Hydraulic Cylinder - Kubota B1220 Workshop Manual

B1220, B1620, B1820, WSM

(3) Hydraulic Cylinder

Control Valve
1. Remove the control valve mounting screws, and remove the
control valve (1).
(When reassembling)
• Take care not to damage the O-rings.
Control valve mounting
Tightening torque
screw
(1) Control Valve
Lift Arm, Hydraulic Arm Shaft and Hydraulic Arm
1. Remove the feedback rod lock nuts and spring.
2. Remove the lift arm, L.H. (1).
3. Remove the hydraulic arm shaft and lift arm, R.H. (3) as a unit.
(When reassembling)
• Align the alignment marks (4) of the hydraulic arm and hydraulic
arm shaft.
• Align the alignment marks (4) of the lift arm, L.H. and hydraulic
arm shaft.
• Apply grease to the right and left bushings and O-rings.
• Take care not to damage the O-rings.
(1) Lift Arm, L.H.
(2) Feedback Rod
Hydraulic Piston
1. Inject the compressed air into the hydraulic cylinder, and take
out the hydraulic piston (1).
(When reassembling)
• Take care not to damage the O-ring (3) and backup ring (2).
• Apply transmission fluid to the O-ring.
• Replace the O-ring if it is defective, worn or scratched, and it
cause the oil leakage.
(1) Hydraulic Piston
(2) Backup Ring
8-S13
HYDRAULIC SYSTEM
24 to 27 N·m
2.4 to 2.8 kgf·m
18 to 20 lbf·ft
9Y1210272HYS0018US0
(3) Lift Arm, R.H.
(4) Alignment Mark
9Y1210272HYS0019US0
(3) O-ring
9Y1210272HYS0020US0
KiSC issued 07, 2011 A
(EU)