Cooling System: Diagrams

A. Model 115.1 and 123.1 (1st version up to February 1979)





Circuit at coolant temperatures above approx. 94 °C
1 Coolant pump
2 Radiator
3 Radiator cap, code No. 100
4 Thermostat
6 Temperature transmitter for telethermometer
12 Regulating valve for vehicle heater
13 Heat exchanger
A to radiator
B from radiator
C to coolant pump (bypass line)
D from engine
E sent line


B. Model 123.1 (2nd version starting February 1979)





Circuit at coolant temperatures above approx. 94 °C.
1 Coolant pump
2 Radiator
4 Thermostat
6 Temperature transmitter for telethermometer
12 Regulating valve for vehicle heater
13 Heat exchanger
A to radiator
B from radiator
C to Coolant pump (bypass line)
D from engine
E vent me