Abstract: A method and apparatus for ready replacement of a noncreeper subassembly in a tractor transmission with a creeper subassembly. The method includes subassembly removal and replacement through a window. Removal is by opening the window, reaching in to move, along a subassembly main shaft, a collar which joins the main shaft to a shuttle shaft and in so doing opening a void between the shafts, and then using the void to advantage to manipulate the subassembly out the window. Replacement reverses the same steps. The collar on the creeper subassembly has means for seating a bearing.
November 9, 1987
Date of Patent:
September 5, 1989
J. T. Case Company
David V. Schaefer, Richard J. Honeyager
Abstract: An engine shaft drives oppositely rotating bevel gears which can be coupled to a hollow clutch shaft by forward and reverse clutches. The clutch shaft is coupled to the input shaft of a six-speed, change-speed gearbox through a two-stage epicyclic range gear with a direct drive clutch and brakes for engaging the overdrive and underdrive stages, respectively. An epicyclic creep gear can be selectively switched in upstream of the range gear. Thus, a coupling sleeve couples the clutch shaft either to the input of the range gear or to the input sun wheel of the creep gear. Since the creep gear reverses the sense of rotation, a changeover of control of the clutches is effected when the creep gear is engaged.
Abstract: An agricultural tractor transmission to which various attachments may be removably affixed as necessary. Such attachments include a super reduction device and a pump for actuating a work implement.