Dictate the maximum tank leakage speed (when you look at the psi each minute), which is the limit speed out-of decrease in sky stress regarding all car’s reservoirs you to definitely show next parking brake software
S5.six.six.5 The first standards having S5.6.six.cuatro are as follows: New reservoir system and gives line is actually pressurized so you’re able to 100 psi, using the have range part of the truck take to rig (Figure 1).
S5.six.6.six The test series to own S5.6.six.cuatro is as uses. People single leakage type of failure, in virtually any almost every other brake system, from a member designed to incorporate compressed-air or brake liquid (similar to the parenthetical phrase specified when you look at the S5.six.step 3.1), are lead on brake system. 30 seconds following the initiation of these ventilation, the supply line is actually repressurized towards the trailer sample rig (Figure step 1). Thirty mere seconds after the initiation of these repressurizing of your own have line, leading have line try ventilated on the conditions. This process is carried out sometimes from the union and you will disconnection of your own have range coupling otherwise because of the entry to a device installed for the the supply line portion of the truck shot rig nearby the also have range coupling.
In the event the car is designed to pull a car armed with air brake system, a good fifty cubic inch attempt reservoir is linked to the butt also provide line coupling
S5.six.7 Restriction amount of popular diaphragm leakages-form of inability/ Similar level of leaks throughout the heavens chamber http://datingmentor.org/cs/hongkongcupid-recenze with you to diaphragm. Regarding car whereby the possibility from inside the S5.6(b) might have been decided to go with, determine maximum amount of common diaphragm leakage-variety of inability (or comparable number of leakages from the heavens chamber which has had that diaphragm) with regards to the methods set forth inside S5.six.seven.step one owing to S5.6.eight.dos.step 3.
S5.six.seven.step 1.step 1 With respect to the pursuing the techniques, influence new threshold quantity of well-known diaphragm leakage-type of inability (or similar amount of leakage throughout the heavens chamber that features one diaphragm) of which the fresh vehicle’s vehicle parking brakes be unreleasable. Which have a primary tank system pressure from one hundred psi, brand new engine turned away from, zero applying of any of the car’s brakes, and, in the event the vehicles was created to pull a vehicle armed with sky brakes, a great 50 cubic inch attempt tank linked to the supply range coupling, present a leaks-type of failure of one’s preferred diaphragm (otherwise comparable leaks in the air chamber which has had that diaphragm). Use the latest parking brake system by simply making a software actuation of your vehicle parking braking system control. Reduce the pressures in all of your automobile’s reservoirs so you’re able to no, trigger the fresh new system and enable it so you’re able to lazy, and enable the fresh pressures throughout the automobile’s reservoirs to rise until they balance or before compressor sealed-out-of point is achieved. During the time, generate a production actuation of your own vehicle parking brake manage, and watch whether or not all the mechanized form known in the S220.127.116.11 will always be actuated and you can contain the parking brake software with sufficient vehicle parking retardation force to meet up with minimal results given either in S5.6.step 1 or S5.six.2. Try this process having increasingly coming down or growing profile (any type of applies) from leakage-method of diaphragm problems or equivalent leakages, to select the lowest level of prominent diaphragm leaks-type of failure (otherwise similar amount of leaks in the heavens chamber who has you to definitely diaphragm) at which the mechanical setting known when you look at the S5.6.step 3.2 continue to be actuated and you can support the vehicle parking braking system software with enough vehicle parking retardation pushes in order to satisfy the minimum efficiency given either in S5.6.1 or S5.6.2.
S5.6.7.step one.2 At quantity of preferred diaphragm leakage-type failure (otherwise equivalent number of leakages on heavens chamber which has one diaphragm) computed when you look at the S5.six.eight.step one.step 1, and using the next processes, determine the fresh new threshold restriction reservoir rates (inside psi for each minute). Which have a primary reservoir program pressure from one hundred psi, the engine turned away from, zero applying of the automobile’s brakes and you will, if the vehicle is made to tow an auto equipped with sky brake system, a fifty cubic inch try reservoir linked to the have line coupling, make an application actuation of your parking braking system handle.