HYDRAULIC SYSTEM
B2050, B2350, B2650, B3150, WSM
8-M3
[3] HST MODEL
Operating Pressure
9Y1210982HYM0003US0
(1) Oil Filter
(2) Hydraulic Pump (For 3-point
Hitch)
(3) Hydraulic Pump (For Power
Steering and Bi-speed Turn)
(4) Power Steering
(5) Relief Valve (Power Steering
Controller)
(6) Oil Cooler
(7) Regulating Valve (Bi-speed
Turn and Independent PTO
Clutch)
(8) Control Valve for Independent
PTO
(9) Independent PTO Clutch
(10) Bi-speed Turn Valve and
Clutch
(11) Relief Valve for Oil Filter
(12) Oil Filter
(13) HST
(14) Check and High Pressure
Relief Valve
(15) Charge Relief Valve
(16) Front Loader Control Valve
(17) Relief Valve (For 3-point Hitch
System and Front Loader
System)
(18) Boom Cylinder
(19) Bucket Cylinder
(20) Rear Hydraulic Outlet
(21) Position Control Valve
(22) Lowering Speed Adjusting
Valve
(23) Hydraulic Cylinder
(2)
Hydraulic Pump (For 3-point Hitch)
Above 18.7 L/min. (4.94 U.S. gals/min., 4.11 Imp. gals/min.)
(14)
Check and High Pressure Relief Valve (For HST)
33 to 35 MPa (340 to 350 kgf/cm
2
, 4800 to 5000 psi)
(3)
Hydraulic Pump (For Power Steering)
Above 14.1 L/min. (3.72 U.S. gals/min., 3.10 Imp. gals/min.)
(15)
Charge Relief Valve (For HST)
0.4 to 0.6 MPa (4.1 to 6.1 kgf/cm
2
, 17.4 to 20.2 psi)
(5)
Relief Valve (For Power Steering Controller)
11.5 to 12.5 MPa (118 to 127 kgf/cm
2
, 1670 to 1810 psi)
(17)
Relief Valve (3-point Hitch System and Front Loader System)
16.5 to 16.9 MPa (169 to 172 kgf/cm
2
, 2400 to 2450 psi)
(7)
Regulating Valve (For Bi-speed Turn and Independent PTO)
1.1 to 1.5 MPa (11.2 to 15.3 kgf/cm
2
, 160 to 218 psi)
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