step one.ten.2 The middle of the law of gravity level of your own ballast towards stacked manage truck is lower than 24 ins above the top of the tractor’s fifth wheel.
step 1.10.step three The handle truck have a single shaft having a good GAWR off 18,100000 weight and you will a length, counted regarding the transverse centerline of axle on centerline of one’s kingpin, regarding 258 ±6 in.
step 1.10.cuatro The manage truck are piled so that the shaft is actually stacked on cuatro,five hundred lbs together with tractor are stacked to help you its GVWR, piled over the kingpin just, toward tractor’s fifth controls modified so the stream towards the for each shaft measured on tire-ground software try most nearly proportional on the axles’ particular GAWRs, versus surpassing the new GAWR of tractor’s shaft or axles otherwise manage trailer’s axle.
step 1.eleven Unique drive requirements. A vehicle equipped with an enthusiastic interlocking axle system otherwise a front side controls drive program that’s involved and you can disengaged because of the driver was checked-out into the system disengaged.
1.12 Liftable axles. A car having an excellent liftable axle is checked out during the GVWR with the new liftable shaft off at unloaded vehicles lbs towards the liftable shaft up.
Toward conditions off S5.3.3.step 1 and you will S5.3.4.1, the stress from the trailer test rig tank are initially place at 100 psi to have actuation examination and 95 psi to possess release testing.
1.fourteen Within the evaluation this new crisis brake off pulling auto less than S5.eight.3(a), the newest hose pipe(s) is vented with the ambiance any moment no less than 1 2nd and never more than one-minute until the emergency stop starts, since car is actually moving within rates where new end is to be made and you will any guidelines control into towing vehicle security method is throughout the reputation to supply air and you may brake control signals towards auto getting towed. No braking system software program is made from enough time the line(s) try vented before the crisis end starts with no guide procedure of your own parking brakes otherwise pulling car safety system happen since the fresh range(s) are ventilated through to the stop is accomplished.
step one.fifteen 1st braking system temperatures. Unless of course if you don’t specified, the first brake climate is not less than 150 °F and not more than 200 °F.
S6
The latest braking system climate is counted from the connect-variety of thermocouples strung from the estimate center of facing length and width of the very most heavily piled shoe otherwise disk pad, that for every single brake, as found when you look at the Figure dos. Another thermocouple should be installed from the a range out-of .080 inch and you may discover contained in this step one inch circumferentially of thermocouple strung from the .040 inch depth. To have cardiovascular system grooved boots otherwise shields, thermocouples is strung in one single-8th out-of an Gilbert escort inch to 1-one-fourth out of an inch of the groove and also as near to the center that one can.
A moment thermocouple tends to be strung early in the latest try sequence should your lining wear is anticipated to reach a beneficial point inducing the very first thermocouple to contact the brand new rubbing facial skin away from a guitar otherwise rotor
1.17 Selection of compliance alternatives. In which company options are given, the producer will discover option by the time it certifies the vehicle and could maybe not after that come across a different option for the vehicle. Each name brand shall, abreast of request regarding the National Road Visitors Security Administration , promote factual statements about which of your conformity choice it’s selected getting a certain vehicles or build/model.
dos.1 New dynamometer inertia each wheel is the same as the fresh new stream with the controls to the axle piled so you’re able to its GAWR. To have a vehicle which have extra GAWRs given for procedure at the smaller speed, new GAWR put would be the fact specified for a speed away from fifty miles per hour, otherwise, at accessibility to the maker, any rate higher than fifty mph.