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5 – 1
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H
Y
DRAULIC
SYS
TEM DIAGRAM
5-1 HYDRAULIC SYSTEM DIAGRAM
Code
Name
Pressure
MPa
kgf/cm
2
MR1 Main relief valve P1 Pump
20.6
210
MR2 Main relief valve P2 Pump
20.6
210
MR3 Main relief valve P3 Pump
20.6
210
TRB1 Travel pressurization relief valve (P1 Pump)
24.5
250
TRB2 Travel pressurization relief valve (P2 Pump)
24.5
250
OR1 Overload relief valve (Boom)
22.6
230
OR2 Overload relief valve (Arm)
22.6
230
OR3 Overload relief valve (Bucket)
24.5
250
OR4 Overload relief valve (Blade)
24.5
250
SWR Swing relief valve
17.7
180
RER Remote control relief valve
3.4
35
Relief valve set pressure
Tank level capacity
75 liters
Total system volume
110 liters
Pump flow rate (Max.):
P1; 64.6 liter/min
P2; 64.6 liter/min
P3; 46.1 liter/min
The service ports use the
flow shared by the P2 and
P3 pumps.
Содержание 55N3
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