Influence the most tank leakage rates (for the psi per minute), which is the restrict speed away from reduction of heavens pressure out of some of the car’s reservoirs one overall performance next vehicle parking braking system app
S5.six.six.5 The original standards having S5.6.6.4 are listed below: The brand new reservoir program and provide range is pressurized so you can 100 psi, making use of the supply line part of the trailer sample rig (Shape 1).
S5.six.six.6 The test series getting S5.six.6.cuatro can be uses. Any solitary leakage type failure, in any other brakes, from a member built to contain compressed-air otherwise braking system fluid (similar to the parenthetical statement specified during the S5.6.3.1), are brought from the brakes. 30 seconds after the initiation of such ventilation, the supply range is actually repressurized into truck test rig (Figure step 1). Thirty mere seconds following initiation of such repressurizing of your own supply range, the front have range try vented towards the conditions. This technique is completed sometimes because of the connection and disconnection of your have line coupling otherwise by entry to a device strung in the production line portion of the trailer try rig around the have range coupling.
If for example the vehicles is designed to pull a car equipped with heavens brake system, an excellent Hialeah escort service 50 cubic inch try tank is attached to the buttocks have range coupling
S5.six.7 Maximum level of popular diaphragm leaks-type of failure/ Equivalent number of leakage on the air chamber that has had one diaphragm. In the example of automobile where the option inside the S5.6(b) could have been chose, influence maximum level of popular diaphragm leakage-style of incapacity (otherwise equivalent amount of leakage in the sky chamber that has that diaphragm) with regards to the methods established in S5.six.eight.step one owing to S5.6.eight.dos.step 3.
S5.six.seven.step 1.1 With respect to the adopting the processes, influence brand new tolerance amount of prominent diaphragm leakage-sort of incapacity (or comparable number of leakage throughout the air chamber that contains you to definitely diaphragm) where the newest vehicle’s parking brakes be unreleasable. Which have a first reservoir system tension out of 100 psi, the latest engine turned out of, no application of any of the automobile’s brakes, and, whether your vehicles is made to tow a motor vehicle armed with heavens brakes, a 50 cubic inch take to tank linked to the have range coupling, establish a beneficial leakage-method of incapacity of well-known diaphragm (or comparable leakage on the heavens chamber containing one to diaphragm). Pertain the vehicle parking brake system by making a software actuation of parking brake manage. Reduce the pressures in every of your own automobile’s reservoirs in order to zero, trigger the fresh motor and enable it to sluggish, and invite the new demands about automobile’s reservoirs to rise up until they stabilize otherwise until the compressor shut-out of section try reached. During the time, generate a launch actuation of your own parking braking system manage, and view whether most of the mechanized setting known into the S5.six.step 3.2 are nevertheless actuated and you may hold the parking braking system applications with enough vehicle parking retardation push in order to meet minimal results given in a choice of S5.six.step 1 or S5.six.dos. Repeat this techniques that have increasingly decreasing otherwise increasing account (any is applicable) of leaks-kind of diaphragm downfalls otherwise similar leakage, to find the lowest quantity of common diaphragm leaks-particular incapacity (or similar level of leakages on the sky chamber who has you to diaphragm) from which every physical means known during the S5.6.step three.dos remain actuated and you can hold the parking brake programs with plenty of parking retardation pushes to meet minimal efficiency specified either in S5.six.1 or S5.six.dos.
S5.6.eight.1.2 In the level of common diaphragm leaks-type incapacity (or comparable quantity of leakage from the air chamber which has one diaphragm) determined in the S5.six.7.step one.step 1, and ultizing next processes, influence the new threshold limit tank rates (within the psi a minute). With an initial reservoir program pressure out of 100 psi, the fresh new engine turned regarding, zero applying of some of the automobile’s brake system and you may, if the vehicles was designed to tow an automible armed with air brake system, an excellent 50 cubic inches try tank linked to the also provide range coupling, apply actuation of your own vehicle parking braking system manage.