(a) To own a trailer made to pull various other car armed with heavens brake system, the pressure differential within manage line enter in coupling and you will a great 50-cubic-inches try reservoir connected to the control range production coupling shall perhaps not exceed the prices specified during the step three.5(a) (1), (2), and (3) underneath the conditions given inside the step 3.5(b) (1) owing to (4):
S5
(1) step 1 psi after all enter in demands comparable to or higher than 5 psi, not greater than 20 psi;
(2) 2 psi anyway enter in challenges equivalent to or greater than 20 psi although not higher than forty psi; and
(2) When sky try applied to otherwise put-out on the manage range type in coupling by using the truck try rig found into the Profile step 1;
Having reason for the needs of 4
(3) Which have a predetermined orifice consisting of a great 0.0180 inch diameter opening (zero. 77 drill bit) from inside the an excellent 0.032 inch thick disc installed on the manage line between the trailer decide to try rig coupling and also the automobile’s manage line enter in coupling; and you will
(4) Doing work this new truck sample rig in the same way and you may less than a similar conditions as it is operated throughout testing to measure braking system actuation and you may launch times, due to the fact given in 3.step three and step 3.cuatro, apart from installing the brand new orifice from the manage line so you can limitation airflow rate. Read more