Document ID: chunk:federal_register_of_legislation:F2021C00482:body:0:p18
Version: federal_register_of_legislation:F2021C00482
Segment Type: other
Provision Reference: 
Character Range: 49593–52562

gradient; and
35.5.16.2.2.          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.
35.5.16.3.                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.
35.5.16.4.                In cases where the 'Parking Brake System 35/00' does not utilize the service brake 'Friction Elements', the 'Friction Elements' of the system may be burnished to the vehicle 'Manufacturer's' recommendation prior to the test.
35.5.17.                      Service Brake Actuating Time Test
35.5.17.1.                This test is applicable only to vehicles using air at positive pressure as the operating fluid and incorporating one or more 'Brake Power Units 35/00'. The test is conducted while the vehicle is stationary.
35.5.17.2.                Before commencing the test the 'Stored Energy' device(s) shall be charged to not more than the 'Average Operating Pressure.'
35.5.17.3.                The service brake 'Control' shall be operated through a full working stroke by an operator seated in the normal driving position. The vehicle shall be deemed to satisfy the requirements of this test if the pressure at the brake chamber terminating the longest brake pressure line from the service brake 'Control' attains a level not less than 65 per cent of the 'Average Operating Pressure' within a period not exceeding 600 milliseconds measured from the instant the 'Control' leaves the 'Initial Brake Control Location'.
35.5.17.4.                A vehicle equipped to tow a trailer which uses air at positive pressure as the brake operating fluid shall satisfy the test parameters specified in clause 35.5.17.3, but with the pressure measured at the end of a pressure
vessel (used for test only) of not less than 13 mm internal diameter and not less than 2.5 metres long connected to the trailer control line coupling point of the drawing vehicle.
35.6.                                DYNAMOMETER SERVICE BRAKE FADE TEST

         35.6.0 When tested under the conditions of clause 35.6.1, brake assemblies shall meet the requirements of clause 35.6.2.

35.6.1.                          Dynamometer Test Conditions
35.6.1.1.                    The dynamometer inertia for each wheel shall be not less than that determined from the expression:
where:
I = dynamometer inertia, in kg.m2
M = mass supported by the wheel at the 'Maximum Loaded Test Mass 35/00', in kg
R = 'Static Loaded Tyre Radius' of the tyre, as specified by the tyre manufacturer, in metres.
35.6.1.2.