Suspension alignment General

Use optical or electronic wheel alignment equipment to check the suspension alignment. For measuring operations, refer to the operating instructions of the equipment manufacturer. The following requirements must be met prior to the wheel alignment procedure:

Vehicle curb weight acc. to DIN 70020, i.e. vehicle in roadworthy condition with full fuel tank and spare wheel

Axle joints and wheel bearing play o.k.

Tire pressure to specification, virtually uniform tread depth on all tires

If the front and rear of the car are measured, start by checking and adjusting (if required) the wheel settings of the rear axle. Set steering wheel and steering gear to center position when adjusting toe-in.

Before adjusting the wheel settings of the front and rear axles, it is recommended (or required *) to check the height settings of the rear axle as well as, in the case of vehicles with height adjustable front struts, of the front axle at DIN curb weight.

If wheel load scales are available, the height adjustment feature may be used to reduce the wheel load difference between the left-hand and right-hand sides to the minimum possible. The wheel load difference is adjusted by modifying the vehicle ride height within the height tolerance. Try to achieve a left-to-right wheel load difference that is as small as possible.

if operations affecting the ride height have been carried out or if it is evident that the ride height is incorrect

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