Need flow diagram for heater of 83 617 turbo - PeachParts Mercedes-Benz Forum

t walgamuth · #1 03-22-2019, 04:25 PM

This is for my 39 Studebaker with mb diesel. The heater won't make heat.

Diesel911 · #2 03-23-2019, 12:03 AM

Quote:

Originally Posted by t walgamuth

This is for my 39 Studebaker with mb diesel. The heater won't make heat.

Not sure if this is what you need.

t walgamuth · #3 03-23-2019, 02:07 PM

Quote:

Originally Posted by Diesel911

Not sure if this is what you need.

Thanks 911! That is perfect.

Rocky, Well, I thought that was what we are talking about. are there two electric pumps involved in the factory setup?

rocky raccoon · #4 03-23-2019, 07:42 AM

Tom, did you install the stock coolant booster pump also? That pump was installed by MB to aid in coolant flow at slow engine speeds. I was told that if the pump is not working it can impede the flow of coolant to the heater. As a quick winter fix for a similar problem I simply bypassed the pump and got plenty of heat.

t walgamuth · #5 03-23-2019, 02:09 PM

So I looked at the car yesterday with John. It appears to have a booster pump which must have come with the vintage air unit. It also looks to have a vacuum hose involved. John thought perhaps that was the source of the problem since a diesel lacks vacuum. There is a vacant nipple on the vac system for the brakes so that might need to be connected.