Kubota KX080-4 Workshop Manual page 304

KX080-4, WSM
Angle Specification
Adjusting the overload relief valve
CAUTION
• Only adjust the valve if the pressure setting of the overload relief valve is low.
• If the pressure is raised above the setting value, it may cause damage to equipment, so never raise the
pressure above the setting value.
Pressure Change/Turn for Overload Relief Valves (Reference Values)
Amount adjuster screw turned
• Blade rod (b4R)
• Angle bottom (b8L)
• Other
1. Loosen the relief valve lock nut.
2. Use a hexagonal wrench to turn the adjuster screw and then
tighten the lock nut.
3. After setting the pressure, always check the setting according to
the section Measuring the Main Overload Valve Pressure.
(1) Lock Nut
(2) Adjuster Screw
1/4 1/2
4.5 MPa 8.9 MPa
2
45.4 kgf/cm 90.8 kgf/cm
645 psi 1291 psi
7.1 MPa 14.2 MPa
2
72.4 kgf/cm 144.8 kgf/cm
1030 psi 2060 psi
3-S145
HYDRAULIC SYSTEM
(1) Blade rod
(2) Blade bottom
(3) Arm rod
(4) Arm bottom
(5) Bucket rod
(6) Bucket bottom
(7) AUX1. High
(8) AUX1. Low
(9) Boom bottom
(10) Boom rod
(11) Angle rod
(12) Angle bottom
RY9212158HYS0101US0
(a) Pressure Increase
(b) Pressure Decrease
RY9212148HYS0331US0
3/4
13.4 MPa
2 2
136.2 kgf/cm
1936 psi
21.3 MPa
2 2
217.3 kgf/cm
3089 psi
RY9212158HYS0102US0
KiSC issued 08, 2015 A
1
17.8 MPa
2
181.6 kgf/cm
2582 psi
28.4 MPa
2
289.7 kgf/cm
4119 psi