SANY SY500H, Operation And Maintenance Manual

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MAINTENANCE
5-41 SY500H Excavator OMM
6. Check the bottom of the hydraulic oil return filter
housing and remove any debris.
7. Collect a hydraulic oil sample.
NOTE: See “Collect Oil Samples” on page 5-59.
8. Install a new hydraulic oil return filter in the return
hydraulic oil return filter housing.
0000784
Figure 5-76
9. Position the spring (4) on top of the hydraulic oil
return filter (5).
10. Install a new O-ring (6).
0000782
Figure 5-77
11. Install the hydraulic return filter cover (7).
0004763
Figure 5-78
12. Install the cover (8) over the breather valve.
13. Install the decking (9) on top of the hydraulic tank.
14. Start and run the engine at idle speed for 10 minutes
to bleed any air from the hydraulic system.
0004692
Figure 5-79
15. Move the hydraulic lockout control lever (10) to the
unlocked (open) position (11).
16. Check for leaks. If any are located, repair as needed.
17. Check the hydraulic fluid level. See “Add Hydraulic
Oil” on page 5-34.
Clean the Hydraulic Suction Strainer
CAUTION
• 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
1. Prepare the machine for service. See “Maintenance
Safety” on page 2-4.
2. Clean the top of the hydraulic tank of any dust and
debris.
3. Relieve hydraulic system pressure. See “Relieve
Hydraulic System Pressure” on page 5-31.
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