Leading have line coupling is vented with the surroundings

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Leading have line coupling is vented with the surroundings

At that time, make a release actuation of vehicle parking brake manage, and view whether or not all of the technical setting referred to for the S5

S5.6.6.5 The initial requirements to own S5.six.six.cuatro are listed below: Brand new tank program and supply line is pressurized so you’re able to a hundred psi, utilizing the supply range part of the truck shot rig (Figure step 1). Should your vehicle is designed to tow a car equipped with air brake system, a 50 cubic inch take to tank try linked to the buttocks also provide line coupling.

30 seconds following the initiation of such venting, the production line try repressurized towards the truck test rig (Contour step one)

S5.six.six.6 The test succession to own S5.6.six.cuatro can be observe. Any unmarried leakage method of incapacity, in any almost every other brake system, from an associate made to incorporate compressed-air or brake liquid (similar to the parenthetical phrase given in the S5.6.step three.1), is actually lead on the brakes. 30 mere seconds following initiation of such repressurizing of the also have line, leading have range is vented with the conditions. This technique is completed sometimes by the connection and you will disconnection of one’s also have range coupling or because of the use of a valve installed in the the production line part of the truck test rig around the also provide line coupling.

S5.six.eight Limit amount of popular diaphragm leakage-variety of inability/ Similar amount of leakages from the heavens chamber which has had you to definitely diaphragm. When it comes to automobile in which the option in the S5.6(b) could have been chose, dictate the maximum level of preferred diaphragm leakages-types of inability (or comparable amount of leakage regarding the air chamber which includes you to diaphragm) with respect to the actions established from inside the S5.6.7.step 1 due to S5.6.7.dos.3.

S5.6.seven.step 1.step one Depending on the adopting the processes, determine the brand new endurance level of well-known diaphragm leaks-particular inability (otherwise equivalent quantity of leaks about sky chamber with you to definitely diaphragm) from which this new car’s parking brakes feel unreleasable. Having a primary reservoir program pressure out of one hundred psi, the engine-turned away from, no applying of some of the car’s brake system, and you may, if your automobile is made to tow an auto armed with heavens brakes, a good 50 cubic inches decide to try reservoir linked to the supply range coupling, present good leaks-types of inability of your own common diaphragm (otherwise equivalent leakages in the heavens chamber which has had you to diaphragm). Pertain the fresh vehicle parking brakes by simply making a credit card applicatoin actuation of vehicle parking braking system control. Slow down the challenges in every of the car’s reservoirs to help you no, turn on the fresh motor and permit it so you’re able to lazy, and permit the fresh demands regarding vehicle’s reservoirs to increase up until they balance or up until the compressor closed-from area is actually achieved. 6.step three.dos are nevertheless actuated and you can support the parking braking system programs with sufficient vehicle parking retardation force in order to meet the minimum results given in a choice of S5.six.1 or S5.six.dos. Do that process with progressively coming down otherwise increasing membership (any type of applies) away from leakages-style of diaphragm failures otherwise comparable leakages, to select the minimal number of prominent diaphragm leaks-method of incapacity (otherwise comparable level of leakage about air chamber that features you to definitely diaphragm) of which all mechanical means referred to into the S5.6.step three.dos are actuated and you can contain the parking brake programs with sufficient vehicle parking retardation pushes to get to know minimal abilities specified in both S5.6.step 1 otherwise S5.six.dos.

S5.6.eight.1.2 During the amount of common diaphragm leakages-kind of incapacity (or comparable quantity of leaks from the sky chamber that has one to diaphragm) computed within the S5.six.eight.1.step one, and using the second procedure, dictate the newest threshold maximum reservoir speed (within the psi per minute). Which have a primary reservoir program pressure from a hundred psi, the latest engine-turned out-of, no application of all automobile’s brakes and you will, in the event your car was designed to pull a vehicle armed with sky brake system, an effective 50 cubic inches shot reservoir connected to the also have line coupling, apply actuation of vehicle parking brake control. Influence maximum tank leakages rates (inside psi for each minute), the restriction price away from reduction of heavens stress out of any of the vehicle’s reservoirs one overall performance up coming vehicle parking brake app.

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