How to disassemble Doosan DX520LC and DX480LC Hydraulic Excavator the walking motor
Sectional View
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Seal Kits and Component Groups
NOTE: Observe the following notices when carrying out
repair work at hydraulic aggregates!
1. Close all points of the hydraulic aggregates.
2. Replace all seals.
NOTE: Use only original spare parts
3. Check all sealandsliding surfaces for w ear.
NOTE: Rework of sealing area f. ex. with crocus cloth
can damage surface.
4. Full up hydraulic aggregates with hydraulic oil before start- up.
5. Seal kit for driveshaft.
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6. External seal kit.
7. Housing.
8. Complete rotary group.
9. Port plate with control piston and counter-balance valve.
10. Relief valve / Make up check valve.
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11. Replace seal nut.
NOTE: First measure and record setting height.
12. When tightening, counter hold setting screw, then check setting height.
