Mitsubishi 4DQ3 User manual

SERVICE MANUAL

三菱ディーゼルエンジン

MITSUBISHI

DIESEL ENGINE

4DQ3, 4DQ30

MITSUBISHI HEAVY INDUSTRIES, LTD.

No. 5-1, Marunouchi, 2-chom Chiyoda-ku, Tokyo Japan

Phon : Tokyo (03) 212-3111 T l x: J22282, J22443 HISHIJU

SERVICE MANUAL

99609-50000

DEC 1985

Mitsubishi 4DQ3 and 4DQ30

Notes:

Valve Lash ( cold ) 0.25MM or .010"

Head Bolt Torque 87 Ft Lbs

Main Bolt Torque 62 Ft Lbs

Rod Bolt Torque 40 Ft Lbs

Part Number for complete gasket and seal set 3049451031 30494-51031

MAJOR DATA AND SPECIFICATIONS

 

 



 

  X 

  

 

 2  

 

 

 

 

  

  



  



 

INSPECTION AND REPAIR

Cylinder head

 

        

    

        

   



         



 

  

  

  



 











 











Vve id and valve sea ts

 





    

      

        

          

       

      

     



 

 .'

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�: 1 .

:�



 

        

     

        



Item  























   

 limit

 °

  13

   



   

 



  1.2



















± 











 





























� n

 

e



! n 

V  i

  



 

 

  









 

      

     

        



     

      

        

      













 









(NOTE]











       



 

  



  

 

 1.5°, 



  

  





  



        









Cylinders

   

     





 



 

   

 

 



 0

+0.035

 

 





 





Crankcase sket 



 

t



1 "/



. "







stons and piston rings

(1) 

  

        

      





 







  

  



 

 

  

   



 



(3) 

 

 



        

     

 





       







(4) 

        

        













 





 



 

  

 

      

      

    





 

  



   

  

   

  

This manual suits for next models

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