AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide A4 1998 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/964/w960_964-0.png AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide

Page 11 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-11
      
Exhaust system, aligning free of stress
 
      Align the exhaust system as follows to avoid 
stresses in the system and prevent the 
transmission of noise into the body:   
     
Notes:

Page 12 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-12
      
Vehicles without clamp between center and 
rear muffler 
     
-  Loosen screws of front clamp between catalytic 
converter and center muffler. 
    
-  Push exhaust system far enough for

Page 13 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-13
      
Vehicles with clamp between front muffler 
and rear muffler  
     
Note:  
     It is only necessary to additionally align the front 
muffler on vehicles with clamp fitted between 
front

Page 14 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-14
 
    
Aligning tailpipes  -  Push rear muffler toward front of vehicle -arrow- so that rear right 
mounting on rear muffler is pre-loaded by a = 9 ... 11 mm. 
-  Tighten bolted connections on r

Page 15 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-15
      
Installation position of double clamp at front  
    
The ends of the bolts must not project below the bottom of the clamp.  
Installation position of double clamp at rear  
    
The ends

Page 16 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-16
      
Exhaust system, checking for leaks
 
     
-  Start engine and run at idling speed.
     
-  Plug tailpipe (e. g. with rag or stopper) and leave 
plugged until check is complete. 
     
-

Page 17 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-17
      
Exhaust manifold, removing and 
installing
 
     
Removing  
     
- Remove engine   Page 10
-1 .
     
- Remove turbocharger   Page 21
-1
     
- Unbolt exhaust manifold.
     
Installi

Page 18 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-18
      
Tightening torques  
     
Bolted mountings      Tightening 
torques  
Exhaust pipe between exhaust 
manifold and turbocharger  25 Nm  
Exhaust pipe with catalytic 
converter to turbochar

Page 19 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-19
      
Exhaust gas temperature sensor, 
checking for function
 
     
Special tools and equipment  
    
Test requirement: 
WARNING! 
VAS 5051 with VAG 5051/1
   orVAG 1551 with VAG 1551/3ACoola

Page 20 of 30

AUDI A4 1998 B5 / 1.G APB Engine Exhaust System Components User Guide 26-20
      
Test sequence  
     
-  Connect VAS 5051 tester or VAG 1551 scan 
tool and select control module for engine 
electronics using "address word" 01. Engine 
must run at idle for this.
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