Cooling System Components, Engine Side

Cooling system components (on engine), assembly overview





1- 15 Nm
2- Toothed belt
^ Mark direction of rotation before removing
3- Coolant pump
4- O-ring
^ Replace
5- Coolant thermostat
^ Opening begins approx. 87°C
^ Ends approx. 102°C
^ Opening lift min. 7 mm
6- O-ring
^ Replace
7- Connecting piece
8- To heat exchanger
9- O-ring
^ Replace
10- Connector
^ 4-pin
11- Engine Coolant Temperature (ECT) Sensor G62
^ With Engine Coolant Temperature (ECT) Gauge Sensor G2
^ For engine control module
^ If necessary, release pressure in cooling system before removing
12- Retaining clip
13- Upper coolant hose
^ Ensure seated tightly
14- Lower coolant hose
^ Ensure seated tightly
15- Oil cooler
16- From heat exchanger
17- Lower coolant line
18- 10 Nm
19- Cap
^ Check using cooling system tester V.A.G 1274 and adapter V.A.G 1274/9 Test pressure 1.4 to 1.6 bar positive pressure
20- Seal
^ Replace if damaged
21- 10 Nm
22- Expansion tank
^ Perform cooling system leakage test with cooling system tester V.A.G 1274 and adapter V.A.G 1274/8.
23- To turbocharger
24- 15 Nm
25- To top coolant hose
^ Only engine code AWP with automatic transmission
26- After-run coolant pump V51
^ Only engine code AWP with automatic transmission
27- From turbocharger
^ Only engine code AWP with automatic transmission