S5
6.seven.2.step 1 With regards to the after the processes, determine the newest tolerance number of common diaphragm leaks-kind of inability (or similar number of leakage from the heavens chamber that contains you to diaphragm) where this new car’s parking brake system getting unreleasable. That have an initial tank program and supply range tension off a hundred psi, zero applying of some of the car’s brakes, and you will, in the event your car is made to pull a motor vehicle armed with Honolulu singles heavens brake system, a great fifty cubic inch sample reservoir connected to the likewise have line coupling, introduce a beneficial leakage-type of failure of your preferred diaphragm (otherwise comparable leaks regarding the air chamber that has that diaphragm). Pressurize the production line from the linking the trailer’s top supply line coupling to your also provide range portion of the trailer shot rig (Figure step one) on regulator of the trailer shot rig put at 100 psi, to see if or not all physical means regarded inside six.3.2 remain actuated and you will secure the vehicle parking brake applications with plenty of parking retardation forces to get to know the minimum results specified in a choice of 6.1 otherwise 6.dos. Try this procedure with more and more decreasing or broadening accounts (any kind of applies) off leakages-types of diaphragm downfalls or comparable leaks, to select the minimal number of popular diaphragm leaks-style of failure (or comparable number of leakage throughout the heavens chamber that has had one diaphragm) at which most of the mechanized mode labeled inside six.3.2 will always be actuated and keep the parking braking system programs with plenty of vehicle parking retardation forces meet up with minimal overall performance given either in 6.1 or six.2.
Make a parking braking system software because of the ventilation leading have range coupling to your ambiance, and reduce the newest demands throughout of your vehicle’s reservoirs to help you zero
6.7.dos.2 At the number of popular diaphragm leakage-type of incapacity (otherwise comparable number of leakage on the sky chamber with you to definitely diaphragm) computed into the six.eight.2.1, and utilizing another processes, determine the threshold restriction tank leakage rate (during the psi per minute). Which have an initial reservoir system and offer line pressure out of 100 psi, no applying of the car’s brakes and you may, in case the vehicle was designed to tow a car or truck equipped with sky brakes, good 50 cubic inch sample reservoir linked to the rear have line coupling, create a vehicle parking braking system software of the ventilation the leading also have range coupling on ambiance. Determine maximum reservoir leakage rates (inside psi per minute), which is the restrict speed off decrease in sky stress regarding the automobile’s reservoirs that results next vehicle parking brake app.
6.seven.2.3 Making use of the pursuing the procedure, an excellent leakages-variety of incapacity of the prominent diaphragm (or equivalent leaks about air chamber with you to diaphragm) one causes a max tank leakage rates that is three moments the fresh threshold restriction reservoir leakages speed calculated when you look at the six.seven.2.dos. With a primary tank system and supply range tension out-of a hundred psi, zero application of any of the car’s brake system and you can, in case the automobile is designed to pull a vehicle equipped with sky brakes, a beneficial fifty cubic inch try tank linked to the buttocks also provide range coupling, build a vehicle parking brake application of the ventilation leading also provide line coupling on ambiance. Influence maximum tank leakages rate (into the psi each minute), which is the restrict price from reduced amount of heavens stress off any of the car’s reservoirs one overall performance next vehicle parking brake app. The amount of common diaphragm leakage-sorts of incapacity (or similar amount of leaks throughout the air chamber that features you to diaphragm) regarding the so it tank leakages rates is the level that’s for usage underneath the solution set forth inside the 6(b).
7 Crisis brake system having vehicles and you may busses. step 1, adjusts toward criteria away from eight.step 1 owing to seven.3. Yet not, new vehicle part of a car or truck transporter shouldn’t have to meet the drive criteria from seven.1 and you can 7.step three.
