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MAINTENANCE
5-39
SY155U Excavator OMM
Relieve Hydraulic System Pressure
CAUTION
• 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 pressure to prevent injury.
Failure to follow these warnings could result in
death or serious injury.
00033553
Figure 5-75
1. Park the machine in a secure location and position
the work equipment with the arm and bucket fully
extended.
2. Shut down the engine.
3. Prepare the machine for checks and inspections.
See “Maintenance Safety” on page 2-5.
4. Turn the key switch to ON.
0003556
Figure 5-76
5. Set the hydraulic lockout control lever to the
unlocked (open) position (1).
NOTE:
See “Hydraulic Lockout Control Lever” on
page 3-6 for additional information.
6. Fully cycle each joystick, and travel control
lever/pedals two to three times within 15 seconds to
release hydraulic pressure remaining in the hydraulic
system.
0003555
Figure 5-77
7. Turn the key switch to OFF.
8. Move hydraulic lockout control lever (2) to the locked
(closed) position.
0003557
Figure 5-78
9. Remove the vent cap (3) from the breather valve.
0003558
Figure 5-79
10. Press the vent button (4) to relieve pressure in the
hydraulic tank.
11. Install the vent cap.
1
2
3
4
Содержание SY155U
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Страница 33: ...MACHINE CONTROLS 3 3 SY155U Excavator OMM Machine Configuration Screen 3 36 Tool Select Screen 3 37 ...
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Страница 114: ...5 4 MAINTENANCE SY155U Excavator OMM Check the Operation and Maintenance Manual 5 66 ...
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Страница 178: ...6 2 SPECIFICATIONS SY155U Excavator OMM Machine Dimensions 0003676 Figure 6 1 5 11 1 2 3 4 6 10 8 7 9 ...
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