The air hoses and quickdisconnects are colorcoded to avoid wrong connections. Reading air brake diagrams tp2006 september 2001 4 part i. Requirements for air brake endorsement must complete an air brake. From the first concept of using air as a braking force, years of development and. It will also help you identify air system components and understand how they relate to fmvss121. The systems presented in this manual are intended for illustrative purposes only and are not. Fault finding solving your air brake problems part 1 jmr. The components of an air brake system 12 compressor and governor 12 reservoirs 14 air dryer 15 safety valve 16 foot valve 16 brake chambers, slack adjusters and brake lining 16 wedge brakes 20 disc brakes 21 air overhydraulic brake systems 21 air actuatedhydraulic brake system 21 air boosthydraulic brake system 22. Bendix commercial vehicle systems document library. The workshop manual offers detailed stepbystep instructions, illustrations, specifications and diagrams. In ontario, most large commercial vehicles are equipped with an air brake system.
Piston the piston is the heart of the control valve. When doing service work on a vehicle system or part, check for a valid service bulletin for the latest information on the subject. However, even though truck air brake system pressures are 100 p. The parts of these systems are discussed in greater detail below. Bendix air brake system troubleshooting 1800 air brake 18002472725 attend bendix brake school or visit brake for air brake system and product training. The wheel hub and brake assembly components should be thoroughly wetted to suppress dust before the brake shoes or brake pads are removed. Your written air brake knowledge test can also be scheduled.
To adjust manual slack adjusters, the operator must hold an e brake endorsement. Advanced troubleshooting guide for air brake compressors. These guides and manuals are also an excellent way to learn more about your vehicles suspension, steering and driveline for everything from. Parts of an air brake diagram the design of any air brake valve is more easily understood by recognizing some major components and parts. Air brake endorsement permits the holder to drive vehicles equipped with air brakes in class of vehicle for which the driver is licenced. The braking system must be tested and the ad justment checked before placing the vehicle into service. The emergency brake system uses parts of the service and parking brake systems to stop the vehicle in the event of a brake system failure. If you want to pull a trailer with air brakes, you also need to read section 6, combination vehicles. The air compressor is connected to the engine through gears or a vbelt. Level ground, chock the wheels, and turn off the parking brake. Maintenance will be needed the pressure mounts at 150 psi. Learn about brakes and braking, components of an air brake, how the basic system works, trailer systems, dual air systems and pretrip inspection. This twelvesection handbook provides an introduction to the use and operation of bendix air brake systems and devices.
The system usually consists of an air compressor, governor, discharge line, air dryer, and service reservoir. This maintenance manual consists of instruction and service data sheets and provides complete information on most air brake system components. Applied stroke method service brake application 70 brake adjustment indicators 70 brake adjustment manual slack adjuster 71. View and download honda gl1800 service manual online. If you have a truck or other large vehicle, every minute it is in the shop can mean a loss of profit for you. As the brake pedal is pressed harder, the valve opens farther, delivering higher air pressure to the service brakes and increasing the braking force at the wheels. Air brake system parts dual air brake systems inspecting air brakes using air brakes there are many parts to an air brake system. A bad master cylinder can introduce air into the lines, as can a failure at a caliper or wheel cylinder. With the introduction of spring brakes, anticompounding and 121 air brake systems, because a valve is leaking air out of its exhaust, does not mean the valve is at fault. If you want to drive a truck or bus with air brakes, or pull a trailer with air brakes, you need to read this section. The systems described in this workbook are generic air brake systems. The emergency brake system uses parts of the service and parking brake systems to stop the vehicle in a brake system failure.
If these pressure settings are not set correctly, it is possible to be able to release the park brake and the trailer brakes, without having enough air pressure in the service brake system to apply the vehicles service brakes. The air brake handbook for over 60 years, bendix commercial vehicle systems company has been a leading supplier of bendix air braking systems to the heavy trucking industry. The air compressor governor controls when the compressor will pump air into the storage. All pre121 or ne w 121 trailers have a parkingemergency system and normally used service brake system. It also includes an air overhydraulic brake system. Maximum service system air pressure allowed by government. When the brakes are applied, air is delivered through the foot valve to the service brake chambers fig. The professional driver never takes the brakes for granted. The air brake charging system supplies the compressed air for the braking system as well as other air accessories for the vehicle. Instructions for manual release are usually imprinted on the housing of. The study of this manual, together with practical instruction, is recommended for a driver who is preparing for the air brake examination. Air brake manual government of newfoundland and labrador. Service service literature maintenance and repair manual. When youre ready to book your written air brake knowledge test or practical air brake demonstration you can call 1844tlk2sgi 18448552744, press two at the prompt or request the exam office, have them book it and pay for it then by credit card.
Freightliner rv chassis workshop manual mc, xc, vcl series. The air compressor pumps air into the air storage tanks reservoirs. To check the free play of manual slack adjusters on scam brakes,you should park on. You must have an air brake endorsement on your drivers licence to drive these vehicles. Volvo a30c,a30d,a30e,a30f articulated dump truck service repair manual.
Use this study manual to prepare for tests to get a yukon drivers license for heavy truck, bus or taxi. Literature maintenance manuals wabco north america. The air brake manual has been prepared by manitoba public insurance to assist drivers in understanding the basic operation and function of an air brake system. When the servicing has been completed, it is essential that you road test the vehicle and try out the brakes.
In addition to information on how each device operates, the sheets contain information on. Cdl air brake test air brake practice test cdl knowledge. If the problem is neither air system is working, the fault may be mechanical. Note, not all valves have all the components shown and described in this booklet. The service bulletins manual is available only to dealers. A more detailed look at the air braking system, in particular with this video at the air brake relay. Brake hydraulics are a sealed system, so there should not be air in the lines, but if after service you have a sponge pedal that is the most likely cause.
The air brake handbook, onepage introduction, air supply, normal braking, vehicle parking, antilock braking systems, antilock traction control, electronic stability program, roll stability program, emergency braking, vision systems, the charging system, air compressor, governor, air dryer, reservoirs, safety valves, single check valves, low pressure indicators, low. Relays are fitted to an air braking system for larger vehicles to speed up the application and. This professional workshop manual contains service and maintenance procedures for the freightliner rv mc, mcl, xc, xcf, xcl, xcm, xcp, xcr, xcs or vcl chassis. Air brakes, chapter 7, driving commercial vehicles ritchies training.
Modern air brake system combine three different systems. Click on the meritor logo on this page to go to service notes. An air brake system uses air as a way to transmit pressure from the drivers control to the service brake. If a spring brake is leaking from the the spring brake to the service brake side, that air will travel. If a spring brake is leaking from the the spring brake to the service brake side, that air will travel back up the service line and out the exhaust of the next valve back. The parking system works from the emergency supply line. A reliable brake repair manual will allow you to learn more about your vehicles brake system and how to repair it efficiently, saving you time and money on costly or unnecessary repairs at a shop. Within these systems, there are many main parts with which one needs to be familiar. Click on the top of any page to return to the contents page.
Printed on recycled paper checklist 2 if there is excessive leakage in the supply side of the pneumatic system, one or more. Service manual section blockage in air lines preventing air chamber from exhausting. Page 1 of the air brakes test study guide for the cdl. The purpose of this handbook is to introduce you to the knowledge and skills you need to drive a vehicle with air brakes in a safe and lawful manner. The air compressor pumps air into the storage tanks. Page 33 group 38 instrumentation, vnl, vnm design and function front and rear brake air pressure the air pressure gauges are mechanical gauges. Rather than spending time and money on a mechanic, follow these easy steps to repair your air brakes on your own. To be eligible for cdl air brake test, you should understand how air is maintained and the constant pressure to drive under. For official purposes, please refer to the drivers and vehicles act and the highway traffic act and regulations. They are attached to their air systems by a hose going into a quickdisconnect. You should have an understanding of the parking brake.
Truck systems air supply secondary service primary service parking anticompounding emergency prior to 3198 emergency after 3198 tractor. Additionally, the included maintenance manual covers routine servicing such. The components of an air brake system 14 compressor and governor 14 reservoirs 16 air dryer 17 safety valve 18 foot valve 18 brake chambers, slack adjusters and brake lining 18 wedge brakes 22 disc brakes 23 air overhydraulic brake systems 23 section summary questions 26 section three how the basic system works 27 basic air brake system 28. Considerable force is available for braking since the operating pressure is as high as 110 pounds per square inch.
1418 372 423 1150 1279 1146 889 153 1311 1393 223 47 47 515 955 480 513 817 1264 813 1395 855 251 616 221 421 271 1249 1265 466 244 373