2.0L - Cooling System - Engine Code(s): Cbfa & Ccta: Other Volkswagen Eos I рестайлинг

COOLANT SYSTEM

Note. Secure all hose connections with hose clamps appropriate for the model. The arrows on the coolant pipes and the ends of the coolant hoses must align when installing.

COOLANT HOSE CONNECTION DIAGRAM

Vehicles with a Manual Transmission

Scheme 15

1. Radiator
2. After-Run Coolant Pump -V51
3. Coolant Pump
4. Coolant Thermostat
5. Oil Cooler
6. Cylinder Head and Cylinder Block
7. Turbocharger
8. Coolant Expansion Tank With the cap. Pressure relief valve in cap, checking. Refer to «COOLING SYSTEM, CHECKING FOR LEAKS»(ref-475530-S10813217352012052300000) .
9. to the Auxiliary Heater Not available in the US/Canadian market.
10. from the Auxiliary Heater Not available in the US/Canadian market.
11. Heater Core
12. Coolant Connection

Vehicles with a Automatic Transmission

Scheme 16

1. Radiator
2. After-Run Coolant Pump -V51
3. Coolant Thermostat
4. Coolant Pump
5. Oil Cooler
6. Cylinder Head and Cylinder Block
7. Turbocharger
8. Coolant Expansion Tank With the cap. Pressure relief valve in cap, checking. Refer to «COOLING SYSTEM, CHECKING FOR LEAKS»(ref-475530-S10813217352012052300000) .
9. to the Auxiliary Heater Not available in the US/Canadian market.
10. from the Auxiliary Heater Not available in the US/Canadian market.
11. Heater Core
12. Transmission Oil Cooler
13. Coolant Connection
14. Thermostat for the Transmission Oil Cooler On some vehicles, the thermostat is located on the outflow side of the transmission oil cooler.

Scheme 17

1. Bolt 9 Nm Tightening sequence (Scheme 19)
2. O-rings Always replace.
3. Connection
4. Retaining Clip Only with the inserted version. Make sure it is tight.
5. Bolt 4 Nm Only with the threaded version.
6. Retaining Plate Only with the threaded version.
7. Engine Coolant Temperature Sensor -G62- Removing and installing, refer to «Engine Coolant Temperature Sensor -G62»(ref-475530-S21753595782012052300000).
8. O-ring Always replace.
9. Coolant Pump Removing and installing, refer to «COOLANT PUMP»(ref-475530-S20135121362012052300000). On a new coolant pump, remove the protective cap.
10. Gasket Always replace.
11. Centering Pin Quantity: 2
12. Toothed Belt For the coolant pump. Removing and installing, refer to «COOLANT PUMP TOOTHED BELT»(ref-475530-S08878744792012052300000).
13. Toothed Belt Guard
14. Bolt 9 Nm
15. Bolt 10 Nm + an additional 90° (1/4) turn. Always replace. Has left hand threads.
16. Drive Gear for the Toothed Belt Installed position: The collar on the drive gear faces the transmission.
17. Shaft Seal Removing and installing, refer to «COOLANT PUMP DRIVESHAFT SEAL»(ref-475530-S03803638822012052300000).
18. Balance Shaft
19. Coolant Thermostat The coolant thermostat can be checked in "Guided Fault Finding" under "Function and Component Selection". Removing and installing, refer to «COOLANT THERMOSTAT»(ref-475530-S41810282272012052300000).
20. Centering Pin
21. O-ring Always replace.
22. Connecting Piece
23. Bolt 9 Nm

Scheme 18

Tighten the bolts in sequence -1 through 5- to 9 Nm.

Scheme 19

1. Front Coolant Pipes Removing and installing, refer to «FRONT COOLANT PIPES»(ref-475530-S11182268892012052300000) .
2. Coolant Hose From the turbocharger.
3. Coolant Hose To the coolant expansion tank.
4. Bolt 3.5 Nm
5. O-ring Always replace.
6. Coolant Hose To the heater core.
7. Small Coolant Pipe Removing and installing, refer to «SMALL COOLANT PIPE»(ref-475530-S11097070632012052300000) .
8. Bolts 9 Nm
9. Coolant Hose
10. Bolt 5 Nm
11. Coolant Hose From the after-run coolant pump -V51-.
12. Coolant Hose To the after-run coolant pump.

Scheme 20

1. Bracket
2. Bolt 40 Nm
3. Coolant Hose
4. Coolant Hose
5. After-Run Coolant Pump
6. Bracket
7. Bolt 8 Nm

Scheme 21

1. Coolant Fan -V7- Removing and installing, refer to «COOLANT FAN AND COOLANT FAN 2»(ref-475530-S25410107552012052300000).
2. Nut 10 Nm
3. Fan Shroud
4. Lower Coolant Hose To the connection for coolant thermostat.
5. Retaining Clip
6. Engine Coolant Temperature Sensor on Radiator Outlet -G83
7. O-ring Replace if damaged.
8. Upper Coolant Hose From the coolant pump.
9. O-ring Replace if damaged.
10. Bolt 5 Nm To the charge air cooler.
11. Radiator Removing and installing, refer to «RADIATOR»(ref-475530-S40506556982012052300000). After replacing, replace the entire amount of coolant. Engine code CBFA: With the radiator identification sensor -G611-. see scheme 17
12. Nut 10 Nm
13. Bolt 5 Nm To the radiator.
14. Coolant Fan 2 -V177- Removing and installing, refer to «COOLANT FAN AND COOLANT FAN 2»(ref-475530-S25410107552012052300000).

Scheme 22

The -arrow- indicates the direction of travel

A- Radiator

B- Radiator identification sensor.

Note. The radiator identification sensor can only be replaced with the radiator.

COOLING SYSTEM, CHECKING FOR LEAKS

Special tools and workshop equipment required

1. Cooling System Tester -V.A.G 1274 B
2. Adapter -V.A.G 1274/8
3. Adapter -V.A.G 1274/9

Test Conditions

1. The engine is at operating temperature

Test Sequence

Open the cap on the coolant expansion tank.

Install the adapter -V.A.G 1274/8- on the coolant expansion tank.

Clamp the connecting piece -V.A.G 1274 B/1- in the adapter -V.A.G 1274/8-.

Connect the connector piece -V.A.G 1274 B/1- to the cooling system tester -V.A.G 1274 B- using the connecting hose.

Scheme 23

Generate a positive pressure of approximately 1.0 bar using the tester hand pump.

If the pressure drops

Look for leaks and correct.

Checking the pressure relief valve in the cap

Install the cap to the adapter -V.A.G 1274/9-.

Clamp the connecting piece -V.A.G 1274 B/1- in the adapter -V.A.G 1274/9-.

Connect the connector piece -V.A.G 1274 B/1- to the cooling system tester -V.A.G 1274 B- using the connecting hose.

Scheme 24

Actuate the hand pump.

1. The pressure release valve must open at 1.4 to 1.6 bar.

COOLANT PUMP

Removing

Remove the small coolant pipe. Refer to SMALL COOLANT PIPE .

Disconnect the electrical connector -1- from the throttle valve control module -J338-.

Scheme 25

Remove the bolts -arrows- and remove the throttle valve control module.

Remove the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT .

Remove the nut -1-, bolt -2- and intake manifold support.

Scheme 26

Remove the bonded rubber bushing for the intake manifold support from the intake manifold.

Remove the engine coolant temperature sensor -G62-. Refer to one of the following

Inserted version, refer to Engine Coolant Temperature (ECT) Sensor with a Clip .

Threaded version, refer to ECT Sensor with a Retaining Plate .

Remove the bolts -1 through 5-.

Remove the coolant pump from the centering pin and the engine oil cooler.

Installing

Note. Replace the gaskets and O-rings.

Lubricate the O-rings -4- with coolant.

Scheme 27

Make sure both centering pins are installed in the cylinder block.

Install the connecting piece -2- into the engine oil cooler -1-.

First, slide the coolant pump -3- onto the connecting piece and then onto the centering pins in the cylinder block.

Using a mirror, check if the coolant pump is seated correctly on the centering pins.

Tighten the bolts in sequence -1 through 5-.

Note. If a new coolant pump was installed, then the protective cap -arrow- must be removed.

The rest of the installation follows the reverse of the removal procedure.

COOLANT PUMP TOOTHED BELT

Special tools and workshop equipment required

1. Insert Tool 12 mm -T10360
2. Torque Wrench (5-50 Nm) -V.A.G 1331

Removing

Remove the small coolant pipe. Refer to SMALL COOLANT PIPE .

Lay aside the coolant hose -2- and electrical wiring harness -1-.

Scheme 28

Remove the bolt -arrow- and remove the bracket.

Remove the after-run coolant pump bracket bolt -2-.

Remove the coolant hoses -1 and 2- and lay them aside.

Remove the intake manifold runner control valve -N316- -2- and lay it to the side.

Scheme 29

Free up the wiring harness, pull it upward and secure it with cable ties.

Remove the bolts -arrows- and remove the toothed belt guard.

Scheme 30

Loosen the bolt -1- for the coolant pump drive gear clockwise using the torque wrench (5-50 Nm) -V.A.G 1331- and insert tool 12 mm -T10360-. Counter hold the vibration damper using a 24 mm socket when doing this.

Scheme 31

Remove the bolt. Remove the drive gear -1- and toothed belt -2-.

Installing

Install in reverse order of removal. Note the following

Replace the drive gear bolt.

Replace the seals and O-rings.

Drive gear installed position: The collar on the drive gear faces the transmission.

Tightening specifications, refer to COOLANT PUMP AND THERMOSTAT OVERVIEW .

COOLANT PUMP DRIVESHAFT SEAL

Special tools and workshop equipment required

1. Thrust Piece -T10353

Procedure

Remove the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT .

Firmly press a screwdriver -1- into the seal surface -2- -arrow B-.

Scheme 32

Pry out the seal -arrow A-.

Clean the running and sealing surface.

Lubricate the sealing surface of the balance shaft -2- with transmission fluid.

Scheme 33

Push the seal -1- onto the balance shaft.

1. "Luftseite" ("Outside") -arrow- must be readable from the outside.

Mount the thrust piece -T10353- on the seal -1- and press it into the cylinder block until seated using the bolt -2-; when doing this, do not bend the seal.

Scheme 34

Install the coolant pump toothed belt. Refer to COOLANT PUMP TOOTHED BELT .

The rest of the installation follows the reverse of the removal procedure.

COOLANT THERMOSTAT

Special tools and workshop equipment required

1. Hex Ball Socket -T10058

Removing

Drain the coolant. Refer to DRAINING AND FILLING .

Remove the cover for the air guide, disengage the side clips -arrows- to do so.

Scheme 35

Unclip the lower air guide, disengage the clips -arrows- to do so.

Scheme 36

Remove both the lower air guide and the air guide hose.

Vehicles with a Noise Generator

Continuation for all Vehicles

Scheme 37

Loosen the hose clamp -2-.

Remove the bolt -4-.

Disconnect the electrical connector -arrow-.

Remove the bolt -1- and remove the charge air pipe downward.

Lay aside the coolant hose -2- and electrical wiring harness -1-.

Remove the bolt -arrow- and remove the bracket.

Remove the after-run coolant pump bracket bolt -2-.

Note. The after-run coolant pump -V51- stays in the installed position.

Remove the coolant hoses -1 and 2- and lay them aside.

Loosen the nut -2-, remove the bolt -1- and move the support for the intake manifold to the right.

Scheme 38

Remove the oil separator. Refer to OIL SEPARATOR .

Remove the bolts -arrows- and remove the connecting piece. For the right bolt, the hex ball socket -T10058- is useful.

Scheme 39

Remove the coolant thermostat.

Installing

1. Tightening specifications, refer to «COOLANT PUMP AND THERMOSTAT OVERVIEW»(ref-475530-S27264599712012052300000) .

Install in reverse order of removal. Note the following

Note. Replace the seals and O-rings.

Clean the O-ring sealing surface.

Lubricate the O-ring with coolant additive.

Install the thermostat -4- into the coolant pump housing -5- and move it slightly forward -arrow-.

Scheme 40

Carefully install the connecting piece -3- ; while doing so, insert the centering pin -2- into the guide -1-.

Engine Coolant Temperature Sensor -G62

Requirements

1. The engine is cold.

Removing

Remove the cover for the air guide; disengage the side clips -arrows- to do so.

Unclip the lower air guide, disengage the clips -arrows- to do so.

Remove both the lower air guide and the air guide hose.

Vehicles with a Noise Generator

Continuation for all Vehicles

Loosen the hose clamp -2-.

Remove the bolt -4-.

Disconnect the electrical connector -arrow-.

Remove the noise insulation. Refer to Description and Operation .

Loosen the clamps -items 1 and 2-, remove the charge air hose and seal the charge air cooler with a clean cloth.

Remove the bolt -1- and remove the charge air pipe downward.

Disconnect the electrical connector -1- from the throttle valve control module -J338-.

Remove the bolts -arrows- and remove the throttle valve control module.

Remove the intake manifold support; to do so, remove the nut -2- and bolt -1-.

Scheme 41

Disconnect the electrical connector -1- from the ECT sensor.

Remove the clip, to do so, press the latches -arrow-.

Remove the ECT sensor.

Note. Install the new ECT sensor with an O-ring as quickly as possible to prevent coolant from leaking out.

Scheme 42

Disconnect the electrical connector -2- from the ECT sensor.

Remove the bolts -arrows- and remove the retaining plate -1-.

Remove the ECT sensor.

Note. Install the new ECT sensor with an O-ring as quickly as possible to prevent coolant from leaking out.

Installing

Install in reverse order of removal. Note the following

1. Replace the O-ring.
2. Check the coolant level.

FRONT COOLANT PIPES

Special tools and workshop equipment required

1. Hose Clip Pliers -VAS 6362
2. Drip Tray for -VAS 6100- -VAS 6208

Removing

Open the coolant expansion tank cap.

Remove the cover for the air guide, disengage the side clips -arrows- to do so.

Unclip the lower air guide, disengage the clips -arrows- to do so.

Remove both the lower air guide and the air guide hose.

Vehicles with a Noise Generator

Scheme 43

Open the latch -1-, unclip the fuel lines -2- and loosen the bolts -3-. Remove the charge air pipe.

Vehicles with a Evaporative Emission (EVAP) Canister in the Engine Compartment

Disconnect the vent line -1-, unlock the canister -A- and remove it -B-. Move the canister to the side.

Scheme 44

Continuation for all Vehicles

Loosen the hose clamp -2-.

Remove the bolt -4-.

Disconnect the electrical connectors -arrow- and free up the electrical wire.

Remove the noise insulation. Refer to Description and Operation .

Loosen the clamps -items 1 and 2-, remove the charge air hose and seal the charge air cooler with a clean cloth.

Remove the bolt -1- and remove the charge air pipe downward.

Place the drip tray for -VAS 6100- -VAS 6208- under the engine.

Remove the coolant hoses from the after-run coolant pump -V51- -arrows-.

Remove the bolts -1 and 2- and remove the front coolant pipes from the coolant hoses -arrows-.

Scheme 45

Installing

1. Tightening specifications, refer to «COOLANT PIPES OVERVIEW»(ref-475530-S17013119642012052300000) .

Installation is performed in the reverse order of removal, noting the following

Note. Always replace gaskets and seals. Secure all hose connections with hose clamps appropriate for the model.

Install the charge air pipe.

SMALL COOLANT PIPE

Special tools and workshop equipment required

1. Hose Clip Pliers -VAS 6362

Removing

Drain the coolant. Refer to DRAINING AND FILLING .

Remove the air filter housing. Refer to AIR FILTER HOUSING .

Vehicles with a Noise Generator

Continuation for all Vehicles

Loosen the hose clamp -2-.

Remove the bolt -4-.

Disconnect the electrical connector -arrow-.

Remove the bolt -1- and remove the charge air pipe downward.

Remove the bolts -arrows- and remove the electrical connectors -1 through 3- from the bracket.

Scheme 46

Free up the wiring harness on the small coolant pipe -arrow-.

Scheme 47

Remove the bolts -2 and 3-.

Disconnect the small coolant pipe from the coolant pump and from the coolant hoses -1 and 4-.

Installing

1. Tightening specifications, refer to «COOLANT PIPES OVERVIEW»(ref-475530-S17013119642012052300000) .

Installation is performed in the reverse order of removal, noting the following

Note. Secure all hose connections with hose clamps appropriate for the model.

Install the charge air pipe.

After-Run Coolant Pump -V51

Special tools and workshop equipment required

1. Hose Clamps up to 25 mm Dia. -3094
2. Hose Clip Pliers -VAS 6362

Removing

Open the coolant expansion tank cap.

Remove the noise insulation. Refer to Description and Operation .

Disconnect the electrical connector -1- from the after-run coolant pump.

Place the drip tray for -VAS 6100- -VAS 6208- under the engine.

Clamp off the hoses using the hose clamps up to 25 mm dia. -3094- and disconnect the hoses -arrows-.

Remove the coolant hoses from the after-run coolant pump.

Remove the bolt -2- and the after-run coolant pump.

Installing

1. Tightening specifications, refer to «After-Run Coolant Pump -V51- Overview»(ref-475530-S42916493282012052300000) .

Install in reverse order of removal. Note the following

Check the coolant level.

FAN SHROUD

Removing

Remove the cover for the air duct, disengage the side clips -arrows- to do so.

Unclip the lower air duct, disengage the clips -arrows- to do so.

Remove the bolts -1- from the top.

Scheme 48

Note. The left bolt is under the coolant connector.

Remove the noise insulation. Refer to Description and Operation .

Tiguan

Scheme 49

Remove the bracket -1- by removing the bolts -arrows-.

Continuation for all Vehicles

Disconnect the connector -2-.

Remove the bolts -3- and remove the fan shroud downward.

Installing

Install in reverse order of removal. Note the following

1. Install the fan shroud from below.
2. Tightening specifications, refer to «RADIATOR, FAN SHROUD AND FANS OVERVIEW»(ref-475530-S37272189102012052300000) .

COOLANT FAN AND COOLANT FAN 2

Removing

Remove the fan shroud. Refer to FAN SHROUD .

Disconnect the connector -1-.

Scheme 50

Free up the electrical wires.

Remove the nuts -arrows- and remove the coolant fan(s).

Installing

Installation is performed in reverse order.

1. Tightening specifications, refer to «RADIATOR, FAN SHROUD AND FANS OVERVIEW»(ref-475530-S37272189102012052300000) .

RADIATOR

Removing

Drain the coolant. Refer to DRAINING AND FILLING .

Remove the fan shroud. Refer to FAN SHROUD .

Remove the upper coolant hose -arrow- from the radiator.

Scheme 51

Detach the air duct bolts -arrows- from the lock carrier and remove the air duct.

Scheme 52

Remove the bolts -1 and 2- and remove the radiator upward.

Scheme 53

Installing

Installation is performed in reverse order.

1. Tightening specifications, refer to «RADIATOR, FAN SHROUD AND FANS OVERVIEW»(ref-475530-S37272189102012052300000) .