8-S21
MX5100, WSM
HYDRAULIC SYSTEM
(3) Position Control Valve
Removing Position Control Valve
1. Loosen and remove the position control valve mounting screws.
2. Take out the position control valve (1).
(When reassembling)
• Take care not to damage the O-rings.
• Measure the distance between the spool edge and spool
joint 2 edge before disassembling.
W1034144
Disassembling Position Control Valve
1. It is possible to disassemble the position control valve as shown
in the figure.
2. Before disassembling the position control valve, measure the
dimensions as shown in “Assembly Position Control Valve”.
• Set screw (2) and spool joint 1 are adjusted to very close
accuracy. Do not disassemble them or cause them to be out
of order unless necessary.
If disassembled due to unavoidable reasons, be sure to
make the following adjustments before assembling.
W1016748
Tightening torque
Position control valve
mounting bolt (M8)
23.6 to 27.4 N·m
2.4 to 2.8 kgf·m
17.4 to 20.2 lbf·ft
(1) Position Control Valve
(2) Bolt
(3) O-ring
(1) Nut 1
(2) Set Screw
(3) Washer
(4) Spring
(5) Spring
(6) Poppet 1
(7) Valve Seat
(8) Unload Poppet
(9) Spring
(10) Unload Plug
(11) Spool
(12) Fulcrum Pin
(13) Plate 1
(14) Nut 2
(15) Sleeve
(16) Backup Ring
(17) Poppet 2
(18) Plug
(19) Spring
(20) Spring Holder
(21) Screw
(22) Poppet 3
(23) Spring
(24) Plate 2
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