Auxiliary Heater Coolant Circulation Pump, Component Description - Mercedes-Benz OM 471 Introduction Into Service Manual

System components
GF83.70>W>4032H
MODEL 963, 964 with CODE (D6M) Cab hot water auxiliary heater
MODEL 963, 964 with CODE (D6N) Cab and engine hot water auxiliary heater
Location
A901 M2 Circulation pump
KA Coolant outlet
KE Coolant inlet
The circulation pump (A901 M2) is connected on the outside to the
heater.
Task
The circulation pump (A901 M2) pumps coolant out of the
engine's cooling circuit, through the heater unit's heat exchanger
to the heater heat exchanger.
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Auxiliary heater coolant circulation pump, component description

– This printout will not be recorded by the update service. Status: 09 / 2011 –
Design
Located in the circulation pump (A901 M2) is a DC motor, which
drives an impeller in an external housing. Located on the front
side of the circulation pump (A901 M2) is the coolant inlet (KE).
20.7.11
W83.70>1436>11