Accumulator (For Ecss) - Komatsu WA250-6 Shop Manual

SEN03830-00

Accumulator (for ECSS)

(if equipped)
62
10-600
1. Valve
2. Top cover
3. Cylinder
4. Free piston
Function
The accumulator is installed to the lift cylinder
q
bottom circuit. The space between cylinder (3)
and free piston (4) is filled with nitrogen gas.
The nitrogen gas absorbs the oil pressure
pulses generated on the lift cylinder bottom
side during travel for higher travel performance
and operating performance by utilizing its com-
pressibility.
Specifications
Gas used
Amount of gas (cc)
Charged pressure
(MPa {kg/cm })
2
Max. pressure used
(MPa {kg/cm })
2
600 Hydraulic system

Accumulator (for ECSS)

1
Nitrogen gas
3,000
2.0 ± 0.1 {20 ± 1}
(at 20°C)
20.6 {210}
WA250, 250PZ-6