BMW X3 Service & Repair Manual: Kds wheel alignment check with ride height measurement without vehicle load

IMPORTANT: Do not perform wheel alignment with the vehicle unladen.

• If the technical prerequisites for alignment with ride height input are not fulfilled
• If the vehicle in question is a damaged vehicle

NOTE:

• Read and comply with GENERAL INFORMATION AND DEFINITIONS.
• Read and comply with GENERAL CHASSIS DEFINITION.
• Update KDS DATA STATES.
• Check compliance with TEST CONDITIONS, repair vehicle if necessary.

• If necessary, prepare vehicle hoist.
• Drive vehicle onto vehicle hoist.

NOTE: The front and rear wheels must be positioned centrally on the rotary and sliding plates.

NOTE: Rotary plates may vary from illustration depending on the manufacturer!

NOTE:

• Vehicles with active steering: Start up active steering prior to wheel alignment.

  On vehicles with rear axle slip angle control: Service function "Moving HSR actuator to center position" is included in active steering start-up.

Attach pickup/ride height marks to vehicle (observe specifications from the various equipment manufacturers).

IMPORTANT: Use only quick connectors with poly control pins (1).

Due to excessive measuring inaccuracy, other quick-clamping units are not permitted!

Illustration of KDSII pick-up!

• Enter customer and vehicle data
• Identify chassis version and select vehicle
• Enter tire inflation pressure and tread depth
• Measure VEHICLE RIDE HEIGHT with tape measure (only Beissbarth KDSII wheel alignment equipment) If the ride height is outside the tolerance range (+40/-20 mm), load or unload vehicle accordingly to adjust the vehicle in this ride-height window.
• Install brake tensioner.

• Remove locking pins from both rotary and sliding plates.
• Perform input measurement in accordance with equipment manufacturer's instructions.
• If necessary, adjust front axle and rear axle .
• Perform output measurement in accordance with equipment manufacturer's instructions.
• Save and print out test record.
• Insert locking pins into both rotary and sliding plates
• Remove chassis/wheel alignment system

MEASURING VEHICLE RIDE HEIGHT

Determine actual ride height (A) - to do so, attach tape measure to rim flange (2) at bottom middle and measure to wheel arch lower edge (1).