Component Tests and General Diagnostics

Requirements
^ Check suspension, wheel bearing, steering and steering linkage for excessive play and damage.
^ Tread depth difference of no more than 2 mm on an axle.
^ Tires inflated to correct pressure.
^ Vehicle unladen.
^ Fuel tank must be full.
^ Spare wheel and vehicle tools stowed at correct installation locations.
^ The fluid reservoir for the windshield/headlight washer system must be full.
^ Make sure that the sliding plates and turn tables are not touching the end stop when checking the wheel alignment.

Note:
^ The test equipment must be properly adjusted and attached to the vehicle, observe manufacturers operating instructions.

Apply to the manufacturer of your vehicle alignment equipment for training as and when required.

Vehicle alignment platforms and vehicle alignment units/vehicle alignment computers can lose their calibration over a period of time.

Vehicle alignment platforms and vehicle alignment units/vehicle alignment computers should be checked and if necessary adjusted within the framework of an inspection/maintenance at least once a year!
^ Treat these highly sensitive units carefully and conscientiously!

Explanation of PR. No. 1BA, 1BC, 1BE, 1BB, 1BF and 1BP
Various suspensions are available as optional equipment. They are indicated by the PR numbers.

Suspension version installed in vehicle is indicated by the corresponding PR. No. on the vehicle data plate (arrow).





Example of a vehicle data sticker

In this example the vehicle is equipped with the standard suspension - arrow -.

The vehicle data sticker is located in spare wheel well and in the Maintenance booklet.





The following table shows the meaning of the PR numbers. These are critical for wheel alignment.