SANY SY500H Operation And Maintenance Manual page 144

MAINTENANCE
3. Prepare the machine for service. See "Maintenance
Safety" on page 2-4.
4. Relieve hydraulic system pressure. See "Relieve
Hydraulic System Pressure" on page 5-31.
2
Figure 5-57
5. Remove the section strainer cover (2).
6. Obtain a hydraulic oil sample. See "Collect Oil
Samples" on page 5-59.
7. Place the suction strainer cover back over the
opening, but do not secure it in place.
Figure 5-58
8. Remove the bottom cover (3).
9. Place a suitable container with a minimum capacity
of 127 gal. (480 L) under the hydraulic tank drain
plug (4) to collect the drained hydraulic oil.
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10. Clean the area around the hydraulic tank drain plug
of dust and debris.
11. Remove the drain plug and allow the hydraulic tank
to drain completely.
Dispose of drained hydraulic oil in accordance
with all applicable environmental regulations.
Failure to do so could damage the environment.
3
5
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12. Install a new O-ring (5) on the drain plug.
13. Install and securely tighten the hydraulic tank drain
plug.
5-36
4
Figure 5-59
NOTICE!
Figure 5-60
SY500H Excavator OMM
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