6.5. Front Wheel Geometry

rack as shown in Fig. 6.7. Take care not to split the metal.

• Grease the steering rack and refit the rubber gaiter.
• Fit the track rod ball joint the same number of turns and measure the length of the track rod as shown in Fig. 6.5. Make the necessary corrections.
• Tighten the locknut to 6.0 kgm (43.5 ft.lb.). This may, however, be carried out after the toe-in of the front wheels has been checked and adjusted.

6.5. Front Wheel Geometry

The front wheel geometry must be checked when the engine has its kerb weight, i.e. unladen with coolant, oil and fuel.

6.5.0. Caster Angle

The caster angle can be adjusted by placing washers of 2.5 mm thickness at the position shown in Fig. 6.8 on the inside of the reaction strut rod mounting on the chassis. Between 1 and 3 washers are used. It should be noted that the caster angle has been changed over the years. Some values are given in Section 6.0, but we recommend to obtain the latest values from your workshop.

The caster angle can be measured with conventional equipment, but an optical measurement by a specialist is preferred. If the obtained values are outside the limits check the front suspension for distortion or better still have it checked professionally before you start fitting or removing additional shims.

Note the following tightening torques if you carry out the work yourself: Tighten the rear nut of the reaction strut to 14.0 kgm (101 ft.lb.) and the front nut to 10.0 kgm (7.2 ft.lb.). The removal and installation of the reaction strut is described in Section 5.5 (Page 122).

Fig. 6.8 — 1 to 3 shims of 2.5 mm in thickness can be inserted at the position shown by the arrow in order to adjust the caster angle of the front wheels.

6.5.1. Camber Angle

The camber should be checked optically. If a mechanical camber gauge is used, follow the instructions of the manufacturer. The difference between the two sides must not exceed 30'. The camber cannot be adjusted. Incorrect values are mainly due to distortion in the front suspension.

5.5.2. Toe-in Adjustment

The front wheel toe-in can be measured with a mechanical tracking gauge. The