Maintenance
SY26U Excavator OMM
5-32
Operation and Maintenance Manual — 1119
SANY
Hydraulic System
Check the Accumulator Function
1. Lower the work equipment to 18 in.–24 in. (0.45 m–0.6 m) from the ground.
2. Shut down the engine.
3. Turn the key switch ON.
4. Move the hydraulic lockout control lever to the locked (closed) position.
5. Fully cycle each pedal, joystick, and travel control lever two to three times within 15 seconds in order to
release any pressure remaining in the hydraulic lines.
NOTE:
If there is no movement, contact a SANY dealer.
Relieve Hydraulic System Pressure
Relieve pressure before disconnecting or servicing hydraulic system components.
1. Prepare the machine for service. See “Maintenance
2. Turn the key switch to ON. Do not start the engine.
3. Move the hydraulic lockout control lever to the
unlocked (open) position.
4. Move all control levers to full stroke in all directions to
release internal pressure.
5. Turn the key switch to OFF.
6. Move the hydraulic lockout control lever to the locked
(closed) position.
7. Open the right access door.
8. Remove the wing nut cover (1) and press the relief valve button (2) to release pressure in the hydraulic tank.
Check the Hydraulic Oil Level
See “Hydraulic Oil Level Check” on page 4-10.
Fig. 5-20
0003126
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1