If no test rig is available for four-wheel drive vehicles, the brake test can also be carried out on a standard single-axle roller dynamometer as follows: |
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| Drive vehicle forwards onto the rollers. |
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| Switch engine off and wait for 2 seconds. |
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| Carry out front brake test. |
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| Start engine and wait for approx. 5 seconds until sufficient vacuum has been built up. |
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| Drive vehicle forwards until rear wheels are positioned on rollers. |
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| Switch engine off and wait for 2 seconds. |
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| Carry out rear brake test. |
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| Start engine and wait for approx. 5 seconds until sufficient vacuum has been built up. |
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