(a) To have a trailer built to tow other auto armed with sky brake system, pressure differential within manage range type in coupling and you can a great 50-cubic-inch sample reservoir connected to the manage line productivity coupling will maybe not meet or exceed the values specified from inside the 3.5(a) (1), (2), and you can (3) within the standards specified during the step three.5(b) (1) because of (4):
(1) step 1 psi after all type in challenges equal to or greater than 5 psi, however higher than 20 psi;
(2) dos psi at all type in demands equal to otherwise higher than 20 psi although not higher than forty psi; and you will
(2) When air try put on or released in the control line input coupling utilizing the trailer shot rig found within the Contour step one;