Abstract: In a track-type vehicle adapted for movement along a longitudinal axis thereof which comprises a track roller frame having a pair of laterally spaced outer and inner rails, a track which moves over said frame and about a sprocket and a final drive within a housing adjacent said sprocket, the improvement of protecting the final drive housing and the sprocket from accumulation of dirt and providing a mounting for the final drive housing. The improvement is accomplished utilizing a structure comprising a guard member secured to a rearward end of said rails to protect and reduce accumulation of dirt on said final drive housing and said sprocket and mounting means for securing said housing to said guard member.

Abstract: A disconnect system for selectively disconnecting a final drive motor means from its associated traction means in an earthmoving vehicle. The system includes a floating splined shaft disposed along the center line of the final drive casing. The casing includes cover plate means with alternate drain positions and means so that the cover plate means is interchangeable and may be used in connection with the final drive casing on either side of the vehicle.