AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual A4 1995 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/945/w960_945-0.png AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual

Page 51 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual 15-85
      
-  Install camshafts and camshaft adjuster   Page 
15
-67
 
     
Note:  
     
Wait about 30 minutes after installing the 
camshafts before starting the engine. Hydraulic 
valve compensa

Page 52 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual 15-86
      
Valve guides, checking
 
     
Special tools and equipment  
    
Test sequence  
Universal dial indicator bracket VW 387Dial indicator
    
Note:  
Due to the slight difference in stem d

Page 53 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual 15-87
      
-  Determine lateral play.
     
Wear limit  
     
Intake valve guide  
Exhaust valve guide  
0.80 mm   0.80 mm  
     
Note:  
     
If the wear limit is exceeded, repeat the 
measureme

Page 54 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual 15-88
      
Valve seats, reworking
 
     
Note:  
     If a good seating pattern cannot be obtained by 
grinding the valve seats (lapping), they must be 
refaced (reworked): 
     
Special tools and

Page 55 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual      
If the maximum reworking dimension is 
exceeded, the hydraulic lifters will not work 
properly and the cylinder head will have to be 
replaced. 
Pa
ge 55 of 58 Valve 
gear, servicin
g
11/21/2002

Page 56 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual 15-89
      
Calculating maximum permissible reworking 
dimension  
     
-  Insert valve and press firmly against valve 
seat. 
     
Note:  
     If the valve is to be replaced as part of a repair,

Page 57 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual 15-90
       Measured distance minus minimum dimension = 
max. permissible reworking dimension.  
     
Example (for outer intake valve):  
   Measured distance   31.4 mm  
-   Minimum dimension   -31

Page 58 of 58

AUDI A4 1995 B5 / 1.G AWM Engine Valve Gear Service Repair Manual 15-91
 
    
Rework valve seats  Dim.  
  
Intake valve seat  
Dia. a   mm   26.2  
b   mm   1.5 to 1.8  
Z   Lower edge of cylinder head  
  
45   
Valve seat angle  
  
30   
Upper correction angle
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