AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual A4 1998 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/969/w960_969-0.png AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual

Page 91 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-90
      
Valve stem seals, replacing
 
     
Cylinder head installed 
     
-  Remove ribbed belt   Page 13
-1 .
     
-  Remove toothed belt   Page 13
-4 .
     
- Remove camshafts   Page 15
-75

Page 92 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-91
      
Exhaust side  
     
Note:  
     Before attaching the valve assembly appliance, 
remove the two studs in the center of the cylinder 
head and the three upper studs (inlet side) for 
secu

Page 93 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-92
 
    
Inlet side  
Note:  
The inlet valves are installed in the cylinder head at different angles.   -  To prevent damage to the new valve stem seals, place plastic sleeve -
A- on the valve st

Page 94 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-93
 
    
-  Mount spring compressor 3362 on cylinder head with two bolts 
supplied, as in illustration. 
-  Screw pressure hose VW 653/3 with sealing ring finger-tight into spark 
plug thread of r

Page 95 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-94
 
    
Reworking valves  
Valves must not be reworked. Only grinding-in (lapping) is permitted.  
WARNING! 
Note precautions required when disposing of sodium-cooled 
exhaust valves   Page 15
-8

Page 96 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-95
      
Valve guides, checking
 
      When repairing engines or cylinder heads with 
leaking valves, it is not sufficient to reface the 
valve seats and replace the valves. The valve 
guides mus

Page 97 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-96
      
Valve seats, reworking (refacing)
 
     
Notes:  
     
The valve seats should only be reworked just 
enough to produce a good seating pattern. 
     Calculate the maximum permissible re

Page 98 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual distance and minimum dimension. 
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Page 99 of 99

AUDI A4 1998 B5 / 1.G APB Engine Valve Gear Service Owners Manual 15-97
      
Minimum dimensions  
Outer inlet 
valve  Center inlet 
valve  Exhaust 
valve  
32.2 mm   33.2 mm   33.0 mm  
      Measured distance minus minimum dimension = 
maximum permissible reworki
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