Volkswagen Golf Variant / Jetta. Manual - part 402

 

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Volkswagen Golf Variant / Jetta. Manual - part 402

 

 

❑ Removing and instal‐

ling. Refer to

⇒ “1.5 Radiator, Remov‐

ing and Installing”, page

202

 .

❑ Replace all of the cool‐

ant after replacing. Re‐

fer to

⇒ “1.9 Coolant, Draining

and Filling”, page 209

 ,

Coolant, Draining and

Filling

2 - O-Ring

❑ Replace if damaged

3 - Upper Coolant Hose

❑ With a quick-release

coupling

❑ Check for secure fit
❑ Coolant Hose Connec‐

tion Diagram. Refer to

⇒ “1.3 Coolant Hose

Connection Diagram”,

page 197

 .

4 - Cap

❑ Check the pressure

valve in the cap. Refer to

⇒ “1.10 Cooling System,

Checking for Leaks”,

page 212

 , Cooling Sys‐

tem, Checking for Leaks

5 - Connector
6 - Bolt

❑ 3 Nm

7 - Coolant Expansion Tank

❑ Cooling System, Checking for Leaks. Refer to

⇒ “1.10 Cooling System, Checking for Leaks”, page 212

 .

8 - Lower Coolant Hose

❑ With a quick-release coupling
❑ Check for secure fit
❑ Coolant Hose Connection Diagram. Refer to 

⇒ “1.3 Coolant Hose Connection Diagram”, page 197

 .

9 - Nut

❑ 5 Nm

10 - Bolt

❑ 5 Nm

11 - Radiator Fan 2 - V177-
12 - Radiator Fan - V7-
13 - Connector
14 - Air Shroud

❑ Removing and installing. Refer to

⇒ “1.4 Air Shroud with Radiator Fan V7 and Radiator Fan 2 V177 , Removing and Installing”,

page 202

 .

1. Cooling System Components    

191

Cooling System Components, Engine-

Side

⇒ “1.2.1 Overview - Cooling System Components, Intake Side,

without Engine Preheater”, page 192

 .

⇒ “1.2.2 Overview - Cooling System Components, Intake Side,

with Engine Preheater”, page 193

 .

⇒ “1.2.3 Overview - Cooling System Components, Transmission

Side”, page 194

 .

1.2.1

Overview - Cooling System Compo‐

nents, Intake Side, without Engine Pre‐

heater

Refer to 

⇒ “1.3 Coolant Hose Connection Diagram”, page 197

 .

1 - Lower Expansion Tank

Coolant Hose
2 - Upper Expansion Tank

Coolant Hose
3 - Bolt

❑ 10 Nm

4 - Bleed Pipe
5 - Engine Coolant Tempera‐

ture Sensor - G62-
6 - Clip
7 - O-Ring

❑ Replace

8 - Transmission Fluid Cooler

❑ Only on vehicles with

the DSG

®

 transmission

9 - To the Upper Radiator
10 - Engine Oil Cooler Coolant

Supply Hose

❑ On vehicles without a

transmission fluid cooler

Transmission Fluid Cooler Re‐

turn Coolant Hose

❑ On vehicles with a trans‐

mission fluid cooler

11 - Engine Oil Cooler Coolant

Return Hose
12 - Engine Oil Cooler
13 - Thermostat/4/2-Way

Valve with Thermostat

❑ Checking: warm the thermostat in a water bath
❑ Starts to open: approximately 87 °C (188.6 °F)
❑ Stops opening: approximately 102 ℃ (215.6 °F)
❑ Opening lift: minimum 7 mm
❑ Coolant thermostat, removing and installing. Refer to

⇒ “1.7 Coolant Thermostat, Removing and Installing”, page 204

 .

192

⇒ “1.8 4/2-Way Valve with Coolant Thermostat, Removing and Installing”, page 205

 .

14 - Connection
15 - Bolt

❑ 15 Nm

16 - Hose to Lower Radiator
17 - Coolant Pump
18 - Bolt

❑ 15 Nm

1.2.2

Overview - Cooling System Compo‐

nents, Intake Side, with Engine Preheat‐

er

Refer to 

⇒ “1.3 Coolant Hose Connection Diagram”, page 197

 .

1 - Lower Expansion Tank

Coolant Hose
2 - Upper Expansion Tank

Coolant Hose
3 - Bolt

❑ 10 Nm

4 - Bleed Pipe
5 - Engine Coolant Tempera‐

ture Sensor - G62-
6 - Clip
7 - O-Ring

❑ Replace

8 - Transmission Fluid Cooler

❑ Only on vehicles with

the DSG

®

 transmission

9 - Engine Oil Cooler Coolant

Supply Hose

❑ On vehicles without a

transmission fluid cooler

❑ From the connection on

the cylinder block

Transmission Fluid Cooler Re‐

turn Coolant Hose

❑ On vehicles with a trans‐

mission fluid cooler

10 - Engine Oil Cooler Coolant

Return Hose
11 - To the Upper Radiator
12 - Bracket for Wiring Har‐

ness and Coolant Pipe

❑ Secured on the oil filter bracket -item 16- 

⇒ Item 16 (page 179)

13 - Coolant Hose

❑ To the coolant pipe on the cylinder block

1. Cooling System Components    

193

❑ For the transmission fluid cooler
❑ Only on vehicles with the DSG

®

 transmission

15 - Coolant Pipe

❑ For the engine preheater
❑ Overview. Refer to 

⇒ “1.12.1 Overview - Engine Preheater”, page 216

 .

❑ Connection to the engine preheater and the engine oil cooler return line -item 10-

⇒ Item 10 (page 193)

❑ Secured in the upper area on the bracket for the wiring harness and coolant pipe -item 16-

⇒ Item 16 (page 179)

❑ Secured in the lower area on the charge air pipe with the engine preheater bracket

-Item 15- 

⇒ Item 15 (page 291)

16 - Engine Preheater

❑ Overview. Refer to 

⇒ “1.12.1 Overview - Engine Preheater”, page 216

 .

❑ Removing and installing. Refer to 

⇒ “1.12.2 Engine Preheater, Removing and Installing”, page 217

 .

17 - Engine Oil Cooler
18 - Coolant Thermostat

❑ Checking: warm the thermostat in a water bath
❑ Starts to open: approximately 87 °C (188.6 °F)
❑ Stops opening: approximately 102 ℃ (215.6 °F)
❑ Opening lift: minimum 7 mm
❑ Coolant thermostat, removing and installing. Refer to

⇒ “1.7 Coolant Thermostat, Removing and Installing”, page 204

 .

❑ 4/2-Way Valve with Thermostat, Removing and installing. Refer to

⇒ “1.8 4/2-Way Valve with Coolant Thermostat, Removing and Installing”, page 205

 .

19 - Connection
20 - Bolt

❑ 15 Nm

21 - Hose to Lower Radiator
22 - Coolant Pump
23 - Bolt

❑ 15 Nm

1.2.3

Overview - Cooling System Compo‐

nents, Transmission Side

Coolant Hose Connection Diagram. Refer to

⇒ “1.3 Coolant Hose Connection Diagram”, page 197

 .

194

 

 

 

 

 

 

 

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