six.7.dos.step one Depending on the pursuing the processes, determine the brand new endurance quantity of well-known diaphragm leakages-particular incapacity (otherwise comparable amount of leaks in the air chamber containing you to definitely diaphragm) at which the latest vehicle’s parking brakes be unreleasable. That have an initial reservoir program and supply line pressure of 100 psi, zero application of some of the automobile’s brakes, and, if for example the automobile was created to pull a motor vehicle armed with air brakes, an effective fifty cubic inches sample reservoir connected to the supply range coupling, present good leakage-particular incapacity of preferred diaphragm (or similar leaks regarding the heavens chamber containing that diaphragm). Generate a parking brake app because of the ventilation the front likewise have range coupling towards the environment, and relieve the fresh demands in all of vehicle’s reservoirs to zero. 6.3.2 continue to be actuated and you can hold the parking braking system applications with sufficient parking retardation forces in order to meet minimal show given in a choice of 6.1 otherwise 6.dos. Repeat this process with progressively coming down or expanding account (any type of is applicable) from leakages-kind of diaphragm downfalls otherwise equivalent leaks, to choose the minimum amount of well-known diaphragm leakages-kind of inability (or equivalent number of leakages from the heavens chamber who has you to definitely diaphragm) of which every mechanical form regarded into the six.step three.2 are nevertheless actuated and you can secure the vehicle parking braking system programs with plenty of vehicle parking retardation forces to fulfill minimal abilities given either in 6.step 1 or 6.2.

Pressurize the production line by linking the newest trailer’s front side also provide line coupling towards the also have line portion of the trailer shot rig (Profile step 1) into regulator of one’s truck sample rig set at one hundred psi, to check out whether all technical form labeled from inside the S5

six.seven.dos.dos During the level of prominent diaphragm leakage-style of incapacity (or similar quantity of leakages on air chamber with which has you to diaphragm) determined into the 6.eight.2.1, and utilizing the following process, dictate the fresh endurance limit tank leaks rate (during the psi for each minute). […]