8-M10
MX5100, WSM
HYDRAULIC SYSTEM
■
Lowering Position
When the control lever is moved to DOWN position,
spool (1) moves to arrow-mark direction, and poppet 2
(4) is pushed by set screw (5). As the poppet 2 (4) is
pushed, an oil circuit of C port to T
2
port is formed.
The oil in the hydraulic cylinder is forced out by the
weight of the implement, and returns to the transmission
case through the C port and T
2
port, lowering the
implement. The pressurized oil at the P port pushes
open unload poppet (2) and returns to the transmission
case from T
1
port.
■
Floating
When the control lever is moved all the way to the
bottom, spool (1) and poppet 2 (4) remain in the positions
described for “Lowering Position”. The oil flows freely
between the hydraulic pump, hydraulic cylinder and
transmission case.
W10159250
■
Lifting to Neutral
In returning from Lifting to Neutral, spool (1) is
pushed back to the arrow-mark direction. When the
neutral position comes near, the tapered part (5) of the
spool (1) makes the pressure difference at the P port and
C port. Therefore, the poppet 1 (4) gradually closes, and
absorbs any shock at lifting stop. In that case, since oil
is remained in the A chamber (a) behind the unload
poppet (2), the unload poppet (2) does not open.
However, the poppet 3 (3) opens because of low
pressure in B chamber (b), and then the oil from the
pump returns to the transmission case through T3 port.
W10166580
(1) Spool
(2) Unload Poppet
(3) Poppet 1
(4) Poppet 2
(5) Set Screw
(6) Plate
(7) Position Control Valve Body
C : C (Cylinder) Port (To
Hydraulic Pump)
P : P (Pump) Port
T
1
: T
1
Port
(To Transmission Case)
T
2
: T
2
Port
(To Transmission Case)
T
3
: T
3
Port
(To Transmission Case)
T
4
: T
4
Port
(To Transmission Case)
F : Tractor Front Side
(1) Spool
(2) Unload Poppet
(3) Poppet 3
(4) Poppet 1
(5) Tapered Part
(6) Position Control Valve Body
(a) A Chamber
(b) B Chamber
C : C (Cylinder) Port (To
Hydraulic Pump)
P : P (Pump) Port
T
1
: T
1
Port
(To Transmission Case)
T
2
: T
2
Port
(To Transmission Case)
T
3
: T
3
Port
(To Transmission Case)
F : Tractor Front Side
Summary of Contents for MX5100
Page 2: ......
Page 8: ...6 MX5100 WSM SAFETY INSTRUCTIONS...
Page 9: ...7 MX5100 WSM SAFETY INSTRUCTIONS...
Page 12: ...10 MX5100 WSM DIMENSIONS DIMENSIONS...
Page 13: ...11 MX5100 WSM DIMENSIONS...
Page 14: ...12 MX5100 WSM DIMENSIONS...
Page 15: ...G GENERAL...
Page 16: ......
Page 18: ......
Page 87: ...1 ENGINE...
Page 88: ......
Page 90: ......
Page 92: ......
Page 166: ...1 S74 MX5100 WSM ENGINE...
Page 167: ...2 CLUTCH...
Page 168: ......
Page 170: ......
Page 174: ...2 M4 MX5100 WSM CLUTCH...
Page 176: ......
Page 205: ...3 TRANSMISSION...
Page 206: ......
Page 208: ......
Page 209: ...3 M1 MX5100 WSM TRANSMISSION 1 STRUCTURE 1 2WD...
Page 210: ...3 M2 MX5100 WSM TRANSMISSION 2 4WD...
Page 218: ......
Page 265: ...4 REAR AXLE...
Page 266: ......
Page 267: ...CONTENTS MECHANISM 1 STRUCTURE 4 M1...
Page 268: ......
Page 270: ...4 M2 MX5100 WSM REAR AXLE...
Page 272: ......
Page 278: ...4 S6 MX5100 WSM REAR AXLE...
Page 279: ...5 BRAKES...
Page 280: ......
Page 281: ...CONTENTS MECHANISM 1 STRUCTURE 5 M1...
Page 282: ......
Page 286: ......
Page 296: ...5 S10 MX5100 WSM BRAKES...
Page 297: ...6 FRONT AXLE...
Page 298: ......
Page 300: ......
Page 306: ......
Page 327: ...7 STEERING...
Page 328: ......
Page 330: ......
Page 334: ...7 M4 MX5100 WSM STEERING...
Page 336: ......
Page 355: ...8 HYDRAULIC SYSTEM...
Page 356: ......
Page 358: ......
Page 374: ......
Page 402: ...8 S28 MX5100 WSM HYDRAULIC SYSTEM...
Page 403: ...9 ELECTRICAL SYSTEM...
Page 404: ......
Page 406: ......
Page 407: ...9 M1 MX5100 WSM ELECTRICAL SYSTEM 1 WIRING DIAGRAM...
Page 420: ......
Page 454: ...9 S34 MX5100 WSM ELECTRICAL SYSTEM...