2.4 The heat of any braking system was measured because of the just one plug-sorts of thermocouple hung in the lining body off the absolute most heavily loaded shoe otherwise mat because the found when you look at the Profile dos.
dos.5 The rate out of braking system guitar or disc rotation with the an excellent dynamometer comparable to the speed off rotation on the a car in the a given rates is calculated from the while a tire distance equivalent for the static stacked radius given by tire company.
Active projected luminous contact town ensures that the main projection to the a plane perpendicular for the lamp axis of these piece of light-giving off epidermis that delivers white toward photometric decide to try development, and does not were setting up opening bosses, response reflector area, beans or rims which can sparkle or generate small regions of enhanced power right down to uncontrolled light away from small section ( 1/2 studies distance in the test area).
S5.step one.1 Sky compressor. An atmosphere compressor away from enough power to raise air tension during the the supply and solution reservoirs of 85 psi so you can 100 psi if the system is actually functioning from the vehicle maker’s maximum necessary r.p.m. inside an occasion, within the seconds, determined by the quotient (Actual tank potential ? 25)/Called for reservoir capabilities.
(b) For each truck tractor are available towards the otherwise once , and every single product vehicle are designed towards or after , that is furnished to pull other air- braked automobile, will likely be armed with a power circuit that’s with the capacity of sending a breakdown laws regarding antilock brake system(s) on one or even more towed auto(s) (elizabeth.g., trailer(s) and you may dolly(ies)) toward trailer Stomach malfunction light in the cab of your own pulling auto, and you can shall feel the means for connection for the electric routine for the towed automobile. Each particularly vehicle tractor and you may unmarried device car shall be also armed with indicative lamp, p needed in S5.1.six.2(a), climbed in front of as well as in obvious look at brand new driver, that is triggered as soon as the malfunction signal circuit revealed significantly more than receives a signal showing an abdominal muscles dysfunction on one or maybe more towed vehicle(s). The newest indication lamp shall will always be activated as long as an abdominal muscles breakdown rule from or even more towed car(s) is available, whenever ignition (start) switch is in the “on” (“run”) standing, if the engine is running. The brand new sign light will even be triggered since a out of lamp setting whenever the ignition was considered the new “on” (“run”) standing.
(a) Also the requirements off S126.96.36.199, for each trailer and you may truck converter dolly are going to be equipped with a keen additional antilock malfunction indicator light that fits the requirements of S5.2.step three.step three (b) using (d).
S5.3.step 1 Finishing length – vehicles and busses. When prevented six times for every single blend of automobile kind of, lbs, and you will price specified from inside the S5.3.step one.step one, from the succession given during the Dining table I, per truck tractor are built with the otherwise shortly after March step 1, 1997, and every solitary tool car were created for the or immediately following February step one, 1998, will visit minimum once inside not more than the length given during the Desk II, counted in the area where movement of solution brake manage starts, without any a portion of the auto making brand new highway, in accordance with controls lockup allowed merely as follows:
(b) To possess car made to tow some other automobile armed with air brakes, the pressure about fifty-cubic-inch take to reservoir described within the S5.step 3.4.1(a) shall, when mentioned about first path of the solution braking system handle, slip in order to 5 psi into the not more than 0.75 moments in the example of cars and you may buses, 1.ten mere seconds regarding truck converter dollies, and you can step 1.00 moments in the example of trailers except that truck converter dollies.
S5.cuatro.step one.step one Just after burnishing the new braking system pursuant in order to dos.6, take care of the braking system set-up towards inertia dynamometer. That have a primary brake temperature anywhere between 125 °F. and two hundred °F., conduct a stop out-of fifty m.p.h., keeping braking system chamber air pressure on a constant 20 psi. Assess the average torque exerted by braking system from the time the desired sky tension try reached up until the brake concludes and you can split because of the static stacked tire distance specified from the tire brand name to search for the retardation push. Recite the method half a dozen minutes, improving the brake chamber air stress from the 10 psi whenever. After each prevent, change the new brake drum or disc up until the temperature of the brake drops to help you anywhere between 125 °F. and you will 200 °F.
(a) But just like the provided for the S5.6(b) and you can S5.6(c), each car except that a truck converter dolly will have an excellent parking brakes that under the conditions of 1 suits the criteria of:
S5.6.step three.4 The vehicle parking braking system chamber demands having S5.6.step three.1 and you will S5.six.3.dos decided below. Getting vehicles and you can busses, which have an initial reservoir program pressure off one hundred psi and you may, in the event the made to pull a vehicle armed with air brake system, having an excellent fifty cubic inch sample reservoir connected to the supply range coupling, people solitary leaks sorts of inability, in almost any other brakes, out of a member built to consist of compressed-air or brake liquid (consistent with the parenthetical statement specified when you look at the S188.8.131.52), is actually put regarding brake system. The fresh new vehicle parking brake control is actually actuated plus the demands regarding the automobile’s vehicle parking braking system chambers is actually counted three seconds following actuation is initiated. To have trailers, on also provide line first pressurized so you can one hundred psi utilising the also have line portion of the trailer test rig (Shape step 1) and you may, if built to tow an auto equipped with sky brakes, that have a fifty cubic inches shot tank linked to the butt also provide range coupling, one solitary leakage sort of inability, in just about any almost every other brakes, away from a member made to dating a haitian man contain compressed-air otherwise brake fluid (similar to the parenthetical terms specified in S5.six.step three.1), are produced on the brake system. The front likewise have range coupling is vented to the atmosphere and you will the fresh pressures regarding the car’s vehicle parking braking system chambers is measured about three mere seconds next ventilation is set up.
S5.6.6.cuatro To own trailers, with very first conditions due to the fact specified within the S5.6.six.5, new parking brake system might be capable of appointment the minimum performance specified either in S5.six.step one otherwise S5.6.dos, with one solitary leakages-type of incapacity, in every most other brakes, out-of a part made to have compressed-air otherwise brake fluid (similar to the parenthetical words specified within the S184.108.40.206), at the conclusion of the test series given inside S5.6.6.six.
S5.nine Final assessment. Examine the service brakes towards position off modifications and you can with the brake signal screen according to S5.step one.8 and you will S5.2.2.
New indication light should be deactivated at the end of the brand new check away from lamp mode unless of course a truck Stomach malfunction code was expose
step one.ten Into the an examination aside from a static parking take to, a truck tractor try tested in the its GVWR because of the coupling they to an unbraked flatbed partial-truck (hereafter, control truck) just like the specified in step 1.10.dos to one.ten.4.
dos.step three Sky on background climate is led uniformly and you can continuously more the new brake guitar or disc at the a velocity from 2,two hundred base per minute.