The election of option cannot change the performance standards specified during the S5

(b) On accessibility to the producer, to possess vehicle armed with brake assistance hence need a familiar diaphragm, the overall performance requirements specified within the 6(a) which have to be confronted by one solitary leakage-type of failure when you look at the a familiar diaphragm get as an alternative feel exposed to the degree of leakage-method of inability calculated for the six.seven. 6(a) hence apply having solitary leaks-method of downfalls apart from failures from inside the a common diaphragm.

(c) From the option of the manufacturer, the trailer portion of one agricultural commodity truck, heavy hauler trailer, or pulpwood truck can get meet the requirements from § associated with name instead of the standards out-of 6(a).

six.step 1 Fixed retardation push. With all most other brakes produced inoperative, during a fixed drawbar present an onward or rearward advice, new fixed retardation force created by using the fresh new vehicle parking brake system is:

(a) When it comes to a car other than a trailer-tractor which is equipped with more one or two axles, such that the fresh quotient fixed retardation push/GAWR is not less than 0.28 for the axle aside from a good steerable front axle; and

With parking brakes used, the automobile should are still stationary facing constant and you may facing down hill into a mellow, dry portland cement tangible roadway which have a great 20-% stages, each other

(b) In the case of a trailer-tractor that is equipped with more one or two axles, in a fashion that new quotient static retardation push/GVWR is not lower than 0.14.

6.step 3.1 The latest vehicle parking brake system will be with the capacity of reaching the lowest show specified either in six.step one or 6.2 that have any solitary leakage-types of failure, in any other brake system, out-of a part designed to contain compressed-air otherwise braking system fluid (excluding incapacity off a component of a brake chamber homes however, as well as inability of every braking system chamber diaphragm which is section of any other brake system along with a great diaphragm which is well-known to the vehicle parking brake system and every other brakes), in the event the pressures about automobile’s vehicle parking braking system chambers are at the amount calculated inside the 6.3.4.

S5

6.3.dos A physical form might be provided, immediately following a vehicle parking brake application is fashioned with the newest pressures during the the latest automobile’s parking brake spaces at the accounts calculated within the 6.3.cuatro, and all sky and you can liquid challenges in the car’s braking possibilities are following bled down seriously to no, and you can without needing electricity, retains the brand new vehicle parking braking system app with enough parking retardation force so you’re able to meet up with the minimum results specified during the 6.3.1 plus in sometimes six.1 or six.2.

6.step 3.3 Getting autos and you will buses, with an initial reservoir program pressure of one hundred psi and you can, if the designed to pull an auto equipped with sky brakes, that have a good fifty cubic inch try reservoir attached to the supply line coupling, zero later on than just around three seconds since out of actuation away from the fresh parking braking system handle, the mechanized mode known into the six.step three.dos should be actuated. To own trailers, on the have range initially pressurized in order to 100 psi by using the likewise have range portion of the truck take to rig (Shape 1) and you will, when the designed to kontynuować ten link tutaj teraz pull an automobile equipped with sky brake system, which have a fifty cubic inch test reservoir connected to the bottom supply line coupling, no after than just three mere seconds ever since ventilation with the conditions of side have line coupling is established, new physical means referred to for the six.step 3.dos shall be actuated. Which needs might be came across to possess cars, buses and you can trailers one another that have and you will without the single leakages-types of incapacity, in any most other brake system, off a member designed to include compressed air or braking system water (consistent with the parenthetical statement given in the 6.3.1).