Kubota U20-3 Workshop Manual page 404

U20-3, U25-3 WSM
18. Check the inner and outer O-rings of the ring
for scratches and distortion, and apply
hydraulic oil to them before assembling.
19. Check the outer O-ring of the piston for
scratches and distortion, and apply hydraulic
oil to it before assembling.
20. Apply grease to the bearing housing before
assembling, paying attention not to let the
spring drop.
Tightening torque: 34.3 N·m (35 kgf·m)
Apply LOCTITE No. 242.
21. Fit the 2 different O-rings into the O-ring
grooves of the flange mounting.
Insert the drive.
IV-S-89
Hydraulic system (Service section)