FRONT WHEEL CAMBER CASTOR AND STEERING AXIS INCLINATION ANGLES
Camber angle—To check and adjust
Camber angle is the angle of inclination of the front wheel from the vertical when viewed from the front. Outward inclination at the top of the wheel is termed “positive” while inward inclination is termed “negative”.
The camber angle is adjusted by positioning shims between the crossmember turret and the upper wish-bone link fulcrum pin the camber angle is given in the “General Data Section”.
The relationship between the camber and steering axis Inclination angles is such that camber angle will alter as the steering axis inclination angle alters. Therefore it is unadvisable to adjust camber angle until the steering axis Inclination angle has been checked.
1. Prepare the car, see under “Preparation of Car”.
2. Apply a suitable camber angle checking gauge to the wall of the tyre and check the camber angle, taking care to follow the manufacturer’s Instructions avoiding any front wheel run-out which should be positioned horizontally and the bulge in the tyre above its point of contact with the ground. Note the gauge reading.
3. Carry out the same procedure with the opposite front wheel and make a note of the camber angle.
4. When the camber angles are Incorrect, remove the weights from the front of the car. Jack up the front of the car (using a wooden beam between the jack and the (crossmember), remove the front wheel and jack up the bottom wishbone link to remove all strain from the top link.
5. Loosen BUT DO NOT REMOVE the two bolts securing the top fulcrum pin to the spring turret.
6. To INCREASE the camber angle, move the required thickness of shims from between the spring turret and the outer face of the fulcrum pin (Position A) to
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between the inner face of the fulcrum pin and the attachment plate (Position B). Any short alignment shims must be left undisturbed.
To DECREASE the camber angle, add the required thickness of new shims between the spring turret and the outer face of the fulcrum pin (Position A). Any short alignment shims must be left undisturbed.
7. Tighten the two top fulcrum pin bolts.
8. Refit the front wheel and remove the jack from under the bottom wishbone link.
9. Adjust the camber angle of the opposite front wheel as necessary in a similar manner.
Castor angle—To check
Castor angle is the angle of inclination of the stub axle carrier axis from the vertical when viewed from the side. Rearward inclination at the top of the axis is termed “positive”, while forward inclination is termed “negative”. The angle is set during production and cannot be reset but must be checked in the event of accident damage to ensure the angle is within the specified limits. The calculated castor angle is given in the “General Data Section”.
1. Prepare the car. See under “Preparation of Car”.
2. Apply a suitable castor angle checking gauge to the wall of the tyre and check the castor angle, taking care to follow the manufacturer’s instructions, avoiding any front wheel “run-out” which should be positioned horizontally and the bulge in the tyre above its point of contact with the ground. Note the gauge reading.
3. Carry out the same procedure with the opposite front wheel and make a note of the castor angle.
4. When the castor angles are incorrect, the front suspension must be dismantled and each detail ex-amined for wear and accidental damage.
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