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G.
19 – Cooling
1
Parts of cooling system
WARNING
Steam may escape when expansion tank is opened. Wear eye
protection and protective clothing to avoid eye injuries and
scalding. Cover cap with cloth and open carefully.
Caution
When doing any repair work, especially in the engine compart‐
ment, pay attention to the following due to the cramped condi‐
tions:
♦ Route all the various lines (e.g. for fuel, hydraulics, acti‐
vated charcoal filter system, coolant, refrigerant, brake
fluid and vacuum) and electrical wiring in their original po‐
sitions.
♦ Ensure that there is sufficient clearance to all moving or
hot components.
Note
♦
When the engine is warm, the cooling system is under pres‐
sure. If necessary, release pressure before beginning repair
work.
♦
Hoses are secured with spring-type clips. In case of repair,
only use spring-type clips.
♦
Spring-type clip pliers - VAS 5024A- are recommended for in‐
stallation of spring-type clips.
♦
When installing coolant hoses, route stress-free so that they
do not come into contact with other components (observe
markings on coolant connection and hose).
Test for leaks in cooling system using cooling system tester -
V.A.G 1274- and adapters -V.A.G 1274/1A- and -V.A.G 1274/7- .
Assembly overview - dismantling and assembling radiator
⇒ page 109
.
Radiator
⇒ page 118
Removing and installing fans
⇒ page 110
.
Parts of cooling system - body side
⇒ page 111
.
Parts of cooling system - engine side
⇒ page 113
.
Thermostat housing
⇒ page 112
Coolant hose schematic diagram
⇒ page 114
.
Draining and filling with coolant
⇒ page 115
.
Coolant mixture ratios
⇒ page 115
, draining and filling with cool‐
ant.
Removing and installing coolant pump
⇒ page 119
.
Phaeton 2003 ➤
6-cylinder injection engine - Edition 02.2014
108
Rep. gr.19 - Cooling