IHI 15VX - Hydraulic System Diagram

5 – 1
HYDRAULIC SYSTEM DIAGRAM
5-1 HYDRAULIC SYSTEM DIAGRAM
Tank level capacity
19 liters
Total system volume
23 liters
Pump flow rate (Max.):
P1 ; 17.2 liter/min
P2 ; 17.2 liter/min
P3 ; 12.0 liter/min
The service ports use
the flow shared by the
P2 and P3 pumps.
Relief valve set pressure
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 18.1 185
OR1 Overload relief valve (Boom) 24.5 250
OR2 Overload relief valve (Arm) 24.5 250
OR3 Overload relief valve (Bucket) 24.5 250
OR4 Overload relief valve (Blade) 20.6 210
SWR Swing relief valve 15.2 155
RER Remote control relief valve 6.9 70
Boom Swing Swing Travel Right Travel LeftBlade Arm Boom Bucket
OR4
SOL
RER
OR3
OR1
OR2
OR2
OR1
MR2MR3
MR1
SWR
Rotary
Joint
Brake
Valve
Brake
Valve
Brake
Valve
For high speed
travel shift
solenoid valve
Main pump
(variable plunger + gear)
Remote
control pump
To remote
control
valve
Return filter
Oil cooler
Hydraulic tank
Control valve
Suction strainer
Boom Swing
Blade
Service
Arm
Travel (R) Travel (R)
Travel (L)
Boom
Bucket
Swing
Spanner
P1
P2
T1
P3
Engine
Yanmar
3TNV70