Patent ID: 8790209

Claim:
A final drive, comprising: a motor assembly, including: a hydraulic motor, an output shaft coupled to the hydraulic motor, a housing, including: a supply port, a first passageway fluidly coupled to the supply port, a second passageway fluidly coupled to the first passageway, and a drain port, a thrust bearing coupled to the output shaft and the housing; a brake coupled to the output shaft and the housing, a first chamber, defined by the output shaft, the housing and the bearing, fluidly coupled to the second passageway, a second chamber, defined by the output shaft, the bearing and the brake, fluidly coupled to the bearing and the brake, a third chamber, defined by the brake, the motor and the output shaft, fluidly coupled to the brake and the drain port; a planetary gear train, including: an input shaft coupled to the motor assembly output shaft, and an output shaft; and a drive sprocket coupled to the planetary gear train output shaft.