Document ID: chunk:federal_register_of_legislation:F2025C00108:front:0:p24
Version: federal_register_of_legislation:F2025C00108
Segment Type: other
Provision Reference: 
Character Range: 68840–71909

force due to the effect of gravity on the vehicle, acting in the forward direction and along the vehicle longitudinal centreline, is at least 0.18 times the vehicle weight; and
                 2.             sufficient rearward longitudinal force must be applied for at least 5 minutes to the vehicle chassis, so the resultant of this force and any force due to the effect of gravity on the vehicle, acting in the rearward direction and along the vehicle longitudinal centreline, is at least 0.18 times the vehicle weight.
     4.                           The vehicle is deemed to pass this test if:
             1.             for each of the 5 minute periods it remains stationary; and
             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.
     5.                           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.
 3.                                 Service Brake Actuation Time Test
     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/...'.
     2.                           The test must be conducted while the vehicle is stationary.
         1.                     Where a vehicle is fitted with a 'Variable Proportioning Brake System' the test must be conducted with the vehicle fully laden and/or the 'Variable Proportioning Brake System' set to the fully laden operating condition.
     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 to the 'Manufacturer's' specifications for normal use.
     4.                           The service brake 'Control' must be operated through a full working stroke by an operator seated in the normal driving position.
     5.                           The pressure at the slowest reacting brake chamber must attain a level not less than 65 percent of the 'Average Operating Pressure' within a period not exceeding 600 milliseconds measured from the instant the 'Control' leaves the 'Initial Brake Control Location'.
     6.                           For a vehicle equipped to tow a trailer which uses air at positive pressure:
             1.             when the service brake 'Control' is operated through a full working stroke by an operator seated in the normal driving position, the pressure measured at the extremity of a pipe 2.5 m long with an internal diameter of 13 mm which must be joined to the 'Coupling Head' of the 'Control Line 35/...' must reach 420 kPa within 400 milliseconds