AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual A4 1998 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/931/w960_931-0.png AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual

Page 1 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-1
 
     
Cooling system components, 
removing and installing 
     
WARNING! 
     
Hot steam can escape when opening the cap 
on the expansion tank: Cover the cap with a 
cloth and open carefully

Page 2 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual      
Removing and installing viscous fan   Page 13
-21
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Page 3 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-2
 
  
Cooling system diagram
 
1 - 
Radiator 
Removing and installing   Page 19
-26
After replacing, fill with fresh coolant
2 - 
Upper coolant line 
3 - 
Thermostat Removing and installing coolan

Page 4 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-3
 
  
6 - 
Cylinder head/cylinder block 
After replacing, fill with fresh coolant
7 - 
Heating system heat exchanger After replacing, fill with fresh coolant
8 - 
Lower coolant line Removing and i

Page 5 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-4
 
  
Cooling system, draining and filling
 
Special tools and equipment  
 
Adapter 1274/8
 Line VAG 1274/10
 Drip tray VAG 1306
 Hose clamp pliers VAG 1921
 Special tool T10007
Pa
ge 5 of 38 Coo

Page 6 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-5
      
Draining  
     
Note:  
     Catch drained off coolant in a clean container for 
re-use or disposal. 
     
WARNING! 
     
Hot steam can escape when opening the cap 
on the expansion tan

Page 7 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-6
      
Note:  
    
With bumper and air duct in front of charge air cooler removed, the 
coolant can also be drained from the radiator via the drain screw -arrow-. 
If necessary use an auxiliary

Page 8 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-7
      
Filling  
     
Note:  
     
The cooling system is filled all year round with a 
mixture of water and an antifreeze/corrosion 
protection agent. 
     Only use coolant additive G 012 A8 D

Page 9 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual system must be filled all year round with the 
correct anti-freeze and anti-corrosion additive. 
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Page 10 of 38

AUDI A4 1998 B5 / 1.G AWM Engine Cooling System Components Workshop Manual 19-8
      
Because of its high boiling point, the coolant 
improves engine reliability under heavy loads, 
particularly in countries with tropical climates. 
     Protection against frost must be ass
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