3.2L - Cooling System - Engine Code(s): Bub & Cbra: Overview Volkswagen Eos I

COOLING SYSTEM OVERVIEW, BODY SIDE

Note. Coolant hose connection diagram. Refer to COOLANT HOSE CONNECTION DIAGRAM .

Scheme 27

1. Upper Coolant Hose From the coolant thermostat housing.
2. O-ring Replace if damaged.
3. Radiator Removing and installing, refer to «RADIATOR»(ref-475531-S05868235222012052300000) . After replacing, replace the entire amount of coolant.
4. Gasket
5. Cap The pressure release valve must open at a pressure of 1.4 to 1.6 bar. Checking, refer to «PRESSURE RELIEF VALVE IN CAP, CHECKING»(ref-475531-S00705292052012052300000) .
6. Connector
7. Bolt 3 Nm
8. Expansion Tank Cooling system leakage test, refer to «COOLING SYSTEM, CHECKING FOR LEAKS»(ref-475531-S01104688522012052300000) .
9. Bracket For the radiator.
10. Bolt 7 Nm
11. Mount
12. Nut 5 Nm
13. Fan Shroud Removing and installing, refer to «FAN SHROUD AND FANS»(ref-475531-S13416366642012052300000) .
14. Bolt 5 Nm
15. Coolant Fan 2 -V177- Removing and installing, refer to «FAN SHROUD AND FANS»(ref-475531-S13416366642012052300000) .
16. Connector
17. Coolant Fan -V7- With the coolant fan control module -J293-. Removing and installing, refer to «FAN SHROUD AND FANS»(ref-475531-S13416366642012052300000) .
18. Lower Coolant Hose To the coolant thermostat housing.
19. Retaining Clip
20. Engine Coolant Temperature Sensor on Radiator Outlet -G83
21. O-ring Always replace.

COOLING SYSTEM OVERVIEW, ENGINE SIDE

Note. Coolant hose connection diagram. Refer to COOLANT HOSE CONNECTION DIAGRAM . Location of the non-return valve, refer to COOLANT HOSE CONNECTION DIAGRAM .

Scheme 28

1. from the Auxiliary Heater Not available in the US/Canadian market.
2. to the Auxiliary Heater Not available in the US/Canadian market.
3. Bolt 45 Nm
4. from the Expansion Tank Lower Connection
5. Bolt 10 Nm
6. to the Expansion Tank Upper Connection
7. from the Heater Coolant Shut-Off Valve -N279- Only on vehicles with optional equipment.
8. Bolt 10 Nm
9. to the Heater Coolant Shut-Off Valve -N279- Only on vehicles with optional equipment.
10. to the Heater Core
11. from the Transmission Oil Cooler
12. to the Transmission Oil Cooler
13. Bolt 8 Nm
14. Coolant Thermostat Housing Overview, refer to «COOLANT THERMOSTAT HOUSING OVERVIEW»(ref-475531-S42028384062012052300000). Removing and installing, refer to «COOLANT THERMOSTAT HOUSING»(ref-475531-S19621824262012052300000).
15. Bracket
16. O-ring Always replace.
17. Engine Coolant Temperature Sensor on Radiator Outlet -G83
18. Retaining Clip Make sure it is secure.
19. from the Radiator Lower Connection
20. to the Radiator Upper Connection
21. O-ring Always replace.
22. Oil Filter Bracket With the oil cooler.
23. Bolt 23 Nm
24. Coolant Line To the coolant thermostat housing.
25. After-Run Coolant Pump -V51- Attached to the accessory bracket, 8 Nm. To remove, remove the accessory bracket. Refer to «Removal and Installation»(ref-475571-S07865064812012052300000). Location of after-run coolant pump. (Scheme 29) After-run coolant pump, checking. Refer to «AFTER-RUN COOLANT PUMP, CHECKING»(ref-475531-S01932928142012052300000).
26. Coolant Pump Check for ease of movement. Removing and installing, refer to «COOLANT PUMP»(ref-475531-S32883608342012052300000).
27. Coolant Pump Pulley Removing and installing «COOLANT PUMP»(ref-475531-S32883608342012052300000).
28. Bolt/Nut 20 Nm
29. Bolt 8 Nm

Scheme 29

The after-run coolant pump -arrow- is secured to the accessory bracket.

Remove the accessory bracket from the cylinder block.

Accessory Bracket Bolt Tightening Sequence

First, tighten the alignment bolts -2 and 4- by hand.

Then, tighten the bolts -1, 3 and 5- by hand.

Then, tighten all the bolts uniformly and in a diagonal sequence.

Tightening specification: 23 Nm

COOLANT THERMOSTAT HOUSING OVERVIEW

Note. Coolant hose connection diagram. Refer to COOLANT HOSE CONNECTION DIAGRAM .

Scheme 30

1. O-ring Always replace.
2. Retaining Clip Make sure it is secure.
3. Coolant Thermostat Housing Removing and installing, refer to «COOLANT THERMOSTAT HOUSING»(ref-475531-S19621824262012052300000) .
4. Bolt 8 Nm
5. Coolant Line To the transmission oil cooler.
6. Bracket
7. Coolant Thermostat Removing and installing, refer to «COOLANT THERMOSTAT»(ref-475531-S10014299312012052300000) . Checking: Heat up thermostat in water. Starts to open: approximately 80 °C (176 °F). End: approximately 105 °C (221 °F). Opening lift: at least 7 mm.
8. Adapter
9. Seal Always replace.
10. Engine Coolant Temperature Sensor -G62
11. Plug