9-S16
BX24, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
BACKHOE
6. CHECKING, DISASSEMBLING AND SERVICING
[1] CONTROL VALVE
(1) Checking and Adjusting
Relief Valve Setting Pressure
• The relief valve of the tractor hydraulic system is used as a
relief valve of the backhoe hydraulic system.
(Reference)
W1019092
(2) Disassembling and Assembling
Disassembling Control Valve
1. Remove the spring and load check valve.
2. Remove the seal plate and wiper ring from valve housing.
3. Remove the cap, seal plate and wiper ring, and draw out the
spool from the valve housing.
(When reassembling)
• Clean all parts with a suitable solvent, and dry with a lint-free
cloth or air.
• Visually inspect all parts for signs of scoring or damage.
• Install the spool and seal plate to the valve housing, taking care
not to damage the O-rings.
W1036061
Relief valve pressure Factory spec.
12.3 to 12.7 MPa
125 to 130 kgf/cm
2
1778 to 1849 psi
(1) Screw
(2) Seal Plate
(3) Wiper Ring
(4) O-ring
(5) Valve Housing
(6) Plug
(7) O-ring
(8) Wiper Ring
(9) Seal Plate
(10) Spring Seat
(11) Return Spring
(12) Spring Seat
(13) Cap Screw
(14) Cap
(15) Screw
(16) Load Check Valve
(17) Spring
(18) Plug
(19) O-ring
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