TS 29.4 Hubs and Drums/DiscsReplace

TS 29.4集线器和鼓/光盘<br>更换车轮轴承密封件应在可更换的耐磨表面运行，或是整体磨损表面密封的<br>设计。上操作时车轮轴承和轮毂密封件和单元化的毂组件不得泄漏或泣润滑剂<br>的初始制造商的保修的持续时间的设计操作简档。<br>该制动系统的材料和设计的选择应吸收和耗散热量很快使得热<br>制动运行期间产生不釉制动衬片。<br>TS 29.5停车场/紧急制动<br>TS 30.气动系统<br>TS 30.1通用<br>总线空气系统应操作空气供电配件，并用备用容量的制动系统。新<br>上划线计所指示的总线不得在一段15分钟的时间内泄漏下跌超过5psi的。<br>空气制动器<br>服务制动器应通过一个压缩空气系统进行控制和致动。力来激活刹车踏板控制<br>应在总线减速率的基本上线性的函数并在一个点7应不超过75磅。上面的<br>踏板的脚跟点以获得最大制动。脚跟点是驾驶员的脚后跟的位置时，他或她的<br>脚在踏板上休息平坦，脚跟接触踏板的地板或脚跟垫。对于ABS的ECU <br>系统应受到保护，但在可访问的位置，以便为便于服务。<br>总制动作用力应以这样的比例所有车轮之间分配，以确保相等的摩擦材料的磨损<br>在所有轮的位置速率。制造商应通过提供热力的副本证明符合<br>根据要求制动平衡测试。<br>鼓式制动器<br>总线应配备制动鼓。制动鼓应允许用于加工按照制造商的超大衬里

TS 29.4 Hubs and Drums/Discs<br>Replaceable wheel bearing seals shall run on replaceable wear surfaces or be of an integral wear surface sealed<br>design. Wheel bearing and hub seals and unitized hub assemblies shall not leak or weep lubricant when operating on<br>the design operating profile for the duration of the initial manufacturer's warranty.<br>The brake system material and design shall be selected to absorb and dissipate heat quickly so that the heat<br>generated during braking operation does not glaze the brake linings.<br>TS 29.5 Parking/Emergency Brake<br>TS 30. Pneumatic System<br>TS 30.1 General<br>The bus air system shall operate the air-powered accessories and the braking system with reserve capacity. New<br>buses shall not leak down more than 5psi over a 15-minute period of time as indicated on the dash gauge.<br>Air Brakes<br>Service brakes shall be controlled and actuated by a compressed air system. Force to activate the brake pedal control<br>shall be an essentially linear function of the bus deceleration rate and shall not exceed 75 lbs at a point 7 in. above the<br>heel point of the pedal to achieve maximum braking. The heel point is the location of the driver's heel when his or her<br>foot is rested flat on the pedal and the heel is touching the floor or heel pad of the pedal. The ECU for the ABS<br>system shall be protected, yet in an accessible location to allow for ease of service.<br>The total braking effort shall be distributed among all wheels in such a ratio as to ensure equal friction material wear<br>rate at all wheel locations. Manufacturer shall demonstrate compliance by providing a copy of a thermodynamic<br>brake balance test upon request.<br>Drum Brakes<br>The bus shall be equipped with brake drums. Brake drums shall allow machining for oversized linings per manufacturer's

TS 29.4轮毂和鼓/盘<br>可更换的车轮轴承密封件应在可更换的磨损表面上运行，或具有完整的磨损表面密封<br>设计。操作时，车轮轴承和轮毂密封件以及组合轮毂总成不得泄漏或渗出润滑剂<br>初始制造商保修期内的设计运行概况。<br>制动系统的材料和设计应能快速吸收和散热，以便<br>在制动操作过程中产生的不会使制动衬片上釉。<br>TS 29.5停车/紧急制动<br>30号。气动系统<br>TS 30.1概述<br>客车空气系统应能操作空气动力附件和具有备用容量的制动系统。新的<br>公共汽车在仪表板上显示的15分钟内的泄漏量不得超过5psi。<br>空气制动器<br>行车制动器应由压缩空气系统控制和驱动。启动制动踏板控制的力<br>应为客车减速率的基本线性函数，且在7英寸处不应超过75磅。高于<br>脚跟点的踏板实现最大限度的制动。脚跟点是驾驶员在驾驶时脚跟的位置<br>脚平放在踏板上，脚后跟接触到踏板的地板或脚跟垫。防抱死制动系统的电子控制单元<br>系统应受到保护，但应位于方便使用的位置。<br>总制动力应按一定比例分布在所有车轮上，以确保摩擦材料的磨损相等<br>在所有车轮位置收费。制造商应提供一份热力学的副本，以证明其符合要求<br>根据要求进行制动平衡试验。<br>鼓式制动器<br>客车应配备制动鼓。制动鼓应允许按照制造商的要求加工尺寸过大的衬片