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Maintenance
SY135C Excavator OMM
5-80
Operation and Maintenance Manual — 0120
SANY
7. Remove the filter element (3) from the filter housing.
8. Clean the inside of the filter housing.
NOTE:
Be careful not to cross-thread the filter
housing during installation so the mating
surfaces seal correctly.
9. Install a new filter element inside the filter housing.
10. Install the filter housing.
11. Close the right rear access door.
12. Start and run the engine at low idle for 10 minutes to
vent air from the hydraulic system. See “Starting the
Engine” on page 4-12.
13. Check for leaks.
Replace the Case Drain Filter
NOTE:
The case drain filter must be replaced whenever the hydraulic oil is changed.
1. Prepare the machine for service. See “Maintenance Safety” on page 2-8.
2. Relieve hydraulic system pressure. See “Relieve Hydraulic System Pressure” on page 5-73.
3. Place a suitable container under the case drain filter.
4. See “Change the Hydraulic Oil” on page 5-75 for the steps to drain the hydraulic oil tank.
5. Remove the fasteners that secure the case drain filter cover to the case drain filter housing.
6. Remove the case drain filter cover.
WARNING!
• Allow the hydraulic system to cool before servicing. Hot hydraulic oil may cause burns or
other serious injury.
• The hydraulic tank may be under pressure, and hydraulic oil may be present at the filler
cap. Relieve pressure to prevent injury.
Failure to follow these warnings could result in death or serious injury.
NOTICE!
Make sure the hydraulic oil tank is empty before removing the case drain filter cover.
Fig. 5-154
0004174
3
2
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