8-1
Become familiar with the manual and select
breakers suitable to machine specifications.
Make careful selection in consideration of oil
quantity, pressure and striking force, to enable
satisfied performance.
When apply a breaker to the machine, consult
your local dealer of Hyundai for further
explanation.
1. SELECTING HYDRAULIC BREAKER
HYDRAULIC BREAKER AND QUICK CLAMP
1)
2)
3)
2. CIRCUIT CONFIGURATION
As for breaker oil pressure line, use extra spool of
main control valve.
Set proper breaker pressure on load relief valve.
The pressure of the R1
3
0 system is
330kgf/cm
2
(4700psi).
The accumulator should be used to the breaker charging and return line.
If the accumulator is not used, it will be damage as the input wave is delivered.
Keep the pressure pulsation of pump below 60kgf/cm
2
(853psi) by installing the accumulator.
Do not connect the breaker return line to the main control, but connect to the return line front of the
cooler.
Do not connect the breaker return line to drain lines, such as of swing motor, travel motor or pump,
otherwise they should be damaged.
One of spool of the main control valve should be connected to the tank.
Select the size of pipe laying considering the back pressure.
Seamless tube should be used for the piping. The hose and seal should be used Hyundai genuine
parts.
Weld the bracket for pipe clamp to prevent damage caused by vibration.
1)
2)
3)
10)
4)
5)
6)
7)
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