gf2000p0800ac

Coolant circuit as-built condition

Type gf · topic 20.00 · version 0100 · 2002-07-09

Applies to: ENGINES 601.91, 602.91, 603.91 (except 601.913)

Where it sits

Function group 1 Engine › 20 Engine cooling system › 20.00 General — Series 601 (models 911, 912) · Series 602 (models 91*)

EinPAS 15 Engine › 15.25 Engine cooling system › 15.25.1 Basic information — Series 601 (models 911, 912) · Series 602 (models 91*)

Also applies to engines/gearboxes: 603 91*

GF20.00-P-0800AC

Coolant circuit as-built condition

26.5.00

ENGINES 601.91, 602.91, 603.91 (except 601.913)

Coolant circuit as-built condition

P20.00-0404-06

1 Compensation tank

2 Overflow line

3 From the cylinder head to the radiator

4 Return from heater (heat exchanger)

6 Feed to heater (heat exchanger)

9 From the radiator to the coolant pump via the coolant thermostat

12 Filling hose

13 Vent pipe

A Heater

B Cooled coolant from the radiator

C Cooled coolant

D Radiator circuit in excess of 100 °C

The 601-603 engines are equipped with a sealed cooling system. The coolant circuit is controlled by the coolant thermostat.

A distinction is made between short-circuit operation (up to approx. 85 °C), mixture (85-100 °C) and operating state (in excess of 100 °C).

The duo valves are used to control the coolant temperature in the heater's heat exchanger (6).

In the compensation tank (1), the temperature-dependent volumes of the cooling system are compensated.

In the event of high ambient temperatures, coolant may escape at the overflow line after the engine has been switched off.

Coolant thermostat short-circuit operation function

GF20.00-P-1102A

Coolant thermostat mixture function

GF20.00-P-1103A

Coolant thermostat operating state function

GF20.00-P-1104A

Referenced documents