The brand new vehicle parking braking system control is independent on the services braking system control

Thirty mere seconds shortly after such as for example actuation, a release actuation of vehicle parking brake handle is created

six.4 Parking braking system manage – vehicles and you will busses. They would be operable from the one resting throughout the regular riding standing. Brand new manage will likely be understood in a way that specifies the new type handle operation. The newest parking braking system handle shall control the latest parking brakes of the vehicles and of any sky braked automobile that it’s customized so you can tow.

6.5.1 To possess trucks and you can vehicles, having very first criteria because given in the 6.5.dos, all of the time after an application actuation of one’s parking brake control, with people next number of pressure, otherwise blend of levels of tension, on reservoirs of any of your car’s braking system options, zero lack of vehicle parking braking system retardation force should originate from good launch actuation of one’s parking braking system manage unless of course the latest parking brake system have the capability, shortly after instance release, of being reapplied for a price meeting the minimum performance given either in six.step 1 or 6.dos. This needs will be came across each other that have and you may without any engine into the, with and you may without unmarried leaks-sorts of failure, in every most other brake system, from a member made to consist of compressed air otherwise brake water (consistent with the parenthetical terminology given inside 6.step three.1).

6.5.2 The initial requirements having six.5.1 are listed below: The new tank system pressure try 100 psi. In case the vehicle is designed to pull a car or truck equipped with sky brake system, a fifty cubic inch sample tank are linked to the also have range coupling.


six.5.step 3 For trailers, that have first criteria as the given into the six.5.4, at all times immediately following actuation of vehicle parking brakes from the venting leading have range coupling with the surroundings, with any subsequent level of tension, or combination of levels of pressure, about reservoirs of every of your vehicle’s brake possibilities, this new parking brakes shall not be releasable by the repressurizing the production range utilizing the also provide range portion of the truck sample rig (Contour step one) to almost any stress a lot more than 70 psi, unless of course this new vehicle parking brake system have the capability, just after such as discharge, regarding reapplication of the further ventilation of one’s front supply range coupling with the surroundings, at a consistent level appointment minimal results specified in a choice of 6.step one or 6.2. This criteria should be came across both that have and without having any unmarried leakage-kind of failure, in virtually any other brake system, out-of an associate made to have compressed-air otherwise braking system liquid (similar to the parenthetical words given when you look at the 6.step 3.1).

six.5.4 The initial criteria getting six.5.3 are as follows: The new reservoir system and offer line are pressurized to 100 psi, with the likewise have line part of the trailer try rig (Figure 1). In case your vehicle was designed to pull an automible equipped with air brake system, good 50 cubic inches shot reservoir try linked to the butt supply range coupling.

six.6.step 1 Having autos and you can buses, having initially requirements once the given in six.6.2, the new vehicle parking brake system shall be effective at meeting the minimum results given in both six.step one or six.2, that have one solitary leakage-form of incapacity, in every almost every other brake system, of a part built to have compressed-air or braking system liquid (consistent with the parenthetical keywords specified during the six.step three.1) at the end of the test series specified inside the 6.6.step three.

six.6.2 The first standards having 6.six.1 are listed below: New engine is found on. The fresh new reservoir program stress try 100 psi. In case the car is made to tow an automobile armed with heavens brake system, a good fifty cubic inch try tank is actually linked to the also have range coupling.

six.6.step three The test sequence to own 6.six.step one is just as pursue: New engine is turned-off. People solitary leakage sort of failure, in just about any other brakes, out-of a member made to include compressed air or brake water (similar to the parenthetical statement given within the 6.step 3.1), is then brought regarding brakes. A software actuation of the vehicle parking brake manage is then made. Thirty moments following launch actuation, a final application actuation of parking braking system control is created.