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© 200423 1-9 General FRONT AXLE/LEADING REAR AXLE ΧΦ65/75/85 series 7 6 To make certain that the toe-out when turning is correct, the construction of the track rod and the track rod arms should comply with a certain principle: the Ackermann principle. According to the Ackermann principle it should be possible to draw an imaginary line from the centre of the king pin right through the centre of the track rod ball joint to the centre of the rear axle(s). The drawing clearly shows that in vehicles with two steerable axles, both axles should comply with the Ackermann principle. By trying different track rods and track arms, it is possible to comply as closely as possible with the Ackermann principle. If the wheelbase has been shortened or extended it may be necessary to adjust the track rod and track arms in order to comply with the Ackermann principle. The toe-out when turning cannot be adjusted. However, it is possible and necessary to check and adjust the maximum wheel deflection of the inside wheel, to prevent the tyres from chafing against certain components. Once the maximum wheel deflection is set, this will also determine the deflection for the other wheel or wheels, if the vehicle concerned has two steerable axles. S7 00 123 |