FLUID ACTUATED SHIFT BAR HOUSING ASSEMBLY HAVING A CENTERING CYLINDER THEREIN

摘要

A pressurized fluid actuated shift bar housing assembly (12) for a change gear transmission (10) is provided having a plurality of shift bars (54, 56, 58), each shift bar having associated therewith a first (108) and a second (110) selectively pressurized and exhausted chamber utilized to axially position the shift bar in a first and second axially displaced position. A third relatively small volume selectively pressurized chamber (140) is utilized to positively axially position each of the shift bars in the nondisplaced axially centered positions thereof.