Abstract: A hydraulically actuated clutch booster utilizes a seat accumulator incorporated in a vehicle seat suspension circuit for a source of fluid pressure when the normal clutch booster fluid supply pump is not operating thereby providing hydraulic assist to operate the vehicle's clutch upon initial start up.

Abstract: A gear-shift mechanism for a motor vehicle having a change-speed transmission equipped with a speed-range selection device. The mechanism has a multi-speed gear-shift transmission unit and a range-shift transmission unit. The mechanism incorporates a shift control level whose movement can be transferred via a gear-selector passage and via several gear-shift passages to a gear-shaft which is supported in a rotating manner and can be axially moved inside a housing. The shaft loosely supports gear shifting levers which can be engaged on the shaft and locked in position in a non-revolving manner after an axial movement of the gear-shift shaft caused by the respective gear-selecting operations of the shift-control lever.