5-32
MAINTENANCE
SY500H Excavator OMM
0004763
Figure 5-45
9. Remove four fasteners (6) that hold the breather
valve cover to the tank and remove the cover (7).
0005034
Figure 5-46
10. Remove the vent cap (8) from the breather valve.
0000774
Figure 5-47
11. Press the vent button (9) to relieve pressure in the
hydraulic tank.
12. Install the vent cap.
13. Install the breather cover and fasteners.
Collect a Hydraulic Oil Sample
1. Start the engine and operate the machine for all
systems to reach normal operating temperatures.
2. Prepare the machine for service. See “Maintenance
3. Clean the top of the hydraulic tank.
4. See “Relieve Hydraulic System Pressure” on
5. Remove the hydraulic suction strainer cover. See
“Add Hydraulic Oil” on page 5-34.
6. Insert the oil sample tube into the hydraulic oil tank.
7. Collect a sample of hydraulic oil.
8. Remove the oil sample tube.
9. Replace the hydraulic suction strainer cover.
10. Follow the instructions included with the sample kit to
send the sample for testing.
Replace the Case Drain Filter
CAUTION
Hydraulic oil may be hot and under pressure,
which could result in injury. Always wait for the
machine to cool down before attempting to open
the hydraulic oil system.
NOTE:
The case drain filter must be replaced whenever
the hydraulic oil is changed.
1. Prepare the machine for service. See “Maintenance
2. Relieve hydraulic system pressure. See “Relieve
Hydraulic System Pressure” on page 5-31.
3. Open the right rear access door. See “Right Rear
6
7
8
9
Summary of Contents for SY500H
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