The newest a number of decelerations would be used below:

cuatro.2 Braking system power. Whenever attached with an inertia dynamometer, for each braking system will be able to make 10 consecutive decelerations on the typical rates off 9 f.p.s.p.s. away from 50 yards.p.h. so you can 15 yards.p.h., during the equivalent periods out of 72 mere seconds, and you may are going to be effective at decelerating to help you a halt out-of 20 meters.p.h. from the the typical deceleration price out-of fourteen f.p.s.p.s. one minute pursuing the 10th deceleration.

4.2.1 Having an initial braking system temperatures between 150 °F. and you may 200 °F. for the very first braking system app, in addition to musical instrument otherwise disk spinning on a performance equal to fifty meters.p.h., incorporate the fresh new brake and you will reduce from the the average deceleration speed of 9 f so you’re able to fifteen yards.p.h. Up on getting fifteen meters.p.h., speeds so you can 50 meters.p.h. thereby applying the fresh new brake to possess an extra day 72 seconds immediately following the start of the initial application. Repeat the course up until 10 decelerations have been made. This service membership line heavens tension should perhaps not exceed a hundred psi throughout the any deceleration.

cuatro.dos.2 The second following stop of your last deceleration requisite of the 4.dos.step 1 and with the drum otherwise disk rotating from the a speed from 20 meters.p.h., slow down so you’re able to a halt on the average deceleration speed regarding 14 f.p.s.p.s.

Except since given into the 4

4.3 Braking system recovery. 3(a) and you will (b), creating a couple of moments immediately following completing this new testing necessary for cuatro.dos, an effective vehicle’s braking system is going to be able to make 20 consecutive ends out of 29 miles per hour on the typical deceleration price out-of twelve f.p.s.p.s., during the equal menstruation of 1 moment mentioned right away of for each brake application. This service membership line heavens stress needed seriously to getting a rate of 12 f.p.s.p.s. are only 85 lb/in two , rather than below 20lb/in 2 to possess a braking system not susceptible to brand new power over an enthusiastic antilock program, otherwise twelve pound/in two to possess a braking system subject to the latest command over an enthusiastic antilock system.

(b) Notwithstanding cuatro.step 3, none side shaft brake off a shuttle otherwise a trailer most other than simply a trailer-tractor was susceptible to the necessity established into the 4.step three prohibiting this service membership range air tension away from being lower than 20 pound/in 2 to possess a braking system maybe not at the mercy of the power over a keen antilock program otherwise twelve lb/in 2 to possess a brake susceptible to the latest command over an antilock program.

5.step one Antilock system dysfunction. On the a truck tractor are built towards the otherwise just after March step 1, 1997, which is armed with an enthusiastic antilock brakes and you can a single equipment vehicles are produced to your or after March step 1, 1998, which is equipped with an enthusiastic antilock brakes, a malfunction one has an effect on the brand new age group otherwise sign off effect otherwise manage indicators of every a portion of the antilock system should perhaps not improve actuation and you will launch days of this service membership brakes.


5.2 Antilock system power – trailers. With the a trailer (and additionally a trailer converter dolly) are created into the or immediately after February 1, 1998, that is equipped with an enthusiastic antilock program that needs electrical power for procedure, the advantage are obtained from the newest pulling vehicles using that or maybe more electronic circuits which provide persisted power whenever the pushed car’s ignition (start) button is in the “on” (“run”) standing. This new antilock program should instantly receive strength regarding the stoplamp circuit, in case the first routine otherwise circuits commonly doing work. For every single trailer (plus a truck converter dolly) are built into the otherwise once February 1, 1998, which is provided in order to pull several other sky-braked vehicle are armed with no less than one circuits and therefore give persisted ability to the brand new antilock program to your automobile(s) they tows. Such as for example circuits will be adequate to enable the antilock system with the for each towed car become totally operable.

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