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Volkswagen Workshop Service and Repair Manuals

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If no test rig is available for four-wheel drive vehicles, the brake test can also be carried out on a standard single-axle roll > < Test for vehicles with four-wheel drive via a Haldex coupling

Golf Mk6

The brake test must be performed on a contra-rotating single-axle roller dynamometer for vehicles with four-wheel drive
The brake test must be performed on a contra-rotating single-axle roller dynamometer for vehicles with four-wheel drive
Contra-rotating means that the dynamometer rollers of the single-axle roller dynamometer are driven forwards on one side and backwards on the opposite side.
This prevents brake forces being transferred to the drive train.
The forward rotating wheel is measured during the test, which means two brake tests per axle must be performed.
The maximum test speed must not exceed 6 km/h.
The test rigs authorised by Volkswagen fulfil these requirements.
   

If no test rig is available for four-wheel drive vehicles, the brake test can also be carried out on a standard single-axle roll > < Test for vehicles with four-wheel drive via a Haldex coupling