01—418 Facing cylinder head parting surface
  
 

 
 
Data
  
 

 
 
Total height of cylinder head
84.8-85.0
  
 

 
 
Minimum height upon machining
84.0
  
 

 
 
in longitudinal direction          0.08
  
 

 
 
Permissible unevenness of parting surfaces
  
 

 
 
in transverse direction
0.0
  
 

 
 
Permissible deviation in parallel of upper parting surface in relation to lower parting surface in longitudinal direction
0.1
  
 

 
 
Roughness
0.016
  
 

 
 
Test pressure with air under water in bar gauge pressure (atu)
  
 

 
 
Minimum distance "a" with new valves and new valve seats
  
 

 
 
Intake +0.17 to-0.23
om617 - 0081-1.jpg
  
 
Exhaust + 0.12 to -0.28
  
 
Max. distance "a" with new valves and machined valve seats
  
 
Intake
  
 
1.0
  
 

 
 
Exhaust
  
 

 
 
Facing
om617 - 0081-2.jpg
  
 
1    Face parting surface of cylinder head.
2   Refinish valve seats until minimum distance "a" is attained.
3   Check timing (05-215).
  
 

 
 
01.8-418/1 F2