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Table of Content Chassis Wheels, Tires & Alignment

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Wheel Alignment Computer
Model: VAS6421
Superseded To:


The wheel alignment computer VAS 6421 is compatible with the VW operating concept. It is network and multimedia capable. All Group vehicles from Volkswagen AG can be aligned in accordance with the manufacturer`s specifications. Possible rim sizes range from 11" - 22" (optional up to 26")and even vehicles up to 5.4m wheelbase can be catered for. Measuring accuracy is in line with the specifications and is therefore well suited for modern vehicles.
The mobile equipment cabinet finished in VW corporate color contains a powerful brand PC with 20" TFT wide screen monitor, colour printer, keyboard, mouse and remote control. In the lower part of the equipment cabinet is storage space for special tools and accessories.
The 3D measuring system uses two high resolution digital cameras to determine a three dimensional image of the four reflectors attached to the wheels. The reflectors are passive components, which means that they require neither a power supply nor a cable. Raising of the vehicle or the axles is not necessary as 3D technology means that wheel runout compensation is not necessary. The actual measuring sequence itself is much shorter than a conventional wheel alignment computer.
The high resolution cameras automatically follow the reflectors when the vehicle is raised and lowered.
By the use of two camera pillars, a drive-through solution is also possible, e.g. for integration in a rolling road.
Permanent self calibration of the system even permits mobile use.
The 3D height gauge VAS 6421/2 transfers the height values wirelessly and without power supply (no batteries!) by way of 3D technology from Snap-on the wheel alignment computer.
The Windows control software is intuitive, self explanatory and can be used quickly and easily.
Information from the VW workshop manual can be called up and is displayed automatically on screen as soon as this is required.
The ADC/ACC setting is carried out very simply with just one additional digital camera, which means that removal of the front reflectors is no longer necessary.

Items supplied:
Windows control software Pro32 (inc. VW wheel alignment program)
Vehicle data for VW, AUDI, Seat and Skoda for the last 25 years
Vehicle data for other manufacturers for the last 25 years
20" TFT wide screen monitor
Mobile equipment cabinet in RAL 7040 with drawer for printer, enclosed compartment for PC and stowage space for tools and accessories
Powerful brand computer with DVD/CD drive, network card and loudspeaker
Brand colour ink jet printer
2 aluminium camera pillars with three high resolution digital cameras - non-sensitive to external light by e.g. sunlight radiation
1x set reflectors (2x front 2x rear)
4 wheel clamps for fitting reflectors to wheels; clamping range 11" - 22" (optional up to 26") inc. double sided clamping claws for use on aluminium rims and steel rims (without having to remove any plastic wheel covers)
Infrared remote control
Steering wheel holder
Brake pedal depressor
Operating instructions

Recommended accessories:

Cameras for ADC/ACC adjustment
VAS 6331/1, ASE 423 131 00 000

Turntable set
VAS 6421/1, ASE 423 134 00 000

3D height gauge
VAS 6421/2, ASE 423 135 00 000

Trolley set
VAS 6421/3, ASE 423 136 00 000

Further accessories available from manufacturer.


24 months

ASE 423 133 00 000

Tool Requirements

Tool Number VAS6421
Availability SUPERSEDED
Superseded To VAS701001
Tool Class Workshop General Equipment (Can Be Locally Sourced)
VW US Requirement Equivalent
VW US Auto Ship Number
AUDI US Requirement Equivalent
AUDI US Auto Ship Number
VW Canada Requirement Equivalent
AUDI Canada Requirement Equivalent

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