SY135C Excavator OMM
Maintenance
SANY
Operation and Maintenance Manual — 0120
5-73
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INTRODUCTION
SAFE
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MACHIN
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CONTROLS
MACHINE
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INTENANCE
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EQUI
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Relieve Hydraulic System Pressure
1. Park the machine in a secure location and position the
work equipment with the arm and bucket fully
extended as shown.
2. Shut down the engine.
3. Prepare the machine for service. See “Maintenance
4. Turn the key switch (1) ON.
5. Fully cycle both joysticks (2 and 3) and travel levers/
pedals (4), two to three times within 15 seconds to
release hydraulic pressure remaining in the hydraulic
system.
WARNING!
• Allow the hydraulic system to cool before servicing. Hot hydraulic oil may cause burns or
other serious injury.
• The hydraulic oil tank may be under pressure, and hydraulic oil may be present at the filler
cap. Relieve hydraulic system pressure to prevent injury.
Failure to follow these warnings could result in death or serious injury.
Fig. 5-144
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Fig. 5-145
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2
3
1
4