Determine the utmost tank leakage rates (in psi per minute), the restrict rates away from reduced total of heavens pressure out-of all car’s reservoirs one to efficiency after that parking brake app
S5.six.6.5 The first requirements having S5.6.6.cuatro are as follows: The fresh new reservoir system and supply line was pressurized to one hundred psi, utilising the also provide line part of the trailer attempt rig (Contour 1).
S5.six.6.6 The exam sequence getting S5.6.6.cuatro can be pursue. Any single leaks sorts of failure, in almost any almost every other brake system, from an associate built to include compressed air or brake liquid (similar to the parenthetical terms given for the S5.six.3.1), try put regarding brake system. 30 seconds pursuing the initiation of such venting, the production line try repressurized into truck sample rig (Figure step one). 30 seconds pursuing the initiation of these repressurizing of one’s supply range, the front likewise have line was vented toward surroundings. This method is completed sometimes by connection and you can disconnection of supply range coupling otherwise of the entry to a valve hung in the production line portion of the trailer decide to try rig near the likewise have line coupling.
When your auto is designed to pull an auto equipped with air brake system, a great fifty cubic inch take to reservoir is connected to the buttocks have range coupling
S5.6.seven Restriction number of preferred diaphragm leakage-style of failure/ Comparable number of leakage throughout the sky chamber who has that diaphragm. Regarding auto where the option during the S5.6(b) might have been selected, dictate the maximum number of common diaphragm leaks-sort of failure (otherwise comparable amount of leakages about heavens chamber containing one to diaphragm) according to the methods set forth within the S5.six.7.step 1 as a consequence of S5.6.seven.2.3.
S5.six.eight.1.step 1 Depending on the following process, dictate the fresh new tolerance level of preferred diaphragm leaks-method of failure (or comparable amount of leaks throughout the air chamber which has had one to diaphragm) of which new car’s parking brake system feel unreleasable. Having a first reservoir system stress out-of a hundred psi, the fresh new engine turned of, no application of any of the car’s brake system, and you will, if for example the car was designed to tow a car or truck armed with sky brakes, an effective fifty cubic inches test reservoir attached to the supply line coupling, establish a great leakages-method of inability of one’s well-known diaphragm (or equivalent http://datingmentor.org/nl/joingy-overzicht/ leakages on the heavens chamber with which has you to definitely diaphragm). Pertain new vehicle parking brakes by creating an application actuation of the parking braking system handle. Reduce the pressures in every of one’s automobile’s reservoirs to no, turn on the latest motor and invite they to idle, and permit this new demands throughout the car’s reservoirs to go up up until they balance out or till the compressor shut-away from area try hit. At that time, create a release actuation of your parking braking system control, and find out whether or not the mechanized function referred to inside the S5.6.step three.dos continue to be actuated and you may hold the vehicle parking braking system apps with enough vehicle parking retardation force to meet up the minimum results given either in S5.six.step 1 otherwise S5.six.2. Try this procedure with progressively coming down or growing levels (whichever can be applied) off leaks-method of diaphragm failures otherwise comparable leakages, to find the lowest number of prominent diaphragm leaks-sort of incapacity (or similar number of leakage regarding the sky chamber that has had you to definitely diaphragm) where most of the mechanized means regarded inside the S5.6.step three.dos continue to be actuated and you can keep the vehicle parking braking system apps with sufficient vehicle parking retardation forces to meet the minimum show specified either in S5.six.1 otherwise S5.6.2.
S5.six.seven.step one.2 Within level of preferred diaphragm leaks-style of incapacity (otherwise similar amount of leakage on air chamber that has had one diaphragm) calculated inside S5.6.seven.step one.1, and using the second procedure, influence the tolerance maximum tank rate (in psi for each minute). Having a primary reservoir program tension out of one hundred psi, brand new engine-turned from, zero applying of the vehicle’s brakes and you may, should your auto was designed to tow a motor vehicle equipped with air brakes, a beneficial fifty cubic inches test reservoir linked to the have line coupling, make an application actuation of vehicle parking braking system control.
