Suspension alignment, complete · Important notes

911 Carrera (996) Wheels, tires, suspension alignment Suspension alignment, complete Important notes I Suspensionalignmenton the new 911 Carrera (996) differs in a number of respectslfrom that of the previous 911 Carrera suspension alignmentprocedures. This involvesthe vehicle heIght adjustment, the wheel-loaddifference from left to right, special tools and corrections to wheel ali~nment. Vehicle heightjwheelload I There is no facility for adjusting the vehicle height. This appliesto both the front andlthe rear axles. The varying thickness of pads between coil springs and spring seats on the right an~ left spring struts on the front and rear axles is not intendedfor changingthe vehicle height but for cohlpensatingfor differences in coil-spring load groups. Since the vehicle height can no longer be adjusted,there is no need for adjustment (fine adjustment) of the wheel-loaddifference between left and right at the front and rear axles. Because of the different equipment versions (additionalequipment),a greater wheel~oaddifference between the left and right is permissible than previouslywas the case in Porsche suspensionalignment(over 20 kg is possible;max. was previously20 kg). This is partly the result of heavier componentscompared with standard equipmentand partly results from additional components that are asymmetricallyarranged. Wheel-alignment corrections Rear axle: The kinematic toe-in is not adjustable.Camber and toe can be adjusted via eccentrics. Front axle: The caster is not adjustableon standard vehicles. In the event of repair$, a caster adjustment facility can be installed if necessary (as with the Boxster). The camber is adjusted by moving the spring strut transversely. For this purpose, lo~sen the three fastening nuts of the spring-strutmount. After adjusting the toe, the lock nuts on the track rods must be tightened to the pr~scribed tightening torque of 50 Nm (37 ftlb.). The steering angle sensor must be calibrated if the previous wheel alignment values for vehicles with PSM (Porsche Stability Management) were changed! The steering angle sensor actual value must be checked after a suspension alignment which resulted in no changes being made to the wheel alignment values. The Porsche System Tester 2 is necessary to calibrate the steering angle sensor an~ to check the steering angle sensor actual value. See description in 911 Carrera 4, Servo No. 45 ~O (Rep. Gr. 45). Special tools Description on Page 44 -9/44 -10. 44 Suspension alignment, complete 44-11 Printed in Germany -34, 1999 996449