Kubota U20-3 Workshop Manual page 425

U20-3, U25-3 WSM
5. Fit the floating seat combined with the O-ring
to the hydraulic motor.
* If it is difficult to fit it, apply grease to the O-
ring.
6. Combine the main body and the hydraulic
motor and fix them with the snap ring.
1) Degrease the seat surface of the floating
seat.
2) If it is difficult to fit the main body, evenly hit
the periphery of the main body with a resin
hammer to fit it.
3) Fit the snap ring while clamping the
reducer main body flange and hydraulic
motor flange with a squill vise, hydraulic
press, etc.
4) Adjust the bearing preload with the
thickness of the snap ring.
IV-S-110
Hydraulic system (Service section)