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
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
❑ 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
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