Mercedes Heater Water ('Mono') Valve-Within-A-Valve??

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Posted to Technical Discussion Forum on 12/18/1999 1 Reply

NetTechs:

1981 MB 300SD (turbo diesel) HVAC system.

I understand the basic operating theory of the in-hose heater water pump (keeps hot water circulating through heater core at low RPMs when heat is requested) and the mono (water shutoff) valve/solenoid (e... Login to read more.

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