Volkswagen Touareg (2003 year). Manual - part 21

Assembly overview - parts of cooling system, engine side, front

1 - Thermostat housing
2 - Coolant pump

❑ Check for ease of move‐

ment.

❑ Removing and installing

⇒ page 89

3 - Upper coolant hose
4 - To radiator
5 - Lower coolant hose
6 - Radiator outlet coolant tem‐

perature sender -G83-

❑ Before removing, re‐

lease pressure in cool‐

ing system if necessary.

7 - Retaining clip

❑ Check for secure seat‐

ing.

8 - O-ring

❑ Renew if damaged.

9 - To bottom of radiator
10 - Connection

❑ Secured to radiator with

quick-release coupling.

❑ Check for secure seat‐

ing.

11 - Coolant pump -V36-

❑ Checking 

⇒ page 85

 .

❑ Fitting location of pump:

bolted to longitudinal

member on right.

12 - Bracket
13 - 23 Nm
14 - Non-return valve

❑ Note installation position.
❑ Arrow points towards engine.

15 - Coolant hose
16 - Coolant pipe
17 - Coolant pipe
18 - Coolant pipe, on side
19 - 10 Nm

1.5

Assembly overview - parts of cooling

system, engine side, rear

Assembly overview

Touareg 2003 ➤

1. Removing and installing parts of cooling system    

81

❑ Between left and right

cylinder head

❑ With junction to heat ex‐

changer for heating, ex‐

pansion tank and upper

coolant hose.

2 - O-ring

❑ Renew.

3 - Coolant temperature send‐

er -G62-

❑ With coolant tempera‐

ture display sender -

G2- .

❑ For engine control unit.
❑ Before removing, re‐

lease pressure in cool‐

ing system if necessary.

4 - Coolant pipe
5 - To thermostat.
6 - 20 Nm
7 - Gasket
8 - Coolant pipe

❑ From cylinder head

bank 1

9 - Coolant pipe

❑ To oil filter housing

10 - To expansion tank
11 - To expansion tank
12 - Coolant pipe
13 - 10 Nm
14 - To upper coolant hose
15 - 10 Nm
16 - Coolant pipe, on side

❑ On cylinder head bank 1

17 - Coolant hose
18 - From heat exchanger for heater unit
19 - To heat exchanger for heater unit.
20 - Coolant pipe
21 - 10 Nm
22 - Retaining clip

❑ Check for secure seating.

23 - Connection

❑ To expansion tank

24 - 10 Nm

Touareg 2003 ➤

82

Assembly overview - parts of cooling system, body side

1 - Expansion tank

❑ Test cooling system for

leaks using cooling sys‐

tem tester -V.A.G 1274-

and adapter for cooling

system tester -V.A.G

1274/8- .

2 - Cap

❑ Check using cooling

system tester -V.A.G

1274- and adapter for

cooling system tester -

V.A.G 1274/9- .

❑ Test pressure: 1.4…1.6

bar.

3 - Connector

❑ For coolant shortage in‐

dicator

4 - Spring-type clip

❑ Check for secure seat‐

ing.

5 - Coolant hose
6 - To connection
7 - To coolant pipe
8 - Overflow hose
9 - 10 Nm
10 - Coolant pipe
11 - To upper coolant hose
12 - 8 Nm

Touareg 2003 ➤

1. Removing and installing parts of cooling system    

83

Coolant hose schematic diagram

1 - Radiator/cooler
2 - Upper coolant hose
3 - Lower coolant hose
4 - Coolant pump -V36-
5 - Non-return valve

❑ Note installation posi‐

tion.

❑ Arrow points in direction

of flow.

6 - Coolant pipe

❑ Secured to cylinder

head bank 1.

7 - Alternator
8 - Oil cooler

❑ For engine oil.

9 - Expansion tank
10 - Heat exchanger for heater

unit
11 - Coolant pipe

❑ Secured between cylin‐

der head bank 1 and cyl‐

inder head bank 2.

12 - Coolant temperature

sender -G62-
13 - Cylinder bank 2.
14 - Cylinder bank 1.
15 - Coolant pipe

❑ Connected to cylinder

head bank 1.

16 - Coolant pipe

❑ To thermostat housing

17 - Coolant pump
18 - Thermostat housing

Fitting location of water pump -V36-
The water pump -V36- -2- is clipped to the bracket with damping

rings and is bolted to the longitudinal member on right together

with the bracket.

Touareg 2003 ➤

84