W116

78 300SD Turbo Connector Hose

Is there a particular type of hose that must be used for the Turbo Connector Hose?

My turbo had a braided hose, similar to that of the fuel line return hoses but larger, that was leaking pretty badly at both ends. I removed it and took it into my local parts store and the guy at the counter said that I needed that particular style hose. He cut me a length of 3/8" fuel hose to hold me over until I could get my hands on some.

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Auxillary water pump valve.

On the 80 300sd that I just purchased it had a shutoff valve between the engine block and the tube coming from the auxillary water pump. I have replaced the thermostat and coolant but I was not getting any increase in temp on the hose leading to the aux. pump. I know this has something to do with the climate control so I wanted to see if there was a blockage or if the valve was frozen shut. I used a thermo gun to see the different temps. When I reconnect3ed the hose without the valve there4 was no coolant flowing out so I assume this is where I mite have had a air pocket.

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