Cylinder Head Specialist









No. of Questions= 10 




















     1. 

An aluminum cylinder head is to be removed from an engine.  Machinist A says that the head bolts should be loosened in a sequence starting at the center of the cylinder head and working toward the ends of the cylinder head.  Machinist B says that the engine should be at room temperature before the cylinder head is removed.  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 all pushrods should be kept and arranged so that they can be replaced in their original locations when the engine is reassembled.  Machinist B says that a rocker arm should be kept with the pushrod that it contacted.  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 putty knife can be used to clean the gasket surface of cast-iron or aluminum cylinder heads.  Machinist B says that a steel wire brush can be used to clean cast-iron and aluminum cylinder heads.  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. 

Machinist A says that some chemicals can turn an aluminum cylinder head black.  Machinist 
B says that an aqueous-based chemical cleaning method can be used to clean both cast-iron 
and aluminum cylinder heads.  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. 

Machinist A says that thermal cleaning in a pyrolytic oven is best suited for cast-iron cylinder 
heads.  Machinist B says that shot blasting or tumbling may also be necessary after a cylinder head is cleaned in an oven.  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 magnetic flux testing can be used to check for cracks in aluminum and 
cast-iron cylinder heads.  Machinist B says that dye penetrant testing can be used to check for cracks in aluminum and cast-iron cylinder heads.  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 fluorescent penetrant testing can be used to check for cracks in 
aluminum and cast-iron cylinder heads.  Machinist B says that pressure testing can be used to check for cracks in aluminum and cast-iron cylinder heads.  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. 

Cracks in cylinder heads can be repaired by ________.
        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Stop drilling
        
    



    

    

    
    
        b)
        
    Welding
        
    



    

    

    
    
        c)
        
    Plugging
        
    



    

    

    
    
        d)
        
    All of the above
        
    



    
    

    

    
    







    
    
        

        








     9. 

Before a crack in cast iron is welded, the cylinder head must first be ________.
        
    
        



    

    
















    
    
    

    


    

    

    
    
        a)
        
    Pinned with cast-iron plugs
        
    



    

    

    
    
        b)
        
    Heated
        
    



    

    

    
    
        c)
        
    Brazed
        
    



    

    

    
    
        d)
        
    Machined
        
    



    
    

    

    
    







    
    
        

        








     10. 

Machinist A says that aluminum cylinder heads can be welded to repair a crack.  Machinist 
B says that the valve seat insert should be removed to weld a crack if it is in the combustion 
chamber.  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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