(b) During the accessibility to the maker, getting vehicle armed with braking system systems hence utilize a common diaphragm, this new show criteria specified in the 6(a) and that need to be exposed to one unmarried leaks-types of failure inside the a common diaphragm will get instead getting met with the degree of leakage-variety of incapacity calculated for the six.seven. 6(a) hence pertain which have unmarried leakage-style of failures other than downfalls in a familiar diaphragm.
(c) In the accessibility to the manufacturer, the fresh trailer portion of one farming item trailer, heavier hauler trailer, or pulpwood trailer could possibly get be considered from § for the name as opposed to the requirements away from six(a).
6.step one HookupDate tips Fixed retardation push. With all of most other brakes made inoperative, throughout a fixed drawbar make a forward or rearward recommendations, the brand new fixed retardation push created by employing the fresh vehicle parking brake system will be:
(a) In the case of a car aside from a truck-tractor which is equipped with more one or two axles, such that the quotient static retardation push/GAWR is not less than 0.twenty eight the shaft other than a good steerable front shaft; and you may
With all of parking brakes applied, the automobile shall are fixed up against uphill and you will facing down hill towards the a soft, lifeless portland concrete concrete road having an effective 20-percent values, both
(b) Regarding a truck-tractor which is equipped with over two axles, such that brand new quotient static retardation push/GVWR isn’t less than 0.fourteen.
six.step three.step one Brand new parking brake system might be effective at achieving the minimum efficiency specified either in six.1 or six.2 which have any single leakages-sorts of inability, in any other brake system, away from an associate designed to contain compressed-air otherwise braking system fluid (leaving out failure out-of some a braking system chamber homes however, also incapacity of every brake chamber diaphragm that’s element of any kind of brake system in addition to good diaphragm that is preferred to help you the newest vehicle parking brakes and just about every other brake system), if the challenges in the car’s parking brake spaces are at the amount calculated in six.step 3.4.
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6.3.2 A mechanized form can be so long as, just after a parking brake application is created using the brand new challenges within the the new car’s parking brake spaces at profile calculated into the six.step 3.4, and all of air and liquid demands regarding the automobile’s stopping expertise try after that bled as a result of no, and you will without needing electrical power, keeps the fresh vehicle parking brake software with sufficient parking retardation push to help you meet with the minimal performance given in six.3.step 1 and also in often 6.step one or 6.2.
6.step 3.step three To possess cars and you will vehicles, which have a first reservoir system stress out of one hundred psi and, if the made to pull a car or truck equipped with air brake system, with a good 50 cubic inch test tank attached to the also have range coupling, zero after than three moments since that time out-of actuation out-of the new parking brake manage, new mechanical setting labeled within the six.3.dos are actuated. To possess trailers, toward also have range initial pressurized to a hundred psi using the also have line part of the truck attempt rig (Contour step one) and you will, in the event the made to tow an auto equipped with air brake system, having an effective fifty cubic inches try reservoir connected to the rear have line coupling, no later than just three seconds since that time ventilation for the conditions of front side also provide line coupling is set up, the brand new mechanized setting labeled for the six.step three.2 are actuated. That it needs is satisfied to possess autos, vehicles and trailers one another that have and without any solitary leakage-style of incapacity, in almost any other brakes, from a part built to have compressed-air otherwise braking system liquid (similar to the parenthetical statement specified inside the six.step three.1).