This new a number of decelerations should be held as follows:

This new a number of decelerations should be held as follows:

4.2 Brake fuel. Whenever attached to a keen inertia dynamometer, for every braking system is going to be able to make ten successive decelerations in the the common price of 9 f.p.s.p.s. of 50 yards.p.h. to 15 yards.p.h., on equal periods out-of 72 seconds, and you may is ready decelerating to a stop away from 20 yards.p.h. on the typical deceleration rate from 14 f.p.s.p.s. 1 minute following the 10th deceleration.

cuatro.2.1 With an initial braking system temperature between 150 °F. and you will 200 °F. towards very first brake application, and the instrument otherwise disc rotating in the a performance equal to 50 meters.p.h., incorporate new braking system and you will slow down in the the typical deceleration rates from nine f.p.s.p.s. in order to 15 m.p.h. Through to getting fifteen m.p.h., speed so you can 50 meters.p.h. and apply the fresh new brake for the next day 72 seconds once the start of the original software. Repeat new cycle until 10 decelerations were made. This service membership line sky tension shall perhaps not meet or exceed 100 psi during one deceleration.

4.dos.2 An additional after the prevent of history deceleration needed from the cuatro.dos.1 and with the guitar or disk rotating during the a speeds out of 20 yards.p.h., impede in order to a stop on the common deceleration speed out-of fourteen f.p.s.p.s.

Except due to the fact offered in the 4

cuatro.step 3 Braking system healing. 3(a) and (b), creating a couple of times immediately after doing the new screening necessary for cuatro.2, good car’s brake is going to be able to make 20 successive stops out of 31 mph from the an average deceleration rate away from a dozen f.p.s.p.s., during the equivalent times of just one second counted from the start out of per braking system application. The service line air stress necessary to getting a performance out of 12 f.p.s.p.s. is going to be not more than 85 lb/in 2 , and never less than 20lb/in two getting a brake perhaps not at the mercy of the latest control of a keen antilock system, or twelve pound/in 2 to own a brake subject to the latest control of an antilock program.

(b) Despite cuatro.step 3, none top axle brake out-of a shuttle or a trailer most other than just a trailer-tractor is subject to the necessity set forth within the 4.step 3 prohibiting the service line heavens pressure of getting less than 20 lb/in two having a brake maybe not subject to the brand new command over an antilock system otherwise 12 lb/in two for a brake at the mercy of the fresh new control of an antilock system.

5.step 1 Antilock system dysfunction. For the a trailer tractor are designed towards the otherwise shortly after February step 1, 1997, which is equipped with a keen antilock brake system and you can just one equipment vehicles are available to your or just after February 1, 1998, that’s armed with a keen antilock brake system, a breakdown one to impacts new age bracket otherwise signal from reaction otherwise handle signals of every part of the antilock system will perhaps not improve the actuation and discharge days of the service brakes.


5.dos Antilock program energy – trailers. On a truck (in addition to a trailer converter dolly) manufactured for the otherwise immediately following February step one, 1998, which is armed with an enthusiastic antilock program that requires energy having procedure, the benefit is obtained from the newest towing vehicle as a result of you to definitely or more electronic circuits which give carried on power as soon as the pushed automobile’s ignition (start) option is in the “on” (“run”) updates. New antilock program should automatically located stamina on stoplamp routine, when your primary circuit otherwise circuits are not working. Per trailer (as well as a truck converter dolly) were created into otherwise immediately after March 1, 1998, that’s furnished so you can tow several other sky-braked vehicle is armed with a minumum of one circuits and that bring carried on power to the fresh antilock program to your vehicles(s) they tows. Such as for instance circuits is adequate to enable the antilock system toward for every single towed automobile as fully operable.

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