Change The Hydraulic Oil - SANY SY35U Operation And Maintenance Manual

SY35U Excavator OMM

Change the Hydraulic Oil

WARNING!
• Allow the hydraulic system to cool before servicing. Hot 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 any pressure to prevent injury.
Failure to follow these warnings could result in death or serious injury.
NOTICE!
• If the hydraulic oil is contaminated (discolored or containing debris), change the oil
immediately. Find and correct the cause of the contamination before changing the
hydraulic oil.
• Dispose of the hydraulic oil and filters according to all applicable environmental
regulations.
Failure to follow this notice could damage the machine, cause it to operate improperly, or
damage the environment.
NOTE:
• Always use the same type and grade of hydraulic oil.
• Hydraulic oil deteriorates faster on machines equipped with a hydraulic breaker than on machines
equipped with a bucket. See "Hydraulic Breaker Maintenance Interval" on page 5-18 for additional
information.
1. Swing the upper structure 90º clockwise to position the
hydraulic oil drain access panel (1) between the tracks.
2. Prepare the machine for service. See "Maintenance
Safety" on page 2-8.
3. Relieve system pressure. See "Relieve Hydraulic
System Pressure" on page 5-56.
4. Remove the two fasteners (2) securing the hydraulic oil
drain access panel and remove the panel.
SANY
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Fig. 5-66
Operation and Maintenance Manual — 0120
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Maintenance
0003857
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