3-35
To activate breaker
1.
Set breaker selector switch to "II" (BREAKER) position.
2.
Press lower button on top of right-hand work lever
(joystick) to activate hydraulic breaker.
3.
Release lower button on top of right-hand work lever
(joystick) to deactivate hydraulic breaker.
Relief Valve Adjustment
1.
Cap pipe on arm end, using a cap capable of handling 350
kg/cm
2
under the condition of disconnecting hose to
hydraulic breaker.
2.
Adjust pump pressure using activating the breaker, and
watching the pressure displayed on the instrument panel.
Press the display selector button to show digital pressure
reading. (A separate pressure gauge is not required.)
3.
Adjust the relief valve pressure by turning the adjustment
screw of breaker relief valve. The relief valve is installed on
the left side of the upper structure behind the boom. (Do
not use the overload relief valve on the lower part of control
valve for the breaker relief valve.)
FG000117
O
I
I
I
Figure 79
RIGHT-HAND WORK LEVER
(JOYSTICK)
Figure 80
FG
015792
WARNING
If the relief valve pressure is adjusted while the
hydraulic breaker is connected, there is possibility
that a high-pressure spike or setting could break a
hose or pipe. Personal injury or death could result
from a hydraulic hose or pipe failure.
Summary of Contents for DX700LC
Page 2: ......
Page 72: ...OP001120 Safety 1 66 ...
Page 142: ...OP001121 Operating Controls 2 70 ...
Page 188: ...OP001122 Operation 3 46 ...
Page 197: ...OP001123 4 9 Inspection Maintenance and Adjustment ...
Page 282: ...OP001123 Inspection Maintenance and Adjustment 4 94 ...
Page 298: ...OP000030 Troubleshooting 6 6 ...
Page 301: ...OP001125 7 3 Specification ...
Page 308: ...OP001125 Specification 7 10 ...
Page 314: ...950106 00012E Index 8 6 ...