After engaging or disengaging shifters, constant pneumatic air pressure is not required in VAS Gearboxes as a separate ball spring assembly is installed in the shifter assembly to LOCK the shifter shafts after shifting. Pneumatic air pressure is only required to shift (engage or disengage) the shifter shafts, after shifting, pneumatic air pressure can be removed.
Both Driveline throughput (vehicle in motion) and PTO Aux. Applications cannot be engaged (operated) at the same time. Either the vehicle shall run on the road (Driveline) or in a stationary position the PTO Auxiliary Outputs can be engaged. This VAS Unique feature eliminates the possibility of an auxiliary application accident while vehicle is in motion. If Both Driveline and PTO Aux. applications are required (to be operated) simultaneously, kindly refer to our Combination Reduction Series.
