Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 689

2

Engine Oil Cooler

⇒ “2.1 Overview - Engine Oil Cooler”, page 192

 .

⇒ “2.2 Engine Oil Cooler, Removing and Installing”, page 192

 .

⇒ “2.3 Mechanical Switch Valve, Removing and Installing”, page

194

 .

2.1

Overview - Engine Oil Cooler

1 - Auxiliary Components

Bracket

❑ Removing and instal‐

ling. Refer to

⇒ “1.5 Auxiliary Compo‐

nents Bracket, Remov‐

ing and Installing”, page

53

 .

2 - Seal

❑ Replace after removing

3 - O-Rings

❑ Replace after removing
❑ Coat with engine oil

4 - Mechanical Switch Valve

❑ Replacing. Refer to

⇒ “2.3 Mechanical

Switch Valve, Remov‐

ing and Installing”, page

194

 .

5 - Engine Oil Cooler

❑ See note. Refer to

⇒ “1 Oil Pan/Oil Pump”,

page 179

 .

❑ Removing and instal‐

ling. Refer to

⇒ “2.2 Engine Oil Cool‐

er, Removing and In‐

stalling”, page 192

 .

6 - Seal

❑ Replace after removing
❑ Coat with coolant

7 - Connection
8 - Bolt

❑ 8 Nm + 45° turn
❑ Replace after removing

2.2

Engine Oil Cooler, Removing and Instal‐

ling

Special tools and workshop equipment required
♦ Shop Crane - Drip Tray - VAS6208-

Caution

This procedure contains mandatory replaceable parts. Refer

to component overview prior to starting procedure.

Mandatory Replacement Parts
♦ Seal - Engine Oil Cooler
Removing

CAUTION

The coolant system is under pressure when the engine is warm.

Risk of scalding due to hot steam and hot coolant.
Possibility of burning or scalding the skin and other parts of the

body.
– Wear safety gloves.
– Wear protective eyewear.
– Reduce the pressure: cover the coolant reservoir cap with a

cloth and carefully open.

– Drain the coolant. Refer to

⇒ “1.3 Coolant, Draining and Filling”, page 217

 .

– Remove the auxiliary components bracket. Refer to

⇒ “1.5 Auxiliary Components Bracket, Removing and Instal‐

ling”, page 53

 .

– Remove the bolts -4 and 5- and remove the engine oil cooler

-3- together with the seal -2-.

Installing
Install in reverse order of removal. Note the following:

Note

♦

Always replace gaskets and seals.

♦

Secure hose connections with standard production clamps.

Refer to the Parts Catalog.

– Install the engine oil cooler -3- with a new seal -2-.
– Install the accessory assembly bracket. Refer to

⇒ “1.5 Auxiliary Components Bracket, Removing and Instal‐

ling”, page 53

 .

– Fill with coolant. Refer to 

⇒ page 218

 .

– Fill with engine oil and then check the level. Refer to ⇒ Main‐

tenance ; Booklet  36.1 ; Procedure Descriptions; Engine Oil,

Draining, Replacing Oil Filter, and Filling .

Tightening Specifications
♦ Refer to 

⇒ “2.1 Overview - Engine Oil Cooler”, page 192

 .

2.3

Mechanical Switch Valve, Removing

and Installing

Removing

Caution

This procedure contains mandatory replaceable parts. Refer

to component overview prior to starting procedure.

Mandatory Replacement Parts
♦ O-rings - Mechanical Switch Valve
– Remove the oil cooler. Refer to

⇒ “2.2 Engine Oil Cooler, Removing and Installing”,

page 192

 .

– Remove the mechanical switch valve -1- from the auxiliary

components bracket in direction of -arrow-.

Installing
Install in reverse order of removal. Note the following:

Note

♦

Always replace gaskets O-rings and seals.

♦

Secure hose connections with standard production clamps.

Refer to the Parts Catalog.

– Coat the mechanical switch valve O-rings with engine oil and

install the switch valve.

– Install the engine oil cooler. Refer to

⇒ “2.2 Engine Oil Cooler, Removing and Installing”,

page 192

 .

3

Crankcase Housing Ventilation

⇒ “3.1 Overview - Crankcase Ventilation”, page 195

 .

⇒ “3.2 Oil Separator, Removing and Installing”, page 196

 .

3.1

Overview - Crankcase Ventilation

1 - Cylinder Head Cover
2 - Seal

❑ Replace after removing

3 - Hose

❑ To EVAP Canister

Purge Regulator Valve

1 - N80-

4 - Oil Separator

❑ Removing and instal‐

ling. Refer to

⇒ “3.2 Oil Separator,

Removing and Instal‐

ling”, page 196

 .

5 - Seal

❑ Replace after removing

6 - Hose

❑ For the crankcase ven‐

tilation

❑ To turbocharger

7 - Bolt

❑ 4 Nm
❑ Self-tapping
❑ Position the bolt by hand

and tighten it until it finds

the old threads. Then

tighten the bolt to the

specification.

8 - Seal

❑ Replace after removing

9 - Bolt

❑ Self-tapping
❑ Position the bolt by hand and tighten it until it finds the old threads. Then tighten the bolt to the specifi‐

cation.

❑ Tightening specification and sequence. Refer to

⇒ Fig. ““Oil Separator - Tightening Sequence”“ , page 196

 .