Patent ID: 8459398

Claim:
A wheel motor device applicable to a working vehicle including a driving power source, a hydraulic pump main body operatively driven by the driving source and a driving wheel, the wheel motor device comprising a hydraulic motor main body forming an HST in cooperation with the hydraulic pump main body, a motor shaft supporting the hydraulic motor main body in a relatively non-rotatable manner with respect thereto, an output member outputting toward the driving wheel the rotational power that has been operatively transmitted from the motor shaft, and a casing accommodating the hydraulic motor main body and supporting the motor shaft and the output member, wherein the casing includes a hollow-shaped motor case main body with an opening having a size that allows the hydraulic motor main body to pass therethrough, and a motor-side port block detachably coupled to the motor case main body along a direction parallel to the motor shaft so as to close the opening in a liquid-tight manner in a state where the hydraulic motor main body is accommodated within the motor case main body, wherein the motor case main body is integrally provided with a first frame mount boss having a first bolt hole opened in a direction orthogonal to the motor shaft, and wherein the motor-side port block is integrally provided with a second frame mount boss having a second bolt hole opened in the same direction as the first bolt hole.