(b) In the accessibility to the manufacturer, to own car equipped with brake options hence use a familiar diaphragm, brand new performance standards specified in 6(a) which should be confronted with people solitary leakages-method of incapacity from inside the a familiar diaphragm get alternatively be confronted with the level of leaks-variety of failure computed inside the six.eight. 6(a) and this incorporate that have unmarried leakages-types of downfalls besides failures during the a common diaphragm.
(c) At the option of producer, the truck local hookups in Greensboro North Carolina portion of any agricultural product trailer, heavier hauler truck, otherwise pulpwood truck can get qualify regarding § associated with the title rather than the requirements out-of six(a).
6.step 1 Fixed retardation force. With all of most other brakes produced inoperative, during the a static drawbar make a forward or rearward assistance, the newest static retardation force developed by the use of new vehicle parking brake system might be:
(a) Regarding a car or truck aside from a trailer-tractor which is equipped with over several axles, in a manner that the newest quotient static retardation force/GAWR is not lower than 0.twenty eight for all the shaft aside from good steerable top axle; and you can
Along with parking brake system used, the car should are still stationary up against uphill and you may against downhill towards a smooth, dry portland concrete tangible road which have an excellent 20-per cent amounts, each other
(b) When it comes to a trailer-tractor that's equipped with over a couple axles, such that the new quotient fixed retardation force/GVWR isn’t less than 0.fourteen.
6.3.step 1 New vehicle parking brakes might be ready attaining the lowest results specified either in six.1 otherwise six.2 having any solitary leaks-particular failure, in almost any most other brakes, out of an associate built to include compressed air otherwise brake fluid (leaving out incapacity off some a braking system chamber property however, including inability of every brake chamber diaphragm that's element of any kind of brakes as well as good diaphragm that's popular so you're able to the fresh parking brake system and every other brake system), if the pressures on the automobile's parking brake chambers is located at the levels calculated when you look at the 6.step three.cuatro.
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6.step three.dos A technical means should be provided that, shortly after a parking brake application is made with the brand new demands inside the newest vehicle's parking brake chambers during the account determined from inside the six.step three.4, and all sorts of sky and you may fluid challenges from the automobile's braking possibilities is following bled as a result of no, and without needing electricity, keeps the new parking brake app with sufficient vehicle parking retardation push in order to meet with the lowest show specified when you look at the 6.3.step one and in sometimes 6.step one or six.2.
6.step three.3 To have vehicles and you may vehicles, with a first reservoir program pressure off 100 psi and, in the event that made to tow a motor vehicle equipped with heavens brake system, having good 50 cubic inch try reservoir connected to the also have line coupling, zero later than simply three moments from the time off actuation away from the brand new parking brake handle, the new mechanical form known in the 6.3.2 can be actuated. To possess trailers, towards the also provide line very first pressurized to 100 psi utilising the likewise have line part of the trailer shot rig (Shape 1) and you can, if made to tow an automible equipped with heavens brake system, which have a great 50 cubic inch try reservoir connected to the bottom also provide line coupling, zero later on than just about three moments since that time venting for the environment of your own front side likewise have range coupling is set up, the new mechanized mode known into the six.step 3.2 should be actuated. That it requisite will likely be came across having automobiles, busses and you will trailers both which have and without the solitary leakage-particular failure, in just about any almost every other brake system, from a part built to consist of compressed-air or brake liquid (consistent with the parenthetical keywords given in 6.step 3.1).