Test Prerequisites

Test Prerequisites

• Check suspension, steering and steering linkage for excessive play and damage, repair if necessary.

• Tread depth difference may be no more than 2 mm on an axle.

• Tires inflated to prescribed pressure.

• Drive the vehicle onto the alignment rack without tension. Move the vehicle back and forth if necessary to relieve any tension on the axle components.

• Vehicle accurately aligned, suspension bounced and rocked several times

• Make sure that the sliding plates and turn tables are not touching the end stop when checking the wheel alignment.

• The steering wheel must be "evened out" into the center position before beginning the measuring and adjusting. Use steering wheel scales (VAS 6458) for this.

• The measurement sensor must be properly adjusted and attached to the vehicle; observe device manufacturer's operating instructions.

• Make sure that the sliding plates and turn tables are not touching the end stop when checking the wheel alignment.

• Vehicle curb weight "Curb weight means: the weight of a vehicle ready to be driven (the fuel tank is full, the windshield washer fluid reservoir is full, spare wheel, vehicles tool and vehicle jack and no people in the vehicle)"

• Spare wheel, vehicle tools and vehicle jack must be located in the position specified by the vehicle manufacturer.

• Perform wheel run-out compensation: Permissible axial run-out of the wheel rims can exceed the specified toe setting tolerance. If compensation for wheel run-out is not performed, it will not be possible to obtain a correct toe-in adjustment.

• After a certain period, wheel alignment platforms and computer equipment can lose their original leveling setting and adjustments.

• Alignment platforms and alignment units/alignment computers should be calibrated at least once a year during maintenance.

• Treat these highly sensitive units carefully and conscientiously.

• If necessary, contact the manufacturer for familiarization with the proper use of the equipment.