece coming or just replace the whole hose. Looks like the original piece was plastic. Which tends to get brittle with age. I'd just replace the whole hose and forget about the other piece.

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replace the hose unless you are in a bind.

1/2 ID threaded pipe fits perfectly.. use galvanized temporarily

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Thanks

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Simon Shearer

1986 420SEL

2000 Porsche 911 Millenium Edition Carrera 4
2010 Lexus RX 350
2002 Kia Rio
2002 Hyundai Accent

I found one of those flush ports on an old pickup I just bought.

Got rid of it immediately.

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Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE

1/2 inch barbed galvanized fitting from HD or Lowe's or Ace or True Value should work just fine. A barbed plastic irrigation fitting would also probably work.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

1/2 " barb is too small I forget what size fit.. but it wasn't as tight as 1/2" ID steel pipe.

the plastic ones will not last more than a few trips, I promise.

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Those flush and fill garden hose connectors have been known to take out many vehicles through failures like that. Those things should never be used.



.

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1983 123.133 California
- GreaseCar Veg System

5/8" brass double barbed fitting from Napa works great.

Thanks - the galvanized 1/2" junction is a good temporary fix - I was able to use that fix and get the car home. I have a new hose on order from Phil...

__________________
Simon Shearer

1986 420SEL

2000 Porsche 911 Millenium Edition Carrera 4
2010 Lexus RX 350
2002 Kia Rio
2002 Hyundai Accent