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MAINTENANCE
5
Figure 5-136
9. Remove the four fasteners (6) and remove the
hydraulic suction strainer cover (5).
10. Insert the oil sample tube into the hydraulic oil tank.
11. Collect a sample of hydraulic oil.
12. Remove the oil sample tube.
13. Install the hydraulic suction strainer cover.
14. Send the sample for testing in accordance with the
instructions packaged with the oil analysis sample kit.
Collect a Final Drive Oil Sample
1. Obtain an oil analysis sample kit from a SANY dealer.
2. Start the engine and operate the machine for the
system to reach normal operating temperatures.
1
Figure 5-137
3. Park the machine on a flat, level surface, placing the
oil drain plug (2) on the final drive cover at the
bottom.
4. Remove any dirt from around the check plug (1).
6
0003587
2
5. Slowly loosen the check plug to relieve pressure
within the final drive.
6. Remove the check plug.
7. Insert the oil sample tube into the check plug hole.
8. Collect a sample of oil from the final drive.
9. Remove the oil sample tube.
10. Install the check plug.
NOTE: Repeat preceding steps for the other final drive as
needed.
11. Send the sample for testing in accordance with the
instructions packaged with the oil analysis sample kit.
Collect a Swing Drive Oil Sample
1. Obtain an oil analysis sample kit from a SANY dealer.
2. Start the engine and operate the machine for the
system to reach normal operating temperatures.
3. Shut down the machine.
4. Clean around the dipstick (1) to prevent
contamination of the sample.
1
5. Remove the dipstick from the swing drive.
6. Insert the oil sample tube into the dipstick tube.
7. Collect a sample of swing drive oil.
8. Remove the oil sample tube.
9. Install the swing drive dipstick.
0003
10. Send the sample for testing in accordance with the
instructions packaged with the oil analysis sample kit.
5-58
Figure 5-138
SY155U Excavator OMM
0003655
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