Principle Of Operation; Operating Principle Of Wheel Motor - Kubota U20-3 Workshop Manual

U20-3, U25-3 WSM Hydraulic system (Mechanism section)
b. Principle of operation

(1) Operating principle of wheel motor

Description of operation
The PHV series travelling motor has a stationary main body composed of a hydraulic motor and hydraulic
valve and a rotating main body composed of a simple planetary gear reducer.
IV-M-40