14.4.2 Calibration Preparation Work

Special Tools And Workshop Equipment Required

There is much preparation work that must be performed before calibrating using the Vehicle Diagnostic Tester.

Requirements:

Move the vehicle onto a secure flat surface.
Apply the parking brake - the vehicle must not move during the measurement.
Place the front wheels in a straight-ahead position - steering wheel in neutral position.
No persons may be in the vehicle interior during the measurement.
Do not open and close the vehicle doors during calibration.

Procedure

Connect the Vehicle Diagnostic Tester.
Switch the ignition on.
Tighten three wheel bolt adapters (17 mm) for the wheel bolts on each -VAS6350/1-.
Insert the measuring paddle on both -VAS6350/1- and secure it with the locking nut.
Place the -VAS6350/1- onto the wheel bolts on both rear wheels.
- The wheel center mounting rotation center must be in the wheel rotation center.
NOTE: Place the -VAS6350/1- on the wheels so that the "anti-theft wheel bolts" are not connected with wheel center mounting.
Adjust the measuring paddle using the lock nuts so that they move freely just above the floor.
- The measuring paddles must move easily.
- The measuring paddles must be vertical.
Position the -VAS6350A- at distance -a- to the rear wheels.
- Dimension -a- = 1, 700 ± 10 mm
Switch on the -VAS6350/2- with the ON button.
Display on the -VAS6350/2-:
- "- - - m"
NOTE: The laser is switched on at same time.
Hold the -VAS6350/2- -2- flush against the catch bracket, as shown, for the distance measurement.
- The -VAS6350/2- must lie firmly against the catch bracket.
Make sure the "laser beam" for the distance measurement contacts the lower enlarged part of the measuring paddle -1-.

If that is not the case, correct the measuring paddle height using the locking nuts on the -VAS6350/1-.

Display on the -VAS6350/2-:

"1, 700 m" (specified value: 1700 ± 10 mm).
- Repeat the measurement procedure from the left catch bracket to measuring paddle on left rear wheel.
The distance value must be the same on both sides.

If both measured values are not the same, adjust the -VAS6350Aaccordingly.

NOTE: The vehicle in the illustration is only a basic outline.

Secure the -VAS6350/4- to the -VAS6350A- mount on the rear left.
- When installed correctly, the vehicle electrical system voltage wire must be connected at the bottom left of the calibration device (as seen in direction of travel).
- Dimension -a- = 811 mm (measured from upper edge of calibration device to workshop floor).
The adjustment dimension is set with the measuring point -arrow- on the base of the calibration device on the scale of the steel ruler -1-.
- Left adjustment dimension = 811 mm (read on measuring scale -1-).
Connect the -VAS6350/4- to the vehicle electrical system voltage.
Using the bubble level (level indicator) -arrow-, bring the - VAS6350A- into a horizontal position by turning the plastic bases.
Wear "laser protective eyewear".

NOTE: The vehicle in the illustration is only a basic outline.
Turn on the -VAS6350/3A- on the -VAS6350A-.
Align the entire -VAS6350A- so that the laser beam shines on the center of the vehicle rear above the VW emblem.
Check right and left distance between catch bracket on the - VAS6350A- and measuring paddle -1- on wheel mountings again.
- Specified value: 1700 ± 10 mm