lock AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual A4 1997 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/987/w960_987-0.png AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual

Page 4 of 40

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-3
 
  
7 - 
O-ring 
Replace if damaged
8 - 
Coolant Fan Control (FC) thermal switch -
F18- 35 Nm (26 ft lb)For electric coolant fan
  Switching temperatures, stage 1:On: 92-97 C (198-207 F)Off: 84-

Page 11 of 40

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-9
 
  
Coolant hose connection diagram
 
1 - 
Lower coolant hose 
From radiator to engine
2 - 
Cylinder head/cylinder block 
3 - 
Intake manifold 
4 - 
Coolant line From heat exchanger to engine bl

Page 13 of 40

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-11
      
Cooling system, draining and refilling
 
     
Draining  
     
WARNING! 
     
The cooling system is pressurized when the 
engine is warm. When opening the expansion 
tank, wear gloves a

Page 24 of 40

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-20
      
Coolant pump, removing and installing
 
     
Notes:  
     
Always replace seals and gaskets.
     Cover the toothed belt with a cloth to protect it 
from coolant before removing the coo

Page 27 of 40

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-22
      
Installing  
      Installation is the reverse of removal, noting the 
following:  
     
-  Remove any remaining sealant from sealing 
surfaces of coolant pump and cylinder block.

Page 28 of 40

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-23
      
Thermostat, removing and installing
 
     
Notes:  
     
Always replace seals and gaskets.
     Cover the toothed belt with a cloth to protect it 
from coolant before removing thermosta

Page 30 of 40

AUDI A4 1997 B5 / 1.G AHA ATQ Engines Cooling System Components Workshop Manual 19-24
      
Installing  
      Installation is the reverse of removal, noting the 
following:  
    
Bleeder valve for thermostat (arrow) must be at the top. 
-  Install thermostat -4- into engine bl