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Safety
Safety, Operation and Maintenance Manual - Sep 2012
2-65
SY115C9/135C/155H Crawler Hydraulic Excavator
2.5.14 Pressurized
fl
uid
The hydraulic system is always under pres-
sure. Make sure pressure in hydraulic circuits
has been relieved before checking or replac-
ing the lines. Residual pressure in the circuit
may cause serious accidents.
●
Release system pressure before maintain-
ing the hydraulic system: 1) Remove the
butterfly nut of the vent valve and press
the venting button to release the internal
pressure of the hydraulic tank; 2) Turn the
start switch to ON position within 15 sec-
onds after engine shutdown and place the
hydraulic lockout control to FREE position.
Move the control levers to all directions to
release the pressure in the accumulator.
Open
fi
re is not allowed around the hydrau-
lic system. Remove splashed hydraulic oil
as quickly as possible.
●
Diesel oil or pressurized hydraulic oil can
penetrate skin or eyes, causing serious
injury, blindness or death. It is hard to
fi
nd
the leaking of hydraulic oil with naked eyes.
A cardboard or wooden board is necessary
for checking for leaks. Never touch leaking
liquid with bare hand. Wear face shield or
safety goggles to protect your eyes. If any
liquid penetrates your skin,
fl
ush with clean
water immediately and get medical atten-
tion as soon as possible.
●
The fuel lines are under high pressure
when the engine is running. When check-
ing or servicing the fuel system, shut down
the engine and wait for 30 seconds till in-
ternal pressure drops before operation.
CZ335-1102082
Fig. 2-100
Содержание SY115C9
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Страница 263: ...Maintenance Safety Operation and Maintenance Manual Aug 2012 5 4 SY115C9 135C 155H Crawler Hydraulic Excavator ...
Страница 403: ...Specifications SY115C9 135C 155H Crawler Hydraulic Excavator 7 2 Safety Operation and Maintenance Manual Aug 2012 ...