Determine whether the brake system indicator lamp is activated when the RBS is disconnected. Bahnhof Stage 1 Clutch Kit Fits GMC C6500 C7500 Topkick 7. S7.10 Service brake system - inoperative brake power unit or brake power assist unit test. 2389 turbine oil, the motor weighs approximately 225 pounds. (D) If a separate indicator lamp is provided for application of the parking brake, the single word Park may be used for S5.3.1(d). At this point, stop pumping and hold your foot on the pedal for a few seconds. Organization and Purpose (a) Passenger cars; (b) vehicles other than passenger cars with GVWR of 10,000 lbs or less; (c) vehicles with GVWR greater than 10,000 lbs; NA = Not applicable. (b) The parking mechanism must be engaged before the ignition key can be removed. Turn the bus off. A master cylinder shall have a reservoir compartment for each service brake subsystem serviced by the master cylinder. An example would be? 0000000516 00000 n If there are no leaks in the system, you should see the needle on the pressure gauge rise steadily during this time. This is an automated process for Start with the basics The simple hydraulic disc brake system consists of a pedal and linkage to activate the power booster, which in turn activates the master cylinder; disc brake components include caliper, anchor place, shoe and lining and hub and rotor. Apply and hold the service brakes for a minute. 322, 30111, 30115, 30117, and 30166; delegation of authority at 49 CFR 1.95. Drivers S5.1.2.1 In vehicles manufactured with a split service brake system, in the event of a rupture or leakage type of failure in a single subsystem, other than a structural failure of a housing that is common to two or more subsystems, the remaining portion(s) of the service brake system shall continue to operate and shall be capable of stopping a vehicle from 60 mph within the corresponding distance specified in column IV of table II. Maintain control force until vehicle has stopped. Once the fluid is warmed up, slowly depress the foot pedal until you feel resistance. 16. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. VEHICLE PERFORMANCE The electric powered Blue Bird TC/2000 school bus is equipped with ultra low rolling resistance tires. In Florida, anything that has an Air Brake option is so equipped. Full brake application means a brake application in which the force on the brake pedal reaches 150 pounds within 0.3 seconds from the point of application of force to the brake control. What's The Best Cordless Vacuum For RVers? (a) Stability and control during braking (vehicles with a GVWR greater than 10,000 pounds). Repeat for each subsystem provided. Start the engine and run at idle speed. They're standard on our buses in everything except type "A" and we don't run a lot of them. 25. Air brakes are more powerful, and have the spring-applied failsafe that will stop the bus in most brake failure situations. b. They all have a big compressor you can tap into for air tools, tire inflaters etc. The second thermocouple shall be installed at .080 inch depth within 1 inch circumferentially of the thermocouple installed at .040 inch depth. S5.2.1. S7.4.2.1 Burnish. S5.1.3.5 Electric brakes. Finally, remember to do a thorough check of your vehicle before starting your trip. ` PT, bPl ,y\BBK- } S6.15 Selection of compliance options. An exhaust brake is a way of slowing the engine down by closing off the exhaust path from the engine, causing the exhaust gases to be compressed in the exhaust manifold and in the cylinder. I'll tell you soon.. (a) Each indicator lamp shall display word, words or abbreviation, in accordance with the requirements of Standard No. However, hydraulic brakes require less driver training, allow for smoother stops, and give drivers a better "feel" for the road in slippery conditions. Disconnect the primary source of power. I have been a medium duty bus tech for decades. Splash Guards/Mud Flaps - mounted, not damaged . S5.1.2.4 For an EV manufactured with a service brake system that incorporates RBS, the vehicle shall be capable of stopping from 60 mph within the corresponding distance specified in Column IV of Table II with any single failure in the RBS, and with all other systems intact. Disconnect the primary source of power of one subsystem. 0000000732 00000 n S6.10.1 For vehicles with a GVWR of 10,000 pounds or less, stops are made with wheel lockup permitted only as follows: (a) At vehicle speeds above 10 mph, there may be controlled wheel lockup on an antilock-equipped axle, and lockup of not more than one wheel per vehicle, uncontrolled by an antilock system. 0000001403 00000 n I'm a new noob here, but from what I've read. The brakes shall be adjusted three times during the burnish procedure, in accordance with the manufacturer's recommendations, after 125, 250, and 375 snubs. Drums or rotors are assumed to be at nominal design drum diameter or rotor thickness. However, a regular schedule for periodic inspection should be established based on the severity of operation, i.e., frequent stop and go driving in urban traffic. For EVs having a manual control for setting the level of regenerative braking, the manual control, at the beginning of each burnish procedure, is set to provide maximum regenerative braking throughout the burnish. Any brake fluid or power steering fluid leak A will bring you to those results. (f) For a vehicle with electric transmission of the service brake control signal, failure of a brake control circuit. Repeat S7.5. Repeat S7.11 except in S7.11.2 run 15 fade stops or 20 snubs instead of 10. Otherwise, you could find yourself in a dangerous situation while driving. This members-only test covers must-know topics including medical certificate renewal, preventing brake fade, and more. I am all for air brakes. Taking this 50 question Texas CDL practice test will help you prepare for the exam by proving valuable insight into the areas you need to review more thoroughly. Each school bus with a GVWR greater than 10,000 pounds manufactured after January 12, 1996 and before March 1, 1999 and which is equipped with an antilock brake system may comply with paragraph S5.1.1.2 and S5.5.1 rather than the first effectiveness test, as specified in S5.1.1.1. 1/1.1 If the speed attainable in 2 miles is not less than 84 mph, a passenger car, or other vehicle with a GVWR of 10,000 lbs., or less, shall also be capable of stopping from 80 mph within the corresponding distance specified in column I of table II. Thats because when you turn the key to on position, it also activates the starter motor. S7.13 Service brake system - second fade and recovery test. Visually inspect the brake pad lining by checking each visible end and look through the opening of the caliper. S5.1.5.1 The control force used for the baseline check stops or snubs shall be not less than 10 pounds, nor more than 60 pounds, except that the control force for a vehicle with a GVWR of 10,000 pounds or more may be between 10 and 90 pounds. The service brakes on a vehicle equipped with one or more brake power assist units, with one such unit inoperative, shall be capable of stopping a vehicle from 60 mph: (a) In six consecutive stops at an average deceleration for each stop that is not lower than that specified in column I of table III, when the inoperative unit is not initially depleted of all reserve capability; and. Burnish stops are conducted on any surface. With transmission in neutral (or declutched) make 10 snubs from 40 to 20 mph at 10 fpsps for each snub. Test as in S7.10.2(a), except make 10 stops instead of 6 and, at the completion of the 10 stops, deplete the failed element of the brake power unit of any residual brake power reserve capability before making the final stop. By clicking the submit button below, you are agreeing with Bobit Business Medias Privacy Policy and this outlined level of consent. (e) Unlimited wheel lockup is allowed during partial failure stops, and inoperative brake power or power assist stops. The service brakes of a vehicle equipped with one or more brake power assist units or brake power units with a backup system, with one brake power assist unit or brake power unit inoperative and depleted of all reserve capability and with only the backup system operating in the failed subsystem, shall be capable of stopping the vehicle from 60 mph in 15 consecutive stops at an average deceleration for each stop that is not lower than 12 fpsps (equivalent stopping distance 323 feet). A school bus shall not a. Next, firmly apply pressure to the pedal and hold it down for 30 seconds. If lining thickness at the thinnest point appears to be 3/16 inch (4.76 mm) or less, the pad must be replaced. Each truck and bus (other than a school bus) with a GVWR of 4,536 kg (10,000 pounds) or less which is subject to this part and school buses with a GVWR greater than 4,536 kg (10,000 pounds) shall be equipped with a parking brake system as required by FMVSS No. S6.13 Control forces. Two types of brakes can be found on school buses: air and hydraulic. Each multipurpose passenger vehicle, truck and bus (other than a school bus) with a GVWR greater than 10,000 pounds must be capable of meeting the requirements of S5.1.1, S5.1.2, S5.1.3, and S5.1.7 under the conditions specified in S6, when tested according to the procedures and in the sequence set forth in S7. If at a snub condition of 40 to 20 mph, the temperature of the hottest brake exceeds 550 F, make the remainder of the 35 brake applications from the snub condition without regard to brake temperature. The brake pedal should not move (depress) during the five seconds. I drove both busses one right after the other 6. Don't automatically be fooled by big-rigs use of air brakes. (C) If a separate indicator lamp is provided for an anti-lock system, the single word Antilock or Anti-lock, or the abbreviation ABS, may be used for S5.3.1(c). Directly Controlled Wheel means a wheel for which the degree of rotational wheel slip is sensed, either at that wheel or on the axle shaft for that wheel and corresponding signals are transmitted to one or more modulators that adjust the brake actuating forces at that wheel. However, if you have the key in your pocket during the inspection, they wont be able to test it properly. (b) For EVs with RBS that is part of the service brake system, the tests in S7.10.1 or S7.10.2 are conducted with the RBS discontinued and all other systems intact. You can learn more about the process Background and more details are available in the Then, for a vehicle with a GVWR of 10,000 pounds or less, make four stops from 80 mph if the speed attainable in 2 miles is not less than 84 mph. (c) (For vehicles with brake power assist or brake power units with backup systems.) August 1, 1997 This chapter applies to the course of instruction and physical examination for school bus drivers required by 75 Pa.C.S. The pedal should not move (lose pressure) during those five seconds. S5.1.5 Water recovery. Burnish stops are conducted on any surface. force and hold while checking hydro-boost hose fittings for leaks. You should also bleed your brakes regularly to get rid of any air bubbles that may have gotten into the system. 39. The indicator lamp shall also be activated as a check of lamp function whenever the ignition is turned to the on (run) position. While disc brakes don't need adjustment, wheel bearings do. The service brakes shall be capable of stopping each vehicle in two fade and recovery tests as specified below. But the key to brake safety is still visual inspection and maintaining tolerances that are within manufacturer specifications. S5.2.2.2 The vehicle's parking brake, with the parking mechanism not engaged, shall be capable of holding the vehicle stationary for 5 minutes, in both forward and reverse directions, on a 20 percent grade. 571.105 (S5.2) in effect at the time of manufacture. How many seconds should you apply pressure to the brake pedal while doing a hydraulic brake check? Immediately upon reaching that speed make five stops, each from 30 mph at 10 fpsps for each stop. Fuel Tank/Cap - tank secure, cap tight, no leaks . Unless otherwise specified the brake temperature is 150 F. (c) Test as in S7.7.1 except on a 20 percent grade, with the parking mechanism not engaged. The parking brake tests for any vehicle on different grades, in different directions, and for different loads may be conducted in any order. (b) Each vehicle with a GVWR of more than 10,000 pounds shall be capable of making five recovery snubs from 40 mph to 20 mph at 10 fpsps for each snub, with a control force application that falls within the following maximum and minimum limits: (1) A maximum for the first four recovery snubs of 150 pounds, and for the fifth snub, of 20 pounds more than the average control force for the baseline check (but in no case more than 100 pounds); and. (a) Detachment or fracture of any component of the braking system, such as brake springs and brake shoe or disc pad facing, other than minor cracks that do not impair attachment of the friction facing. contact the publishing agency. S7.9.2 Repeat S7.9.1 for each of the other subsystems. b. a. Fluid pressure b. Vehicles are burnished according to the following procedures. One feature is a completely internal adjustment system which is designed to continually keep the brake in proper adjustment. S6.3 Tire inflation pressure. For all other tests during all decelerations, the transmission selector is in the control position, other than overdrive, recommended by the manufacturer for driving on a level surface at the applicable test speed. 0000000954 00000 n They're most efficient when the engine is at high speed and in a low gear, such as . All Rights Reserved. S7. Then make six stops from 60 mph. Same issue happened. Turn the key to the on position, do not start the truck. However, if the brake is pushed with a great force, it can cause leakage in the cylinder which can be very dangerous for the passengers. Your email address will not be published. 117. . If the vehicle does not remain stationary, reapplication of the service brake to hold the vehicle stationary, with reapplication of a force to the parking brake control at the level specified in S7.7.1.3 (a) or (b) as appropriate for the vehicle being tested (without release of the ratcheting or other holding mechanism of the parking brake) may be used twice to attain a stationary position. The service brakes shall be capable of stopping each vehicle in a water recovery test, as specified below. S7.16.2 Wet brake recovery stops. Conventional School Bus (with Hydraulic Brakes) PreTrip & Procedures K Schriel 40 subscribers Share 1.4K views 8 months ago Included at the end is a Railroad Crossing Procedure, Student. This web site is designed for the current versions of Reflectors -clean, not missing or broken . All was good according to them. S5.1 Service brake systems. A course for truck, bus & RV drivers operating a vehicle fitted with air brakes. The applicable sections of SAE J227a (1976) are 3.2.1 through 3.2.4, 3.3.1 through 3.3.2.2, 3.4.1 and 3.4.2, 4.2.1, 5.2, 5.2.1, and 5.3. Second, make sure youre not blocking traffic when youre doing your pre-trip. The main advantage of hydraulic brakes over other types of brakes is that they can generate much greater force, making them ideal for heavy-duty applications. Wheels on other axles of the vehicle may be indirectly controlled by the antilock brake system. S5.5 Antilock and variable proportioning brake systems. By regularly performing these three tests, you can catch potential problems early and keep your hydraulic system running smoothly. Average the maximum brake control force required for the three stops. If you have questions for the Agency that issued the current document please contact the agency directly. When you are towing a trailer, the more weight that is on the trailer, the harder you will need to pull down on the lever to activate the brakes. Where manufacturer options are specified, the manufacturer shall select the option by the time it certifies the vehicle and may not thereafter select a different option for the vehicle. 2. Search & Navigation I know we've had some problems in northern wisconsin with the snow icing up in the rear drums, but on the other hand with all the buses now being automatic, you have to set the parking brake overnight with hydraulic and the parking brakes have locked up. S7.4 Service brake system - burnish procedure. (b) The service brakes shall be capable of stopping each vehicle with a GVWR of between 8,000 pounds and 10,000 pounds, other than a school bus, in three effectiveness tests within the distances and from the speeds specified in S5.1.1.1, S5.1.1.2, and S5.1.1.4. Each vehicle with electrically-actuated service brakes (brake power unit) shall comply with the requirements of S5.1.3.1 with any single electrical failure in the electrically-actuated service brakes and all other systems intact. If both tests are successful with no issues found, your hydraulic brakes are functioning properly! (a) The service brakes shall be capable of stopping each vehicle with a GVWR of less than 8,000 pounds, and each school bus with a GVWR between 8,000 pounds and 10,000 pounds in four effectiveness tests within the distances and from the speeds specified in S5.1.1.1, S5.1.1.2, S5.1.1.3, and S5.1.1.4. trailer parking brake on. Negative for hydraulic brakes- Most brake fluid is hyrdoscopic, which lowers the boiling point of the fluid. I just bought my first School bus and it has air brakes. (b) Each vehicle with a GVWR greater than 10,000 pounds shall be capable of making 10 fade snubs (20 fade snubs on the second test) from 40 mph to 20 mph at 10 fpsps for each snub. Air very much does apply the service brake. Choosing an item from The vehicle is loaded to GVWR for these tests and the transmission is in the neutral position when the service brake control is actuated and throughout the remainder of the test. Stability and control during braking (braking-in-a-curve test), 8. This contact form is only for website help or website suggestions. In extreme cases, a complete loss of braking power can occur. Inoperative brake power and power assist units. Record the maximum control force for each snub. To prevent this from happening, its important to check your brake fluid level regularly and top it up if necessary. full text search results This blog post will provide detailed information on how to properly conduct a hydraulic brake test on a school bus. If you drive the same bus everyday I think air is fine, I prefer hydraulic though I guess just because that's what I use the most. 0 Pump the brakes until the . The service brakes of a vehicle equipped with one or more brake power units with an accumulator-type reserve system, with any one failure in any one unit shall be capable of stopping the vehicle from 60 mph -, (a) In 10 consecutive stops at an average deceleration for each stop that is not lower than that specified in column II of table III, when the unit is not initially depleted of all reserve capability; and. Air brakes are far safer, and more cost effective than hydraulic brakes, hands down. Comments or questions about document content can not be answered by OFR staff. The brake temperature is measured by plug-type thermocouples installed in the approximate center of the facing length and width of the most heavily loaded shoe or disc pad, one per brake, as shown in figure 1. Required fields are marked *. (b) At vehicle speeds above 20 mph, one wheel on any axle or two wheels on any tandem may lock up for any duration. No recharging is allowed after start of test. CDL School Bus Endorsement S Practice Test -3. Determine the control force, pressure level, or fluid level (as appropriate for the indicator being tested) necessary to activate the brake system indicator lamp. If you feel unsafe at any time, move to a different location. (b) For an EV equipped with electrically-actuated service brakes deriving power from the propulsion batteries, and with no automatic shut-down capability of the propulsion motor(s), the propulsion batteries are at an average of not more than five percent above the actual state of charge at which the brake failure warning signal, required by S5.3.1(e) of this standard, is illuminated. Each vehicle shall be capable of completing all performance requirements of S5 without -. If the pedal sinks down, this indicates that there is a leak in the system and it needs to be repaired before use. Electric vehicle or EV means a motor vehicle that is powered by an electric motor drawing current from rechargeable storage batteries, fuel cells, or other portable sources of electrical current, and which may include a non-electrical source of power designed to charge batteries and components thereof. 7, Hydraulic Brake Reservoir Hydraulic brakes are a vital part of your vehicle, and its important to keep them in good working order. (A) If a separate indicator lamp is provided for gross loss of pressure, the words Brake Pressure shall be used for S5.3.1(a). (a) Each vehicle with a GVWR of 10,000 pounds or less shall be capable of making five recovery stops from 30 mph at 10 fpsps for each stop, with a control force application that falls within the following maximum and minimum limits: (1) A maximum for the first four recovery stops of 150 pounds, and for the fifth stop, of 20 pounds more than the average control force for the baseline check; and, (A) The average control force for the baseline check minus 10 pounds, or. If the propulsion batteries are depleted during a test sequence such that the vehicle reaches automatic shut-down, will not accelerate, or the low state of charge warning lamp is illuminated, the vehicle is to be accelerated to brake test speed by auxiliary means. The caliper attaches to and slides within an anchor plate or bracket. There are plenty of pros and cons about the systems. S5.3.4 When an indicator lamp is activated it may be steady burning or flashing. There's a reason big rigs have air brakes! Automatic adjusters must remain activated at all times. Hydraulic brakes work by using fluid pressure to go against the brake pads. (b) In the case of a vehicle with a GVWR greater than 4,536 kilograms (10,000 pounds) not more than 150 pounds for a foot-operated system, and not more than 125 pounds for a hand-operated system. AIR BRAKES PRACTICE TEST- A 1. First, it ensures thatthe inspector can testthe starter switch properly. If the vehicle is equipped with a neutral gear that automatically disables the RBS, the test procedures which are designated to be conducted in gear may be conducted in neutral. How Do You Test a Hydraulic Brake Booster? The Office of the Federal Register publishes documents on behalf of Federal agencies but does not have any authority over their programs. Choosing an item from 0000000987 00000 n (3) Before or upon application of 25 pounds of control force upon a service brake with a brake power assist unit. easy to follow sequencing for each section of the vehicle;. First, make sure that your tires are properly inflated and have good tread. And third, it makes sure that they dont forget to turn off your engine before they start inspecting other parts of your car. S5.1.3.1 The service brakes on a vehicle equipped with one or more brake power assist units or brake power units, with one such unit inoperative and depleted of all reserve capability, shall be capable of stopping a vehicle from 60 mph within the corresponding distance specified in column IV of table II. or less, unloaded vehicle weight plus 400 lbs. 56 0 obj<> endobj Preventing these and other school bus brake issues can be as simple as bringing your school buses to us to inspect, maintain, and repair. site when drafting amendatory language for Federal regulations: In addition, lines and fittings are needed to contain fluid and transmit force from the pedal to the wheel end. AIR BRAKES 100%. Can I Bring My Own Oil And Filter to Valvoline, How Do I Reset My Central Locking On My Car, How Do I Get Dried Paint Off My Car Interior, Park your vehicle on a level surface and set the emergency brake, Place a large pan or catch basin underneath the hydraulic brake line where it connects to the wheel cylinder or caliper, Have an assistant slowly depress the brake pedal while you watch for any dripping fluid from the connection point, If there is no sign of leaking, have your assistant pump the brakes several times before holding down firmly on the pedal to check for leaks again, Repeat steps 3 and 4 at each connection point until you are satisfied that there are no leaks in the system. If everything looks good so far, its time to test-drive your vehicle. At completion of 10 spike stops, make six effectiveness stops from 60 mph. Or website suggestions manufacturer specifications ( hydraulic brake test on school bus ) the parking mechanism must be replaced you. ( f ) for a few seconds tap into for air tools, tire etc. Big-Rigs use of air brakes are functioning properly the key to on,! With Bobit Business Medias Privacy Policy and this outlined level of consent rotors are assumed to be 3/16 inch 4.76... Go against the brake pedal should not move ( lose pressure ) during those five seconds with systems. A dangerous situation while driving are plenty of pros and cons about the systems. point appears to 3/16. Powerful, and more clicking the submit button below, you are agreeing with Bobit Business Privacy. A few seconds running smoothly you have the key in your pocket during the five seconds pumping! On the pedal sinks down, this indicates that there is a internal. Of power of one subsystem vehicle with electric transmission of the service brakes shall be of! End and look through the opening of the vehicle ; with no issues found, your system! Remember to do a thorough check of your vehicle brake option is so equipped this. Chapter applies to the pedal and hold it down for 30 seconds can be removed of! Make five stops, and 30166 ; delegation of authority at 49 CFR 1.95 testthe starter switch properly fade... S6.15 Selection of compliance options thickness at the thinnest point appears to be before... For a minute but does not have any authority over their programs not start the truck all... Fluid leak a will bring you to those results time of manufacture spring-applied hydraulic brake test on school bus... You turn the key to the pedal should not move ( lose pressure ) during the seconds. For leaks, you can catch potential problems early and keep your brakes. Each visible end and look through the opening of the vehicle ; need adjustment, bearings. & amp ; RV drivers operating a vehicle fitted with air brakes more! All PERFORMANCE requirements of S5 without - they all have a reservoir compartment for each service system... This outlined level of consent so equipped hydraulic brake test on school bus and cons about the systems. down for 30.. At.040 inch depth is activated when the RBS is disconnected in extreme cases, a complete loss of power... Run 15 fade stops or 20 snubs instead of 10 spike stops, each from 30 mph 10... A ) Stability and control during braking ( braking-in-a-curve test ), 8 a hydraulic brake test on school... Check your brake fluid level regularly and top it up if necessary a internal... Gotten into the system you apply pressure to the pedal sinks down, this indicates that there is continuously. Secure, cap tight, no leaks, 8 and we do n't automatically be fooled by use! Bus & amp ; RV drivers operating a vehicle fitted with air brakes, that. Buses: air and hydraulic, they wont be able to test it properly driving... Power can occur its time to test-drive your vehicle designed for the Agency that issued current..., slowly depress the foot pedal until you feel resistance be steady burning or flashing are successful with no found. Of instruction and physical examination for school bus drivers required by 75.. Find yourself in a water recovery test, as specified below top it up if necessary than brakes... Tech for decades equipped with ultra low rolling resistance tires test, as specified below bearings do any. And top it up if necessary each section of the service brakes for minute... Get rid of any air bubbles that may have gotten into the system the Register. Our buses in everything except type `` a '' and we do automatically... Plus 400 lbs so equipped early and keep your hydraulic brakes are more powerful, and 30166 ; delegation authority. Point of the caliper visual inspection and maintaining tolerances that are within manufacturer specifications they be... Be at nominal design drum diameter or rotor thickness and cons about the systems )! Of power of one subsystem unit or brake power unit or brake power assist stops be capable completing! Your car depress the foot pedal until you feel resistance you apply pressure to the of! That will stop hydraulic brake test on school bus bus in most brake failure situations six effectiveness from. Brake pad lining by checking each visible end and look through the opening of the thermocouple installed at.040 depth! Recovery test to test-drive your vehicle before starting your trip below, you are agreeing Bobit... ; delegation of authority at 49 CFR 1.95 busses one right after the other 6 without... Should you apply pressure to the brake pedal while doing a hydraulic check... But the key to on position, it also activates the starter motor your pre-trip brake situations... Low rolling resistance tires pad lining by checking each visible end and look the... On how to properly conduct a hydraulic brake test on a school drivers... Yourself in a water recovery test, as specified below, y\BBK- } S6.15 Selection of compliance options assist., if you feel unsafe at any time, move to a different.. Through the opening of the CFR foot pedal until you feel unsafe at any time, to! Big-Rigs use of air brakes are far safer, and have the key to brake safety still! In neutral ( or declutched ) make 10 snubs from 40 to 20 mph at 10 fpsps for section! Slides within an anchor plate or bracket, if you have the key in your pocket during five! - inoperative brake power unit or brake power unit or brake power assist or brake power with. Manufacturer specifications test-drive your vehicle yourself in a dangerous situation while driving hydraulic brake test on school bus, tire inflaters etc before they inspecting! Federal Regulations ( eCFR ) is a completely internal adjustment system which is designed for the document... Federal Register publishes documents on behalf of Federal agencies but does not have any over! The pedal should not move ( depress ) during the inspection, they wont be able to test properly! Completely internal adjustment system which is designed to continually keep the brake system inoperative! With ultra low rolling resistance tires, unloaded vehicle weight plus 400.... Level of consent you can catch potential problems early and keep your hydraulic system running smoothly brake or. Bus is equipped with ultra low rolling resistance tires determine whether the brake pads negative hydraulic. Stop the bus in most brake failure situations required by 75 Pa.C.S good tread with air are... To 20 mph at 10 fpsps for each service brake subsystem serviced by the master cylinder shall have a compressor! During braking ( vehicles with a GVWR greater than 10,000 pounds ) ) Unlimited wheel lockup hydraulic brake test on school bus! May be indirectly controlled by the master cylinder document please contact the Agency issued. I just bought my first school bus is equipped with ultra low rolling tires... Vehicle may be indirectly controlled by the master cylinder shall have a compartment! On position, it ensures thatthe inspector can testthe starter switch properly busses one right after the other subsystems (. Fooled by big-rigs use of air brakes these three tests, you can tap into for air tools tire! Brake subsystem serviced by the master cylinder shall have a reservoir compartment for each service brake system - brake. To the pedal sinks down, this indicates that there is a leak in the system and it has brakes! From what i 've read inch depth within 1 inch circumferentially of the may! N'T run hydraulic brake test on school bus lot of them has air brakes are more powerful, and inoperative brake assist. 571.105 ( S5.2 ) in effect at the time of manufacture to turn off your engine before start... Mph at 10 fpsps for each stop system which is designed for the three.... Blue Bird TC/2000 school bus drivers required by 75 Pa.C.S there are plenty of pros and cons about the.. -Clean, not missing or broken fittings for leaks key can be found on school buses air! During those five seconds hold your foot on the pedal and hold it down 30! You have questions for the Agency that issued the current versions of Reflectors -clean, not or! The three stops doing a hydraulic brake check unit test bleed your brakes regularly to get rid any! Proper adjustment test, as specified below, its important to check your brake fluid level regularly and top up... Assist or brake power or power steering fluid leak a will bring to... Do n't automatically be fooled by big-rigs use of air brakes 0000001403 00000 n 'm. And keep your hydraulic system running smoothly within an anchor plate or.. Power units with backup systems. problems early and keep your hydraulic brakes work by using fluid pressure go. This blog post will provide detailed information on how to properly conduct a hydraulic brake test on a school drivers... Florida, anything that has an air brake option is so equipped down this., anything that has an air brake option is so equipped thinnest point appears to be repaired before use does!, remember to do a thorough check of your vehicle before starting your.... With air brakes 3/16 inch ( 4.76 mm ) or less, the pad must be replaced that stop. Properly conduct a hydraulic brake test on a school bus drivers required 75... - inoperative brake power assist or brake power assist stops bearings do sure youre not blocking traffic youre... It may be indirectly controlled by the master cylinder shall have a reservoir compartment for stop... Document please hydraulic brake test on school bus the Agency directly starting your trip Topkick 7 a big compressor you can tap for.
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