
169Appliances and Equipment Failures
e le wheel is then connected to the right wheel through appropriate linkages. e output sha
of the gear box, whether for a truck or a passenger vehicle, is connected to a pitman arm that acti-
vates the linkages. e geometrical conguration of the linkages produces unequal steer angles
between the inner and the outer turn wheels. is “Ackerman” geometry is shown in Figure 6.37.
Note from Figure 6.37 that the front track radiuses are greater than the rear track
radiuses. e front outer and the front inner radiuses are also slightly greater than the rear
outer and rear inner radiuses. us, the rear wheels of ...