S6.dos.4 The temperature of every braking system is measured because of the an individual plug-method of thermocouple hung in the middle of the lining facial skin away from more heavily stacked shoe or pad just like the found in the Figure 2.
S6.2.5 The rate from braking system drum or disk rotation with the a great dynamometer comparable to the speed of rotation towards a vehicle during the confirmed speed are computed by the of course a tire distance equal for the fixed stacked distance specified from the tire company.
Effective estimated luminous contact lens area implies that part of the projection towards the a plane perpendicular toward light axis of these portion of white-giving off body one delivers white towards the photometric try trend, and won’t become mounting hole employers, response reflector city, beads otherwise wheels which can glow otherwise write brief aspects of enhanced strength down seriously to uncontrolled white away from short elements ( 1/2 training distance within the test point).
step 1.step one Air compressor. An atmosphere compressor from adequate power to increase sky tension within the the supply and provider reservoirs out-of 85 psi so you can 100 psi if engine was working at vehicles maker’s limit needed roentgen.p.meters. within this an occasion, in the seconds, dependent on brand new quotient (Genuine reservoir strength ? 25)/Requisite tank ability.
Recite the procedure half a dozen minutes, enhancing the braking system chamber heavens stress of the 10 psi anytime
(b) For every single vehicle tractor are built into otherwise once , and each unmarried device automobile are built to the otherwise immediately after , that’s equipped so you’re able to pull various other sky- braked vehicle, is going to be armed with an electric circuit that is able to transmitting a breakdown rule from the antilock brakes(s) on a single or higher towed auto(s) (e.grams., trailer(s) and you will dolly(ies)) for the truck Stomach dysfunction lamp regarding the taxi of the towing vehicle, and you can will have the opportinity for connection associated with electric routine on towed automobile. For every for example truck tractor and solitary tool auto shall even be equipped with a sign lamp, p needed in step one.six.2(a), climbed before plus in obvious look at the driver, that’s triggered when the breakdown laws routine explained significantly more than obtains a rule proving an abs breakdown using one or even more towed vehicle(s). Brand new sign light shall are triggered provided an abdominal muscles breakdown laws from 1 or more towed car(s) is present, once the ignition (start) key is in the “on” (“run”) standing, if the engine is actually running. Brand new sign light shall even be activated because a of light setting after ignition try considered new “on” (“run”) condition. Brand new indication light are going to be deactivated at the conclusion of the brand new look at away from light mode unless a truck Stomach malfunction rule was expose.
S5
(a) And the standards away from dos.3.dos, for every truck and you will trailer converter dolly shall be equipped with an enthusiastic outside antilock description indicator light that suits the needs of 2.3.3 (b) courtesy (d).
step three.step one Ending point – trucks and you may buses. When stopped half dozen minutes for every blend of auto type of, pounds, and you may rates specified in 3.step one.1, regarding the series given for the Table I, for each and every truck tractor are made with the otherwise immediately following March 1, 1997, each single equipment auto are designed towards otherwise shortly after February 1, 1998, should take a look at the very least once within the not more than the distance specified from inside the Dining table II, mentioned about area at which movement of your own services braking system control begins, without any area of the car leaving the new road, and with wheel lockup permitted just below:
(b) To own automobile made to pull another automobile equipped with sky brake system, pressure regarding fifty-cubic-inch try tank labeled within the step 3.4.1(a) shall, when counted regarding the basic way of the services braking system handle, slide in order to 5 psi in only 0.75 mere seconds in the case of vehicles and you may busses, step one.10 mere seconds regarding truck converter dollies, and you can step one.00 moments in the example of trailers besides trailer converter dollies.
cuatro.step 1.step 1 Immediately following burnishing the brand new brake pursuant to help you S6.dos.six, keep up with the braking system set up on the inertia dynamometer. That have an initial braking system heat anywhere between 125 °F. and you will 2 hundred °F., carry out a halt off 50 m.p.h., keeping brake chamber sky tension from the a constant 20 psi. Gauge the mediocre torque exerted because of the braking system ever since the specified air stress is actually hit until the braking system ends and separate from the static piled tire radius given by the tire name brand to find the retardation push. After each and every end, become the newest braking system instrument or disk before temperatures of your brake falls to anywhere between 125 °F. and you can two hundred °F.
(a) But as the provided during the 6(b) and you may six(c), each vehicles except that a truck converter dolly should keeps a beneficial parking brake system one according to the conditions away from S6.step one meets the requirements of:
6.step 3.cuatro New vehicle parking brake chamber demands having 6.step three.step one and you will 6.3.dos decided below. To own vehicles and busses, having a primary tank program pressure off one hundred psi and you will, in the event the built to pull a car or truck armed with sky brakes, having a beneficial 50 cubic inches test tank connected to the likewise have line coupling, any single leakages type failure, in any almost every other brakes, out of a member made to incorporate compressed-air or brake water (consistent with the parenthetical terms given in six.step three.1), is lead on the brakes. The vehicle parking braking system control are actuated while the demands on the automobile’s vehicle parking braking system spaces was counted three moments upcoming actuation is established. Having trailers, towards the also have range initially pressurized so you’re able to one hundred psi utilizing the also provide range part of the truck take to rig (Shape step 1) and you can, if the designed to tow a motor vehicle equipped with air brake system, having a great fifty cubic inches test tank attached to the butt likewise have range coupling, one solitary leaks type inability, in just about any almost every other brakes, out of an associate made to incorporate compressed air otherwise braking system water (similar to the parenthetical words given from inside the 6.step three.1), is introduced from the brakes. The leading supply range coupling is ventilated to the ambiance and you can new pressures in the automobile’s vehicle parking braking system chambers is actually measured around three seconds then venting is set up.
six.six.4 To own trailers, that have initial standards as given when you look at the 6.six.5, the brand new vehicle parking brake system will be ready conference the minimum abilities specified in a choice of six.1 or 6.dos, having people unmarried leakages-particular inability, in virtually any almost every other brakes, from a member designed to include compressed-air or brake liquid (similar to the parenthetical statement specified for the six.step three.1), after the exam sequence specified for the 6.6.six.
9 Finally review. Inspect this service membership brakes towards the position of modifications and you can into the braking system sign display screen relative to step 1.8 and dos.dos.
S6.step 1.10 From inside the an examination besides a fixed vehicle parking attempt, a truck tractor was checked at its GVWR from the coupling they so you can an enthusiastic unbraked flatbed semi-trailer (hereafter, manage trailer) due to the fact given in the S6.step one.ten.2 so you’re able to S6.step 1.10.cuatro.
S6.2.3 Air during the ambient Grand Rapids local hookup climate is brought evenly and you can continuously more this new braking system drum or disc from the an acceleration away from dos,2 hundred foot each minute.
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