Advertisement
11. ACCUMULATOR
The accumulator is installed at the pilot oil
supply unit. When the boom is left the raised
position, and the control levers are operated
with the engine stopped the pressure of the
compressed nitrogen gas inside the
accumulator sends pilot pressure to the
control valve to actuate it and allow the boom
and bucket to come down under their own
weight.
Type of gas
Volume of gas
Charging pressure of gas
Max actuating pressure
Nitrogen gas(N
)
2
0.75 (0.2 U.S.gal)
16kg/cm
2
(228psi)
128kg/cm
(1820psi)
2
6-30
1 Diaphragm
2 Steel pressure vessel
3 Closure button
1
2
3
7803AWE56
Advertisement
