Safety
Safety, Operation and Maintenance Manual
2-48
SRT45 Off-Highway Truck
2.4.14 Precautions with high-pressure
oil
The hydraulic system is always under
pressure.Make sure pressure in hydraulic
circuits has been relieved before checking or
replacing the lines. Residual pressure in the
circuit may cause serious accidents.
R e l e a s e s y s t e m p r e s s u r e b e f o r e
maintainingthe hydraulic system:
1) Remove thebutterfly nut of the vent
valve and pressthe venting button to release
the internalpressure of the hydraulic tank;
2) Shut down engine.Rotate steering
wheel to the two directions for several turns
and release steering system pressure. Press
foot valve continuously to release pressure of
brake accumulator.
●
Open fire is not allowed around the
hydraulic 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 find
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, flush with clean water immediately
and get medical attention as soon as
possible.
●
The fuel lines are under high pressure
whe n the engin e i s r unning. Wh en
checking or servicing the fuel system,
shut down the engine and wait for 30
seconds till internal pressure drops before
operation.
Fig. 2.4-12
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