AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owner's Manual

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owner's Manual A4 1997 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/935/w960_935-0.png AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owner's Manual

Page 21 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-21
      
Exhaust manifold, removing and 
installing
 
     
Removing  
     
Note:  
     The flexible connection in the front exhaust pipe 
must not be deflected more than 10 or it may be 
damage

Page 22 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-22
 
    
- Remove bolts -arrows-. 
-  Remove air duct -1- and -2-.
    
-  Disconnect wiring connectors as follows:
1 - on ACF valve (in addition, remove ACF valve from air filter housing)
2 - on

Page 23 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-23
 
    
-  Remove sound insulation -arrows-.
    
-  Loosen bolts -1- and -2- by several turns.
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Page 24 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-24
 
    
-  Remove front hose from line of crankcase vent -2-.
-  Disconnect front hose from line -1- of secondary air inlet.
-  Remove heat shield -3-. 
    
-  Remove bolts -1- and -2- of oil fe

Page 25 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-25
 
    
Installing  
Installation is carried out in the reverse order of removal; note the 
following:  
Note:  
Always replace seals, gaskets and self-locking nuts.  -  Remove all nuts -arrows-

Page 26 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-26
      
Tightening torques  
     
Component  
Nm  
Exhaust manifold to cylinder head   30  
Turbocharger to exhaust manifold  
35 
1)
2)  
Turbocharger bracket to cylinder block     
25  
Turboc

Page 27 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-27
      
Catalytic converter, removing and 
installing
 
     
Removing  
    
-  Remove heat shield -arrows- above right-hand drive shaft. 
-  Loosen bolted connection front exhaust pipe/catalyti

Page 28 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-28
 
    
Note:  
Coolant hoses -1- and -3- do not have to be disconnected.  -  Unbolt coolant expansion tank -2-, -arrows-.
-  Disconnect wire to Engine Coolant level (ECL) Warning switch -F66- 
a

Page 29 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-29
 
    
-  Remove air filter cover -arrow-.
    
- Remove bolts -arrows-. 
-  Remove air duct -1- and -2-.
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Page 30 of 41

AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Owners Manual 26-30
 
    
-  Disconnect wiring connectors as follows:
1 - on ACF valve (in addition, remove ACF valve from air filter housing)
2 - on mass air flow sensor 
3 - on Wastegate Bypass Regulator valve -
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