Page 1 of 34
19-1
 
     
Cooling system components, 
removing and installing 
     
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. 
     
Note:  
     
Cooling system is under pressure when engine 
is warm. If necessary reduce pressure before 
repair. 
     Secure all hose connections using production-
type clamps   parts catalog. 
     
VAG1921 pliers are recommended for installing 
spring clips. 
     Always replace gaskets, seals and O-rings.
     Arrows on coolant lines and hoses must 
align. 
Pa
ge 1 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 
     
        
        Page 9 of 34
19-8
 
    
For coolant G 012 A8 D, use T40007 refractometer to test frost protection 
in cooling system.  
Recommended mixture ratios:  
Vehicles with small cap Frost protection to  
Anti-freeze amount  
G 012 A8 
D
1)  Water
1)  
-25 C  
(-13 F)  
-35 C  
(-13 F)  
40 %  
  
50 %  3.0 ltr.  
(3.2 qts.)  
3.5 ltr.  
(3.7 qts.)  4.0 ltr.  
(4.2 qts.)  
3.5 ltr.  
(3.7 qts.)  
1) The quantity of coolant: 7.0 liters (7.4 qts.) can vary depending upon 
vehicle options.  
-  Install lower radiator hose and secure.
-  Replace O-ring and install coolant pump drain plug.
   Tightening torque: 30 Nm (22 ft lb)
    
-  Screw VAG1274/1 adapter onto coolant expansion tank.
-  Attach VAG1274/10 special tool to VAG1274/1 adapter.
Pa
ge 9 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 
     
        
        Page 16 of 34
19-14
      
- Drain coolant   Page 19
-4 .
    
-  Loosen clamps for coolant hoses -1- and -2-.
-  Remove coolant hose to radiator at coolant line.
-  Remove intake air duct between intake manifold and charge air cooler.
-  Remove mounting bolts for generator.
-  Remove generator toward front.
-  Disconnect wiring from removed generator.
-  Unbolt following supports and braces from bracket for generator, power 
steering pump and viscous fan: 
 
Intake manifold support
 Support for torque support bracket
 Brace to cylinder block (remove completely)
    
-  Remove bracket for generator, power steering pump and viscous fan 
bolts -1- through -6-. 
-  Secure bracket for generator, power steering pump and viscous fan to 
left side using wire. 
Pa
ge 16 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