Operation and maintenance manual

DX140R/DX140LCRSafety
1-52
Action When Abnormality Is Found During
Inspection
If any abnormality is found during inspection, always carry out
repairs. In particular, if the machine is used when there are still
problems with the brake or work equipment systems, it may lead
to serious injury.
If necessary depending on the type of failure, please contact
your
DOOSAN distributor for repairs.
Precautions with High-pressure Lines,
Tubes and Hoses
When inspecting or replacing high-pressure piping or hoses,
check to verify that pressure has been released from the circuit.
Failure to release the pressure may lead to serious injury.
Always do the following:
• Wear protective glasses and leather gloves.
• Fluid leaks from hydraulic hoses or pressurized
compo
nents can be difficult to see but pressurized oil has
enough force to pierce the skin and cause serious injury.
Always use a piece of wood or cardboard to check for
suspected hydraulic leaks. Never use your hands or
expose your fingers.
• Do not bend high-pressure lines. Do not strike
high
-p
ressure lines. Do not install lines, tubes or hoses that
are bent or damaged.
• Make sure that all clamps, guards and heat shields are
in
st
alled correctly to prevent vibration, rubbing against
other parts, and excessive heat during operation.
– If any of the following conditions are found, replace
th
e pa
rt:
– Damage or leakage from hose end.
– Wear, damage, cutting of covering, or exposure of
streng
thening wire layer.
– Cover portion is swollen in places.
– There is twisting or crushing at movable parts of
hose.
–
Foreign material is embedded in the covering.
– Hose end is deformed.
NOTE: Re
fe
r to "Hose In-service Lifetime Limit (European
Standard ISO 8331 and EN982 CEN)" on page 4-64,
for additional European regulations.
X
X
HDO1045I
Figure 47