Cylinder Head Specialist









No. of Questions= 10 




















     1. 

Machinist A says that damper springs should be removed before checking for spring force.  
Machinist B says that the spring force should be checked at the spring's free height 
dimension.  Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     2. 

Machinist A says that the valve stem should be squared and chamfered before the valve face is ground.  Machinist B says that the stem height determines how much of the valve stem should be ground.  Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     3. 

Machinist A says that a 60-degree stone can be used to widen a 45-degree seat.  Machinist B says that a 30-degree stone can be used to raise a 45-degree seat.  Which machinist is 
correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     4. 

A 45-degree seat has been ground and is too wide.  Machinist A says to grind the seat using a 45-degree stone.  Machinist B says to use both a 30-degree and a 60-degree stone to narrow the seat.  Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     5. 

A valve has been ground and has less than the specified margin.  Machinist A says to grind a 
1-degree interference angle on the valve face.  Machinist B says to compensate by grinding 
the valve seat 1-degree less than specified by the manufacturer.  Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     6. 

Machinist A says that valves should be ground until the margin is at the minimum allowable 
thickness according to the manufacturer's specification.  Machinist B says the thicker the 
margin left on a valve, the better.  Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     7. 

Machinist A says that a valve seat cutter should only be rotated clockwise.  Machinist B says that a 60-degree cutter will raise and narrow a 45-degree valve seat.  Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     8. 

Machinist A says that a damaged or worn integral valve seat can be replaced with an insert 
valve seat.  Machinist B says that a replacement valve seat insert should be welded in place. Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     9. 

Machinist A says that valve stem height is the same as installed height.  Machinist B says 
that installed height can be changed by grinding the tip of the valve stem.  Which machinist 
is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        








     10. 

Machinist A says that the installation of valve stem seals of the O-ring type can be checked 
using a vacuum pump.  Machinist B says that mineral spirits can be used in the combustion 
chamber to determine if the valve stem seals leak.  Which machinist is correct?

        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Machinist A only
        
    



    

    

    
    
        b)
        
    Machinist B only
        
    



    

    

    
    
        c)
        
    Both Machinist A and B
        
    



    

    

    
    
        d)
        
    Neither Machinist A nor B
        
    



    
    

    

    
    







    
    
        

        


















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