How to Dismantle Doosan Excavator Pump

How to dismantle Doosan  DX 60-9C excavator pump

 Disassembly of the plunger pumps and the gear pumps

1. Remove the bolts (M1025L: 2), because the decomposition plunger pump and gear pump have O-ring on the joint surface, please be careful when separating.

· Tool: 8mm (factory —)

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 Figure  30

 2. Remove the coupling spline sleeve.

   

  Figure  31

 Disassemble the plunger pump

1. Remove the inner hexagon bolt (33,34) and separate the pump from the housing

End cover (21).

(M1230:3) (M1255:1)

· Tool: 10mm (factory —)

  

2. When removing the end cover, please separate in the horizontal direction. When the b is difficult to remove, please tap it gently with a plastic hammer.

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 3. Status after the pump end cover is removed.

 

 

 

4. Remove the O-ring (3 0,3 1).

 

 

 

5. Remove the adjustment spring.

 

    6. Remove the spring seat from the pump housing (51).

 

       

7. Remove the plunger plug assembly.

 

 

         

8. Use the hook to remove the slide track plate.

 

 

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9. Remove the clamp spring with the clamp (7).

  

   10. Remove the front cover (8).

 

 

       11. Remove the O-ring.

 

 

      14. Remove the bearing pads (14).

 

 

    15. Remove the bearing.

 

 

       

16. Remove the inclined plate.

 

 

    17. Remove the flow distribution plate.

 

 18. Remove the card spring (28).

 

 

         

19. Remove the filter screen (26).

 

 

 

  

20 Remove the retaining bolt (67) for the flow adjustment valve block (M8 x

25L: 2s)

If the bolt is coated with Loctite before assembly, please do not remove the cover bolt if not necessary.

· Tool: 6mm (factory 1)

 

 

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21. Separate and adjust the valve body. Because the binding surface has an O-ring, please be careful.

 

 22. Remove the flow adjustment valve spool.

 

 

    23. Remove the 3 disc springs and spring seats.

 

  

24. Remove the inner hexagon bolts and separate the cover bolts

(M830L: 2s)

· Tool: 6mm (factory —)

 

   

  26. Remove the overflow valve. Remove the inner hexagon bolts.

Note: Disassemble this part only if required.

· Tool: 24 mm (2e)

 

 

  

27. Remove the adjustment bolts

 Note: Due to the valve core.

 

 

   28. Separation spring.

 

 

    

29. Remove the spool.

 30. Disassembly of the drive shaft

 Remove the clamp spring and the bearing

 

 

 

      31. It may be difficult to remove the bearings and can be struck with a plastic hammer.