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Old 11-06-2013, 11:42 PM
Richard Howard Richard Howard is offline
Richard Howard
Join Date: Nov 2008
Location: Western NC Mountains
Posts: 69
I just had the upper neck on the original Behr in the 84 300SD break this afternoon while running at 55MPH on US19E. Luckily I noticed the steam coming from the left hood-to-fender panel gap area and shut down the engine quickly. The same thing happened to the 82 300SD last year. This despite my long knowing that one should never use the upper radiator hose to radiator area as an arm rest when adjusting valves or doing other work.

Thirty year old plastic must evidently deteriorate with the frequent extreme temperature changes of engine coolant.

Someone who has a torque spec for the original MB screw tightened hose clamps for the radiator hoses should post this information so correct tightening can be provided in this area where compression against plastic must exist.
Respect, protect, and maintain complex systems - whether natural or of German design, to benefit from their full potential.

1982 300SD W126.120 with an OM617.950 from a W116.120
1984 300SD W126.120 with an OM617.951

Last edited by Richard Howard; 11-07-2013 at 12:02 AM.
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