2002-2010 Volkswagen Touareg SUV Cooling -> 1.11 Removing and installing coolant pump and thermostat User Manual
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Cooling -> 1.11 Removing and installing coolant pump and thermostat for Your Volkswagen Touareg SUV First Generation (2002-2010)

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Touareg 2003 ➤  
8-cylinder injection engine - Edition 11.2011  
♦ Torque wrench -V.A.G 1331-  
Removing  
– Drain coolant ⇒ page 86 .  
– Pull out retaining clips from quick-release coupling for coolant  
hose at top and bottom and detach coolant hoses from radia‐  
tor.  
– Remove front bumper ⇒ General body repairs, exterior; Rep.  
gr. 63 ; Assembly overview - front bumper  
– Remove fans with fan support ⇒ page 79 .  
– Loosen securing clips for condenser and ATF cooler.  
– Remove upper securing bolts for radiator and remove radiator  
upwards.  
Installing  
Installation is carried out in the reverse order. When installing,  
note the following:  
– Replenish coolant ⇒ page 86 .  
– Electrical connections and routing ⇒ Current flow diagrams,  
Electrical fault finding and Fitting locations.  
– Install front bumper: ⇒ General body repairs, exterior; Rep.  
gr. 63 ; Assembly overview - front bumper  
– Check headlight adjustment and correct if necessary ⇒ Main‐  
tenance ; Booklet 17.1 .  
1.11  
Removing and installing coolant pump  
and thermostat  
Special tools and workshop equipment required  
♦ Drip tray -V.A.G 1306-  
1. Removing and installing parts of cooling system  
89  
Touareg 2003 ➤  
8-cylinder injection engine - Edition 11.2011  
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♦ Torque wrench -V.A.G 1331-  
Removing  
– Drain coolant ⇒ page 86 .  
– Remove upper coolant hose from thermostat housing.  
– Remove radiator fans with radiator fan support ⇒ page 79 .  
– Remove poly V-belt ⇒ page 18 .  
– Remove toothed belt ⇒ page 34 .  
If thermostat must be renewed:  
– Unscrew securing bolts of thermostat housing -arrows-.  
– First remove seal and then thermostat.  
Installing  
– Insert thermostat with bleeder valve -arrow- facing upwards.  
– Moisten new O-ring with coolant and install it.  
– Install thermostat housing by first screwing in all securing bolts  
by hand and then tightening all bolts to specified torque of 10  
Nm.  
If coolant pump must be renewed:  
90  
Rep. gr.19 - Cooling  
Touareg 2003 ➤  
8-cylinder injection engine - Edition 11.2011  
– Remove toothed belt guard securing nuts -1-.  
– Then unscrew all coolant pump securing bolts -arrows-.  
Installation is carried out in the reverse order. When installing,  
note the following:  
– Insert coolant pump with gasket.  
– Screw in all securing bolts by hand and tighten to specified  
torque. Specified torque: 15 Nm  
– Reinstall toothed belt ⇒ page 34 .  
– Install poly V-belt ⇒ page 18 .  
– Replenish coolant ⇒ page 86 .  
1.12  
Checking cooling system for leaks  
Special tools and workshop equipment required  
♦ Cooling system tester -V.A.G 1274-  
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♦ Adapter for cooling system tester -V.A.G 1274/8-  
♦ Adapter for cooling system tester -V.A.G 1274/9-  
– Screw cooling system tester -V.A.G 1274- with adapter -V.A.G  
1274/8- onto expansion tank.  
– Operate pump on tester and build-up pressure of between 1.4  
and 1.6 bar.  
– Check cooling system tester for leaks.  
– In addition, check sealing cap.  
1. Removing and installing parts of cooling system  
91  

Related Topics

Cooling
1 Removing and installing parts of cooling system 1.1 Assembly overview - radiator 1.2 Assembly overview - radiator fan 1.3 Removing and installing fan support with fan 1.4 Assembly overview - parts of cooling system, engine side, front 1.5 Assembly overview - parts of cooling system, engine side, rear 1.6 Assembly overview - parts of cooling system, body side 1.7 Coolant hose schematic diagram 1.8 Checking water pump -V36- 1.9 Draining and filling coolant 1.10 Removing and installing radiator 1.12 Checking cooling system for leaks

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