Implement the newest parking brakes by simply making an application actuation of your own vehicle parking braking system manage
S5.six.6.5 The original criteria getting S5.six.6.4 are listed below: This new tank system and supply range was pressurized so you’re able to 100 psi, utilising the supply range part of the truck sample rig (Shape 1).
S5.6.6.six The test succession to own S5.6.six.4 can be as uses. One single leakage particular inability, in every most other brakes, away from an associate made to have compressed air otherwise braking system water (similar to the parenthetical words given from inside the S5.six.3.1), is actually produced regarding brakes. 30 moments following free gay dating websites Germany the initiation of such venting, the supply line is repressurized toward trailer sample rig (Shape step one). 30 mere seconds following the initiation of these repressurizing of one’s also have range, the leading have range are vented with the atmosphere. This technique is completed possibly of the commitment and you will disconnection of your also have range coupling or of the access to a valve installed inside the supply range portion of the truck decide to try rig close to the also have range coupling.
S5.six.eight Restrict quantity of well-known diaphragm leakages-method of failure/ Comparable quantity of leaks throughout the heavens chamber that features you to diaphragm. When it comes to automobile where the choice in the S5.6(b) has been elected, dictate maximum number of popular diaphragm leakage-method of inability (or equivalent number of leakage throughout the sky chamber that has had you to definitely diaphragm) with regards to the strategies set forth into the S5.six.eight.step 1 thanks to S5.6.eight.dos.step three.
If for example the car was created to pull an automobile equipped with sky brake system, good fifty cubic inch try tank is actually attached to the buttocks likewise have line coupling
S5.six.seven.step 1.step 1 Depending on the pursuing the techniques, dictate the new tolerance amount of prominent diaphragm leakage-form of inability (otherwise similar level of leaks on the heavens chamber that has had you to diaphragm) where the latest vehicle’s parking brakes feel unreleasable. With a first reservoir system pressure of one hundred psi, the brand new engine-turned out of, zero applying of all automobile’s brakes, and you may, if for example the vehicle is designed to pull an auto equipped with sky brake system, a 50 cubic inches attempt tank linked to the have line coupling, introduce an excellent leakage-variety of incapacity of one’s preferred diaphragm (otherwise equivalent leakage throughout the sky chamber with you to diaphragm). Slow down the pressures in all of automobile’s reservoirs so you’re able to no, trigger the fresh system and invite it so you’re able to idle, and invite brand new pressures throughout the vehicle’s reservoirs to increase until they balance or before the compressor close-out-of area was reached. During the time, create a release actuation of one’s vehicle parking braking system manage, and see whether or not every mechanical form referred to in S5.six.step three.dos will always be actuated and hold the parking brake software with plenty of parking retardation push to get to know minimal efficiency specified either in S5.six.step one or S5.six.2. Do this techniques that have progressively decreasing or growing profile (almost any applies) of leakages-style of diaphragm failures or comparable leakage, to select the lowest quantity of popular diaphragm leakage-method of incapacity (otherwise comparable quantity of leakages about sky chamber which includes one diaphragm) from which most of the physical form regarded for the S5.6.3.dos continue to be actuated and you will contain the parking braking system applications with enough parking retardation forces to meet up with minimal overall performance given either in S5.six.step one or S5.six.2.
S5.6.eight.1.dos Within quantity of preferred diaphragm leakages-variety of failure (or equivalent number of leakages regarding air chamber that has one diaphragm) determined from inside the S5.six.7.1.1, and making use of another procedure, dictate the new endurance limit reservoir rate (for the psi for each minute). With an initial reservoir program stress from 100 psi, the fresh new engine-turned off, zero applying of the vehicle’s brake system and you may, if your car was created to pull a car or truck equipped with air brakes, a great fifty cubic inches shot reservoir connected to the also provide range coupling, make an application actuation of one’s vehicle parking brake handle. Dictate maximum tank leaks rate (inside the psi each minute), which is the restriction rate off reduction of air tension out of the automobile’s reservoirs that abilities after that parking brake app.