Cooling system components (on engine, front), removing and installing
NOTE:
The following list refers to items in Fig 1.
- Connection
- For thermostat
- O-ring
- Replace
- Thermostat
- Removing and installing, see COOLANT THERMOSTAT, REMOVING AND INSTALLING
- Note installation position, see COOLANT THERMOSTAT, REMOVING AND INSTALLING ,
- Removing and installing thermostat
- Checking: heat the thermostat in water
- Starts to open at about 86°C
- Opening travel: at least 7 mm
- Bolt
- Tightening torque: 10 Nm
- Filler cap
- Test with cooling system tester VAG 1274 and adapter VAG 1274/9
- Test pressure 1.4-1.6 bar
- O-ring
- Replace if damaged
- Bolt
- Tightening torque: 10 Nm
- Expansion tank
- Carry out leak test of cooling system with cooling system tester VAG 1274 and adapter VAG 1274/8
- To rear water line
- Top coolant hose
- Secured to radiator with retaining clip
- Check for secure seating
- See DIAGRAM OF COOLANT HOSE CONNECTIONS
- Coolant line
- Rear toothed belt guard
- Gasket
- Always replace
- Coolant pump
- Check that pump runs freely
- If damaged or leaking replace complete
- Removing and installing, see COOLANT PUMP, REMOVING AND INSTALLING
- To front coolant line
- Bolt
- Tightening torque: 10 Nm
- Bolt
- Tightening torque: 25 Nm
- Lower coolant line
- Oil cooler
- Bolt
- Tightening torque: 25 Nm
- Bolt
- Tightening torque: 10 Nm
- Belt pulley
- For viscous fan
- Bolt
- Tightening torque: 10 Nm
- Fan wheel for viscous fan
- Viscous fan coupling
- Note left-hand thread
- Tightening torque only applicable when using open-end spanner 3312
- Tighten to 37 Nm
- Removing and installing, see VISCOUS FAN, REMOVING AND INSTALLING
- Bolt
- Tightening torque: 25 Nm
- Bracket
- For viscous fan
- From bottom of radiator