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
