AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components

AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components A4 1998 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/970/w960_970-0.png AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components

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AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-3
 
  
Cooling system, components Note: 
 
Always replace gaskets and seals.
 Draining and filling system with coolant   page 19
-6 . 
 Testing cooling system for leaks   page 19
-11
 .
1 - 
Thermo

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AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-4
      
Thermostat, replacing
 
     
-  Remove ribbed belt   page 13
-9 .
     
-  Adjusting tension of toothed belt   page 13
-
13
 . 
    
-  Unbolt thermostat housing and pull out from below t

Page 3 of 12

AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-5
      
Coolant fan control thermal switch, 
checking
 
      The coolant fan control thermal switch -F54- is 
located in the lower left part of the radiator.  
Terminal assignment  
3-pin connect

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AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-6
      
Cooling system, draining and filling
 
     
Note:  
     
The cooling system is filled year round with a 
mixture of water and anti-freeze and anti-
corrosion agent G 011 A8C. 
     G 011

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AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components      
The cooling system is pressurized when the 
engine is warm. Wear gloves and other 
appropriate protection, and slowly and 
carefully release system pressure, if 
necessary, before performing rep

Page 6 of 12

AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-7
      
-  Open the cap on the coolant expansion tank.
    
-  Remove noise insulation panel below engine.
    
-  Drain coolant at radiator. 
-  Remove locking plate for connection flange of cool

Page 7 of 12

AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-8
 
    
Filling  
Recommended mixing ratios:  1) Do not exceed an antifreeze concentration of 60%; antifreeze protection 
and cooling efficiency are reduced if the concentration is higher.  2) The

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AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-9
      
-  Close drain plug at engine block and at bottom 
left of radiator. 
     
-  Push on connection flange of coolant hose at 
bottom of radiator, and install locking element for 
connection

Page 9 of 12

AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components -  Continue running engine at idle until radiator becomes hot at the 
bottom connection. 
Pa
ge 9 of 12 Coolin
g system, com
ponents
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto

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AUDI A4 1998 B5 / 1.G AFC Engine Cooling System Components 19-10
      
WARNING! 
     
The cooling system is pressurized when the 
engine is warm. Wear gloves and other 
appropriate protection, and slowly and 
carefully release system pressure, if 
necessary
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