Using the correct size of circlip pliers fit the circlip onto the lower end of the centre column. Turn the actuator back onto its baseFit Clutch Ring and SpringFirst refit the original yoke ring by placing it on its pivot pin (not applicable to sizes 10,12 and 18),Slide clutch ring down the entre column with drive pins down towards the wormwheel.Place the coil spring and steel pacer with its chamfer uppermost onto the centre column in that order.