Fork & Rail Assembly

The fork and rail assembly is the main component for changing from high to low ratio and is driven by the actuator assembly and the lead screw. The actuator rotates the lead screw, via the gearbox, which in turn moves the fork and rail assembly linearly in plain bearings in the front and rear casings. The fork is positively located in a stepped ring on the outer diameter of the synchronizer sleeve. Therefore, linear movement of the fork is transferred to the sleeve which initiates the range change.