AUDI A3 1999 8L / 1.G AEB ATW Engines Cooling System Components Owner's Guide

19-27

Installing
Installation is the reverse of removal, noting the
following:

- Fill up with coolant Page 19
-6 .

WARNING!

The cooling system is pressurized when the
engine is warm. When opening the expansion
tank, wear gloves and other appropriate
protection, cover the cap using a cloth, and
open carefully to relieve system pressure
slowly.

Tightening torques

Component
Tightening torques
Condenser to radiator 10 Nm (7 ft lb)
Coolant line to radiator 10 Nm (7 ft lb)
Pa
ge 31 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.19.1

19-28

Cooling system, pressure test


Special tools and equipment

VAG1274 cooling system tester
VAG1274/1 adapter or VAG1274/8 with
VAG1274/9

Test condition:
Engine at operating temperature

WARNING!

The cooling system is pressurized when the
engine is warm. When opening the expansion
tank, wear gloves and other appropriate
protection, cover the cap using a cloth, and
open carefully to relieve system pressure
slowly.

- Open coolant expansion tank cap.

Vehicles with small cap

- Using VAG1274/1 adapter, attach VAG1274 cooling system tester to
coolant expansion tank.
Pa
ge 32 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.19.1

19-29

Vehicles with large cap

All models - Using VAG1274/8 adapter, attach VAG1274 cooling system tester to
coolant expansion tank.
- Use tester hand pump to create approx. 1.0 bar (14.5 psi) pressure.
- If pressure drops, check for leaks and repair.
Pa
ge 33 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.19.1

19-30

Pressure relief valve in cap, checking

Vehicles with small cap

Vehicles with large cap - Using VAG1274/1 adapter (2 parts), attach VAG1274 cooling system
tester to coolant expansion tank cap.
- Pump using hand pump.
Pressure relief valve must open at 1.2-1.5 bar (17.4-21.75 psi).

- Using VAG1274/9 adapter attach VAG1274 cooling system tester to
coolant expansion tank cap.
- Pump using hand pump.
Pressure relief valve must open at 1.4-1.6 bar (20.3-23.2 psi).
Pa
ge 34 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.19.1