Ppc Accumulator - Komatsu Galeo PC138US-8 Shop Manual

SEN02550-01

PPC accumulator

For PPC circuit
44
10 Structure, function and maintenance standard
1. Gas plug
2. Shell
3. Poppet
4. Holder
5. Bladder
6. Oil port
Outline
Mounted on the solenoid valve. If the engine is
q
stopped with the work equipment is kept at an
elevated position, the pilot pressure is supplied
to the control valve by the pressure of the com-
pressed nitrogen gas in the accumulator.
Therefore, the spool can be operated to lower
the work equipment by its own weight.
Specifications
Gas to be used: Nitrogen gas
Gas capacity: 300 cc
Sealed gas pressure:
1.18 MPa {12 kg/cm²} (at 80°C)
Maximum operating pressure:
1
6.86 MPa {70 kg/cm²}
PC138US, USLC-8