Wheel Alignment Test Requirements

• 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.
• Prescribed tire 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
• 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.
• 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.
• 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.