How to Solve the Problem of Doosan Excavator Traveling Motor Not Moving



Doosan Excavator DH220LC-V walking motor has no action  

A  Phenomenon:
 1 There is no movement when walking on the right side, but the 1st and 2nd speeds of walking on  
 the    left side are normal;  
 
 
2  Other actions are normal. 
 
3 The idle pressure for right walking is 38 kg, the pressure during movement is about 60 kg, and the pressure for other movements is normal. 
 
 
 

 
 
 B  Inspection essentials: 
 
  1. Check the pilot oil pressure; 
  2. Check whether the main valve core is stuck; 
  3. Whether the rear pump is damaged; 
  4. Is there any abnormality in the traveling straight valve core? 
  5. Check whether the CTS one-way valve is damaged; 
  6. Whether the motor relief valve is damaged; 
  7. Check whether there is any damage inside the motor; 
 
  C  reasons:  
   The central shaft spring snap ring inside the walking motor falls off 
  D Processing method: Replace the spring circlip and reinstall the traveling motor OK