Document ID: chunk:federal_register_of_legislation:F2021C00433:body:0:p18
Version: federal_register_of_legislation:F2021C00433
Segment Type: other
Provision Reference: 
Character Range: 51989–55014

satisfy the requirements of this test if the deceleration achieved is not less than that specified in Table 1 (Item 10).

7.11.                                Parking Brake Test

7.11.1.                          This test must be conducted on a gradient of at least 18 percent, where the vertical rise is expressed as a percentage of the horizontal distance travelled to achieve this rise.  The vehicle must be positioned on the gradient such that its longitudinal axis is parallel to the direction of the gradient.  The 'Parking Mechanism 35/...' (if fitted) must be disengaged.  The service brake must be applied, transmission disengaged, and parking brake must be applied by a single application of the force specified, except that a series of applications to achieve the specified force may be made in the case of a parking brake design that does not allow the application of the specified force in a single application.  The service brake must be released, for a period of not less than 5 minutes.  The vehicle must then be parked in the reverse position on the gradient for not less than 5 minutes with the vehicle in condition described above.

7.11.2.                          The vehicle is deemed to pass this test if:

7.11.2.1.                    for each of the 5 minute periods it remains stationary on the gradient; and

7.11.2.2.                    the force required to actuate the parking brake does not exceed 685 N in the case of a foot-operated parking brake, and does not exceed 590 N applied at the centre of the handgrip, or not closer than 35 mm from the free end of the actuation lever, in the case of a hand-operated parking brake.

7.11.3.                          If the vehicle does not remain stationary re-application of the service brake to hold the vehicle stationary, with re-application of the specified force to the parking brake 'Control' (without release of the ratcheting or other holding mechanism of the parking brake) may be used twice to attain a stationary position.

7.11.4.                          In cases where the 'Parking Brake System 35/..' does not utilise the service brake 'Friction Elements', the 'Friction Elements' of the system may be burnished to the vehicle 'Manufacturer's' recommendation prior to the test.

7.12.                                Service Brake Actuation Time Test

7.12.1.                          For vehicles using air at positive pressure as the operating fluid and incorporating one or more 'Brake Power Units 35/..'.

7.12.2.                          The test must be conducted while the vehicle is stationary.

7.12.2.1.                    Where a vehicle is fitted with a 'Variable Proportioning Brake System' the test must be conducted with the 'Variable Proportioning Brake System' set at  the mass specified in clause 4.1.9.1.

7.12.3.                          Before commencing the test the 'Stored Energy' device(s) must be charged to not more than the 'Average Operating Pressure' and the brakes must be adjusted according