Cooling System Components (on Engine), Assembly Overview

Cooling system components (on engine), assembly overview





1 - Toothed belt
^ Mark direction of rotation before removing
^ Check for wear
^ Do not kink

2 - O-ring
^ Replace

3 - Connector
^ 4-pin

4 - Engine coolant temperature (ECT) sensor G62
^ For engine control module
^ If necessary release pressure in cooling system before removing

5 - O-ring
^ Replace if damaged

6 - 10 Nm

7 - To turbocharger

8 - 15 Nm

9 - To upper radiator

10 - Retaining clip
^ Check for secure seat

11 - Connecting piece

12 - To heater core

13 - Upper coolant line
^ Secured to cylinder head

14 - Coolant hose

15 - Coolant hose

16 - Oil cooler

17 - From heater core

18 - 20 Nm

19 - Lower coolant line
^ Fastened to oil filter bracket

20 - Sealing plugs
^ Ensure seated tightly

21 - 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 pressure

22 - Coolant reservoir
^ Check using cooling system tester V.A.G 1274 and adapter V.A.G 1274/8

23 - Lower coolant hose
^ From lower radiator
^ Secured to radiator and connection piece with a retaining clip
^ Ensure seated tightly

24 - Connecting piece

25 - Coolant thermostat
^ Installed location:
- Clip must stand vertical
^ Checking:
- Heat up thermostat in water Opening begins: approx. 86°C Opening lift: at least 7 mm

26 - Coolant pump
^ Check for ease of movement
^ If damaged or leaking replace completely

27 - Compact bracket
^ For generator, tensioner, viscous fan clutch and power steering pump

28 - Fan wheel