Brake System Manual

Brake System Manual

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Brake System ManualCOVID-19: Get the latest updates or take a self-assessment. JavaScript is required to view this site Ontario.ca needs JavaScript to function properly and provide you with a fast, stable experience. To have a better experience, you need to: Go to your browser's settings Enable JavaScript JavaScript est necessaire pour ce site Le site Ontario.ca exige JavaScript pour fonctionner comme il faut, avec rapidite et stabilite. Learn about the browsers we support. Vous utilisez un navigateur desuet qui n’est plus accepte par Ontario.ca. Les navigateurs desuets ne disposent pas de caracteristiques securitaires permettant d’assurer la securite de vos renseignements. En savoir plus sur les navigateurs que nous supportons. Pressing the brake pedal forces fluid out of the master cylinder along the brake pipes to the slave cylinders at the wheels; the master cylinder has a reservoir that keeps it full.The pedal can work the master cylinder directly if the servo fails or if the engine is not running. The brake pedal pushes a rod that in turn pushes the master-cylinder piston. But much more force must be exerted on the brake pedal to apply them. Such a unit can be mounted anywhere in the Pressing the brake pedal causes hydraulic pressure build up from the master cylinder, a valve opens and that triggers the vacuum servo. There may be more than one pair, or a single piston operating both pads, like a scissor mechanism, through different types of calipers - a swinging or a sliding caliper.The disc is straddled by a The pads are shaped to cover a broad sector of the disc. They have no With the brake off, both pads barely clear the disc.When the pads are nearly worn out, the leads are exposed and short-circuited by the metal disc, illuminating a warning light on the instrument panel. Its open back is covered by a stationary backplate on which there are two curved shoes carrying friction linings.http://www.awluks.pl/fck_files/breville-ultimate-bakers-oven-manual.xml

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A leading shoe has the piston at the leading edge relative to the direction in which the drum turns. Older systems have manual adjusters that need to be turned from time to time as the friction linings wear. Later brakes have Discs, with their more open construction, are much less prone to fading. A push button disengages the ratchet and frees the lever. Clearly and easily explained. I don't really have adverts here: it's funded by wonderful people buying the Car Mechanics Video Course. If you're into design, go and check them out. Headquartered in Turkey-Konya since 1981, exports to many countries worldwide and has a customer base that includes OEM (in Turkey ) OES and prime Aftermarket clients.GTS production plant is established in 6000 m2 open and 5200 m2 covered area at the 2nd Organized Industrial Zone in Konya-Turkey. The air compressor is connected to the engine through gears or a v-belt. The compressor may be air cooled or may be cooled by the engine cooling system. It may have its own oil supply or be lubricated by engine oil. When air tank pressure rises to the “cut-out” level (around 125 pounds per-square-inch or “psi”), the governor stops the compressor from pumping air. The number and size of air tanks varies among vehicles. For example, the water can freeze in cold weather and cause brake failure. The water and oil tend to collect in the bottom of the air tank. Be sure that you drain the air tanks completely. Each air tank is equipped with a drain valve in the bottom. There are two types: Manually operated by turning a quarter turn or by pulling a cable. You must drain the tanks yourself at the end of each day of driving. These tanks may be equipped for manual draining as well. Automatic air tanks are available with electric heating devices. This helps to reduce the risk of ice in air brake valves and other parts during cold weather. Ice inside the system can make the brakes stop working.http://www.neline.nl/userfiles/breville-urn-manual.xml Check the alcohol container and fill up as necessary, every day during cold weather. The safety valve protects the tank and the rest of the system from too much pressure. The valve is usually set to open at 150 psi. If the safety valve releases air, something is wrong. Letting up on the brake pedal reduces the air pressure and releases the brakes. Releasing the brakes lets some compressed air go out of the system, so the air pressure in the tanks is reduced. It must be made up by the air compressor. Pressing and releasing the pedal unnecessarily can let air out faster than the compressor can replace it. The most common type is the s-cam drum brake. The parts of the brake are discussed below. Brake Drums, Shoes, and Linings. Brake drums are located on each end of the vehicle’s axles. The wheels are bolted to the drums. The braking mechanism is inside the drum. To stop, the brake shoes and linings are pushed against the inside of the drum. This causes friction, which slows the vehicle (and creates heat). The heat a drum can take without damage depends on how hard and how long the brakes are used. Too much heat can make the brakes stop working. S-cam Brakes. When you push the brake pedal, air is let into each brake chamber. Air pressure pushes the rod out, moving the slack adjuster, thus twisting the brake camshaft. This turns the s-cam (so called because it is shaped like the letter “S”). The s-cam forces the brake shoes away from one another and presses them against the inside of the brake drum. When you release the brake pedal, the s-cam rotates back and a spring pulls the brake shoes away from the drum, letting the wheels roll freely again. See Figure 5.2. Wedge Brakes. In this type of brake, the brake chamber push rod pushes a wedge directly between the ends of two brake shoes. This shoves them apart and against the inside of the brake drum. Wedge brakes may have a single brake chamber, or two brake chambers, pushing wedges in at both ends of the brake shoes.http://www.drupalitalia.org/node/75993 Wedge type brakes may be self-adjusting or may require manual adjustment. Disc Brakes. In air-operated disc brakes, air pressure acts on a brake chamber and slack adjuster, like s-cam brakes. But instead of the s-cam, a “power screw” is used. The pressure of the brake chamber on the slack adjuster turns the power screw. The power screw clamps the disc or rotor between the brake lining pads of a caliper, similar to a large c-clamp. If the vehicle has a dual air brake system, there will be a gauge for each half of the system. (Or a single gauge with two needles.) Dual systems will be discussed later. You should slow down and use a lower gear. A warning signal you can see must come on before the air pressure in the tanks falls below 55 psi. (Or one half the compressor governor cutout pressure on older vehicles.) The warning is usually a red light. A buzzer may also come on. Another type of warning is the “wig wag.” This device drops a mechanical arm into your view when the pressure in the system drops below 55 psi. An automatic wig wag will rise out of your view when the pressure in the system goes above 55 psi. The manual reset type must be placed in the “out of view” position manually. It will not stay in place until the pressure in the system is above 55 psi. The air brake system does this with an electric switch that works by air pressure. The control is usually marked “normal” and “slippery.” When you put the control in the “slippery” position, the limiting valve cuts the “normal” air pressure to the front brakes by half. Limiting valves were used to reduce the chance of the front wheels skidding on slippery surfaces. However, they actually reduce the stopping power of the vehicle. Front wheel braking is good under all conditions. Tests have shown front wheel skids from braking are not likely even on ice. Make sure the control is in the “normal” position to have normal stopping power. Many vehicles have automatic front wheel limiting valves.http://dkc1burgas.com/images/brake-buddy-classic-manual.pdf They reduce the air to the front brakes except when the brakes are put on very hard (60 psi or more application pressure). They must be held on by mechanical force (because air pressure can eventually leak away). Spring brakes are usually used to meet these needs. When driving, powerful springs are held back by air pressure. If the air pressure is removed, the springs put on the brakes. A parking brake control in the cab allows the driver to let the air out of the spring brakes. This lets the springs put the brakes on. A leak in the air brake system, which causes all the air to be lost, will also cause the springs to put on the brakes. Tractor and straight truck spring brakes will come fully on when air pressure drops to a range of 20 to 45 psi (typically 20 to 30 psi). Do not wait for the brakes to come on automatically. When the low air pressure warning light and buzzer first come on, bring the vehicle to a safe stop right away, while you can still control the brakes. The braking power of spring brakes depends on the brakes being in adjustment. You pull the knob out to put the parking brakes (spring brakes) on, and push it in to release them. On older vehicles, the parking brakes may be controlled by a lever. Use the parking brakes whenever you park. Caution. Never push the brake pedal down when the spring brakes are on. If you do, the brakes could be damaged by the combined forces of the springs and the air pressure. Many brake systems are designed so this will not happen. But not all systems are set up that way, and those that are may not always work. It is much better to develop the habit of not pushing the brake pedal down when the spring brakes are on. Modulating Control Valves. In some vehicles a control handle on the dash board may be used to apply the spring brakes gradually. This is called a modulating valve. It is spring-loaded so you have a feel for the braking action. The more you move the control lever, the harder the spring brakes come on.http://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16280a3bf7ac0a---bt-diverse-6410-user-manual.pdf They work this way so you can control the spring brakes if the service brakes fail. When parking a vehicle with a modulating control valve, move the lever as far as it will go and hold it in place with the locking device. Dual Parking Control Valves. When main air pressure is lost, the spring brakes come on. Some vehicles, such as buses, have a separate air tank which can be used to release the spring brakes. This is so you can move the vehicle in an emergency. One of the valves is a push-pull type and is used to put on the spring brakes for parking. The other valve is spring loaded in the “out” position. When you push the control in, air from the separate air tank releases the spring brakes so you can move. When you release the button, the spring brakes come on again. There is only enough air in the separate tank to do this a few times. Therefore, plan carefully when moving. Otherwise, you may be stopped in a dangerous location when the separate air supply runs out. Many commercial vehicles built before these dates have been voluntarily equipped with ABS. Check the certification label for the date of manufacture to determine if your vehicle is equipped with ABS. ABS is a computerized system that keeps your wheels from locking up during hard brake applications. Vehicles with ABS have yellow malfunction lamps to tell you if something isn’t working. Tractors, trucks, and buses will have yellow ABS malfunction lamps on the instrument panel. Trailers will have yellow ABS malfunction lamps on the left side, either on the front or rear corner. Dollies manufactured on or after March 1, 1998 are required to have a lamp on the left side. On newer vehicles, the malfunction lamp comes on at start-up for a bulb check, and then goes out quickly. On older systems, the lamp could stay on until you are driving over five mph. If the lamp stays on after the bulb check, or goes on once you are under way, you may have lost ABS control at one or more wheels.www.daddyproofkidswear.com/files/candy-c2-095-manual.pdf In the case of towed units manufactured before it was required by the Department of Transportation, it may be difficult to tell if the unit is equipped with ABS. Look under the vehicle for the electronic control unit (ECU) and wheel speed sensor wires coming from the back of the brakes. ABS is an addition to your normal brakes. It does not decrease or increase your normal braking capability. ABS only activates when wheels are about to lock up. ABS does not necessarily shorten your stopping distance, but it does help you keep the vehicle under control during hard braking. Test Your Knowledge Why must air tanks be drained. What is a supply pressure gauge used for. All vehicles with air brakes must have a low air pressure warning signal. True or False? What are spring brakes. Front wheel brakes are good under all conditions. True or False? How do you know if your vehicle is equipped with antilock brakes. These questions may be on your test. If you can’t answer them all, re-read subsection 5.1. You can change your cookie settings at any time. However, some vehicles may have been manufactured with a brake pedal which did not incorporate grooves or the fitting of an anti-slip material and these should not be rejected. However, you should not reject a brake pedal if the vehicle has been manufactured with one that does not have grooves or anti-slip material. It is not a defect if the design pattern of the brake pedal rubber is worn smooth. Checks on vehicles with power-assisted braking systems should be carried out with the engine off. In such cases the extent of reserve travel should be assessed during the brake test. Pressure build-up is considered satisfactory if the warning device stops operating within: It is not a defect unless the warning light stays on after the engine has been started. Testers should be aware of this throughout the test.http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/16280a3d177772---bt-easicom-1000-instruction-manual.pdf However, the mechanism for keeping the brakes applied is usually within brake calliper or motor gear assembly and therefore not easy to see. However, they may be used to assist the application or release of a mechanical brake. Reservoir caps should not be removed. Class 3 vehicles are not inspected for brake fluid warning lamp. It must be done with care so that any protective coating does not get damaged. If you are not sure whether the pipe is sufficiently deteriorated to justify rejection, you should give the benefit of the doubt. Other pads may have a cut, which if worn away indicates that the pad must be replaced. Being worn below the manufacturer’s recommended limits is not a reason in itself. You should take into account any additional information from the vehicle manufacturer. However, if the number of wheel locks are not achieved for any system on a non-ATL RBT, a decelerometer test must be used to establish the overall brake efficiency of the relevant system(s). In these circumstances, the vehicle should be treated as having an unknown test weight. The brake force used in the efficiency calculation is the total from all wheels when operated by that control only. Additional braking devices, such as electronic retarders, should not be operated during the brake test. If the vehicle or system is unsuitable, it should be tested with a decelerometer. If a vehicle is ejected from the brake rollers, the required brake efforts may not be achieved. In such cases the test should be repeated in manual mode, running each roller individually. With the rollers still running, note whether a significant brake effort is recorded from any wheel without a brake being applied. Stopping short of lock up or maximum effort, hold a steady pedal pressure and check there is no excessive brake effort fluctuation with each revolution of the road wheel. Stop the rollers. Stop the rollers if they have not stopped automatically.http://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16280a3e37edbb---bt-diverse-handset-manual.pdf However, if the rollers are run together and the vehicle fails to meet the minimum performance requirement, the test must be repeated running the rollers individually. Do not stop on the tester. Take note of the way the brake efforts fluctuate. However, when this is not the case, such as for tricycles and quadricycles or if MTS is not working, you must calculate the brake imbalance against the maximum brake efforts on each axle in the following way: Or in the case of testing on the road, the vehicle deviates excessively from a straight line (ii) the braking effort from any wheel is less than 50 of the maximum effort recorded from the other wheel on a steered axle Otherwise, take the weight from a weight data chart or some other reliable source. On vehicles where only the ULW is displayed, you must calculate the DGW by multiplying the number of passenger seats by 63.5kg (or 140lbs) and adding the ULW, for example: The MOT testing service will automatically calculate brake efficiency and out of balance results. The MOT testing service will automatically pass or fail the vehicle on brake efficiency. If the secondary brake is also the park brake then there is no need to carry out a separate park brake test. As soon as the minimum efficiency requirement is reached the brake testing must cease to avoid any possible damage. Stop the rollers if they have not stopped automatically. Or in the case of testing on the road, the vehicle deviates excessively from a straight line. (ii) the braking effort from any wheel is less than 50 of the maximum effort recorded from the other wheel on a steered axle For details see Section 1.3.1 and 1.3.2. As soon as the minimum efficiency requirement is reached the brake testing must cease to avoid any possible damage. In such cases a gradient test must be carried out. Stop the rollers if they have not stopped automatically. The service brake may be used to assist in setting the parking brake.da-kong.com/userfiles/candy-c1w-100-user-manual.pdf A particular public road should not be used for tests so frequently that it could cause complaints from residents. For details see Section 1.3.1 and 1.3.2. However, they must have a parking brake that can prevent at least two wheels from turning.They do not need to meet a specified efficiency requirement. It is not necessary to drive the vehicle to carry out this inspection. This can cause the ABS system to indicate a fault which may require specialist equipment to rectify. This does not apply to sensor rings or other ABS components which are an integral part of another component, such as a brake disc or drive shaft. On many vehicles, you will not be able to see if the brake fluid is contaminated. You should only fail a vehicle if you can clearly see that the fluid is contaminated. We’ll send you a link to a feedback form. It will take only 2 minutes to fill in. Don’t worry we won’t send you spam or share your email address with anyone. What could be easier than nothing at all? InvisiBrake is a fully-automatic supplemental braking system that uses the electrical connections already in place on your towed vehicle (the towed vehicle's electrical harness) to brake when you brake the motorhome — the same electrical signal that activates the towed vehicle's brake lights also activates InvisiBrake. Features Weight limits for towing Which system is right for me. Frequently Asked Questions (FAQs) about InvisiBrake InvisiBrake testimonial InvisiBrake featured in TrailBlazer Magazine article InvisiBrake: Explained, Installed and Tested Will InvisiBrake work with Hydroboost braking systems. The 13-digit and 10-digit formats both work. Please try again.Please try again.Used: AcceptableAmazon fulfills shipment with tracking info and provides customer service for returns. Used items may not include supplemental materials, CDs, Codes, Etc.Something we hope you'll especially enjoy: FBA items qualify for FREE Shipping and Amazon Prime. Learn more about the program. Known for its comprehensive coverage, accurate and up-to-date details, and abundant illustrations, the text is an ideal resource to prepare for success as an automotive technician or pursue ASE certification. Now updated with extensive information on new and emerging technology and techniques?including hybrid vehicles, brake by wire, and electric brakes?the Sixth Edition also aligns with the NATEF 2012 accreditation model, including job sheets correlated to specific AST and MAST tasks. Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device required. Show details. Sold by Thelen's Books and ships from Amazon Fulfillment. Ships from and sold by Amazon.com. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. Register a free business account Mr. Pickerill was a technician for 22 years before entering the training field, and he has more than 40 years of technical and teaching experience. He received his M.S. degree in career and technical education from Indiana State University.If you are a seller for this product, would you like to suggest updates through seller support ? Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness. Please try again later. PinkTWRX 5.0 out of 5 stars It also saved me 50 from the cost of the books through the school bookstore which is a big win for the student on a budget who needs to also buy more tools.The author put a lot of time in this.Thanks to the todays technician series i am able to continue on the path to greatness. The book was used, but looked brand new when it arrived. Thanks.Page 1 of 1 Start over Page 1 of 1 In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. Generally, a basic system consists of a pair of air applied disc brakes, a hub mounted ventilated disc and an air control panel. Reference the brake data sheets to select the appropriate model that will stop the rotating inertia of the fan in the desired time (apply a 125 service factor to your selection).To determine which brake package is most applicable, please download the Qualification Form, complete and submit to Kobelt for a quote, or check out Kobelt's brake products below. The indicator light on the electric parking brake switch turns on when the switch is turned on. If this occurs, wait approx. 1 minute before operating the electric parking brake switch again. An operation sound can be heard, however, this does not indicate a problem. When the switch is released, the electric parking brake is released and the beep stops. When releasing the electric parking brake When the electric parking brake is released, the brake system warning light and the electric parking brake switch indicator light turn off. Electric parking brake automatic release If you do not intend to drive immediately, shift the change lever (manual transaxle) to the neutral position, or shift the selector lever (automatic transaxle ) to the P or N position. With no moving parts to wear out, your AFO will stand the test of time. It is the only air brake system that energizes the towed vehicle’s power brakes through a patented process that doesn’t require an electronic vacuum pump. It uses a pilot signal from the coach's air brake system to deliver 100 direct proportional braking. And in the event of a separation of the coach and towed vehicle, AFO is the first and only supplemental brake system that seals the coach’s air supply. It meets all chassis warranty requirements and the chassis brake warranty won’t be voided by chassis manufacturers. No inertia (adjustable) system can match this braking profile, period. Just as you don’t adjust the individual braking effort of each wheel on the coach, you don’t adjust the braking effort of AFO. The towed vehicle experiences the same perfect braking symmetry as each individual brake on the coach. As such, the exhaust brake and transmission retarder have no effect on the AFO. The system is composed of three main components: the Operating Unit, the Actuator, and the Coach Air Assembly. The AFO Operating Unit mounts under the hood of the towed vehicle, completely out of sight. It houses the vacuum generator for the towed’s power assist and also the reserve air supply for the breakaway circuit. The brake actuator is compact, mounting on the brake arm of the towed vehicle and securing to the firewall with just one self-drilling screw. Once installed, the entire system is invisible and always ready for towing with no takedown. Total Coach Protection Total Coach Protection, an exclusive AFO attribute, is a process that separates and protects the air supply on the coach. To meet federal regulations (FMVSS 121) and chassis warranty requirements when using air brakes, the supplemental brake system must protect the towing vehicle air supply. Only Demco includes the components necessary to meet these important safety regulations. If the towed vehicle separates or the towing system fails, the coach air is protected. AFO is the safest air brake system available. No other air-operated system offers this level of safety and control. The Coach Air Assembly is pre-assembled and pre-tested for function and leaks. All fittings are included and are push-to-connect style DOT rated. Actuator For nearly a decade, others have tried to copy it, but no one can match the ease of installation, durability, and functionality of Demco’s patented actuator. Other pulley systems have six plus screws and require large, flat surfaces directly behind the brake arm to work reliably—a commodity not afforded by many late model vehicles. Fits ALL Towed Vehicles No need to ask if AFO is compatible with your towed vehicle. Each AFO system comes complete with everything necessary for the installation on every towed vehicle. When you purchase a new towed vehicle, the AFO system is simply transferred to the new car without purchasing any new parts. A low-cost reinstallation kit is available with small parts for extra convenience outfitting your new vehicle. This convenience comes only from Demco. The AFO Difference Things that are different are not the same. AFO offers the latest in supplemental braking technology. AFO uses the coach's air to create a vacuum for the towed vehicle’s power-brake feature, and also uses the same air supply to proportionately apply the brakes in the towed vehicle. Since it uses the coach’s air supply, AFO does not need an electric pump. In fact, the Air Force One operating unit has no moving parts at all. The AFO operating unit is very small and fits under the hood of your towed vehicle. The brake actuator mounts on the brake arm just like the Stay-IN-Play cylinder. In addition, AFO is the only air brake that offers and includes coach protection for the air supply in the event of a separation. With “Total Coach Protection,” the coach’s air supply is sealed off to allow the coach to stop normally. At the same time, the coach is protected, the breakaway system on the car activates the towed vehicle's brakes. AFO also includes a coach notification light. The notification light is directly linked with the reed switch that is located on the AFO cylinder. Any time the brakes are applied in the towed vehicle, the light is on. AFO is a revolutionary product that will apply truly proportionate brake effort in your towed vehicle. The simple install combined with vacuum-assisted power brakes and truly proportionate braking makes the AFO system second to none for a motor home with air brakes. Combine the power brakes of the car being active with all the other great features, including no set up for towing, and you too will agree with RV’ers all over the country; AFO is the greatest new innovation for this industry. Things that are different are not the same. AFO is truly better. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.).