Maintenance
SY50U Excavator OMM
5-58
Operation and Maintenance Manual — 0120
SANY
Change the Final Drive Oil
1. Park the machine to position the drain plug (3) at the
bottom of the final drive.
2. Prepare the machine for service. See “Maintenance
3. Wait 10 minutes for the gear oil to cool.
4. Collect final drive oil sample. See “Collect Final Drive
5. Place a suitable container under the final drive.
6. Slowly loosen and remove the oil level plug (2) and fill
(1) plug to relieve any internal pressure.
NOTE:
See “Fluid Capacities” on page
5-12 for final drive capacity.
7. Remove the drain plug and allow the oil to drain.
8. Install the drain plug and tighten to 12.5 lb-ft (17 N•m).
9. Add new gear oil through the fill plug opening. Fill until the gear oil is at the lower edge of the level plug
opening.
10. Install the oil level plug and fill plug. Tighten to 12.5 lb-ft (17 N•m).
11. Repeat this procedure on the other final drive.
CAUTION!
• Allow the final drive to cool before servicing. Hot oil may cause burns or other serious
injuries.
• The final drive gear case may be under pressure. Remove the plugs slowly to prevent injury.
Failure to follow these precautions could result in injury.
NOTICE!
Dispose of used oil in accordance with all applicable environmental regulations. Failure to do
so could result in damage to the environment.
Fig. 5-52
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3
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