School bus brake chamber


School bus brake chamber

check shock absorber c. ) Turn the bus off. The brake chamber pushes directly on a wedge to move the brake shoes against the brake drum, thus eliminating the need for an “S” cam. Industiral and Management Systems Engineering Department University of South Florida FDOT Project BC137-RPW032 CUTR Account 2117-473-LO 1) Air Brake Chamber - Properly clamped and bolted to the bus, not leaking, cracked or dented. 22 Jul 2015 School Bus Inspection. S. Brake Hoses: frayed, cracked or rubbing hoses. TEST 1: Parking brake test. Low prices on Brake Parts for Bluebird Bus. Check for wet or shiny areas on hoses and/or • *Brake chamber • *Slack adjustor • Drum/rotor/disk Rear of Trailer • Doors/ties/lift • Splash guards • Lights/reflectors/ABS ALL PASSENGER VEHICLES PASSENGER ITEMS • Passenger entry/lift • Emergency exits • Seating BAGGAGE COMPARTMENT • Doors/compartments SCHOOL BUS (ONLY) STUDENT LIGHTS • Student lights STUDENT SAFETY ITEMS Produt Name: Brake Chamber, Part Number: GC3036LCW, Description: CHAMBER, 30/36 L/H 225WELD 045 135 (DIRECT FIT 2. September 1, 2009 Dual Air Brake System (DAS) Inspection; Emergency Stopping/Brake System . Pads. A defective brake includes any brake that meets one of the following criteria. Check for rust  The air brake chambers are what convert the air pressure force into mechanical push rod force which engages the brake shoes of the foundation brake system. Air Brake Slack Adjuster: missing cotter keys on the pins. Red loading/unloading lights and stop arm will come on when you open door FREE 2020 Texas (TX) Air Brakes Practice Test 3 2020 TX Air Brakes Information Most commercial vehicles utilize an air brake system over the traditional hydraulic brake system of passenger cars due to the "unlimited" supply the included air compressor and storage tanks can create. (Example: Type 30 clamp type brake chamber pushrod measured at 2-1/4 inches (57mm) would be one defective brake. North Carolina School Bus Driver Handout . On vehicles equipped with cam brakes, mark each brake chamber push rod at the. ” Regardless of Air Brake Chamber: loose or missing bolts. check hub oil seal 10. 5. Cut Out Test 5. 47(e)) (b) Two brakes less than 1/4 inch (6mm) beyond the adjustment limit also equal one defective brake. . . With an assistant using the brake pedal to apply 80 to 100 pounds of air pressure, remove the locking pliers The air brake system is actually three separate systems :- SERVICE BRAKE: This system applies and releases the brakes when the driver pushes/releases the brake pedal. Loading Autoplay When autoplay is enabled,  17 Mar 2011 Jefferson County Public Schools in Colorado produced this video on air brake design and operations for school buses. STEP I. Check for wet or shiny areas on hoses and/or 3. Blue Bird Brakes. Reconnect the air lines to the chamber, and put the clevis pins and cotter pins back in place. Shoe construction (25) 3. check drum or rotor 2. 28 Sep 2012 Virginia School Buses issued by the Department of Education. Brake chambers are known by many terms including air brake chambers, maxi chambers, brake cans, and spring brakes. brake drum brake hoses/lines brake chamber slack adjuster - 1 inch. Cut In Test 4. Quick-Release Valves. Start the bus and let the air pressure build to at least 90 psi. The purpose of the Nevada School Bus Out of Service Criteria is to identify defects on a school bus that would require the school bus be placed out-of-service. TEST 2: Applied pressure test. Service Brake. these are used to adjust and take the slack out of the brakes caused by usual wear on the brakes The internal components are different from a traditional brake chamber. - East (PA): 1-800-523-6000, Midwest : 1-800-234-2829 School bus brakes are extremely important to maintain as your riders are counting on you to drive them safely! Shop our performance friction brakes, rotors, and brake shoe kits. NC GS 20-4. External Checks 1. Relay Valve for Parking Brake System. ___ Splash Guards. Master Cylinder. 1 Brake Release and Adjustment When the vehicle brakes are released, the air pressure in the service brake chamber is exhausted and the return springs in the chamber and the bridge return the air disc brake to a neutral, non-braked Now if you're going to a driving school and you're upgrading your license as part of your pre-trip inspection when you do your road test you're gonna do your practical air brake test at that point. 1 requires that trailers have a reservoir capacity that is at least eight times the Repair Time Standards for Transit Vehicles Final Report September 24, 2002 Submitted by: Grisselle Centeno, Ph. 4. The driver must realize this and each time the driver school bus inspection manual school bus inspection unit . Brake Levers. LK2832 . Study Guide Hand Out Sees that brake chambers are not leaking, cracked or dented, and are mounted securely. 5) Type 30 Brake Chamber equipped with manual slack adjusters has a maximum allowable push rod travel of 1 3/4 inches (44 mm). as well as the impacts of the Coronavirus may cause unavoidable delivery service delays. Pushed In make offer - 2003 ic school bus t444e turbo diesel 72 pass air brake allison auto trans 2009 Blue Bird School Activity Bus Skoolie RV motor home 8. Service Brake Chamber Bridge Pressure Plate Diaphragm FIGURE 6-CROSS-SECTION VIEW SHOWING BRAKE OPERATION 1. check brake hoses 1. LK2823 . DiscStar VS OEM Pads Slight exceptions are provided in Table V—Brake Chamber Rated Volumes, so that vehicle manufacturers can install long-stroke brake chambers in place of standard-stroke brake chambers without having to increase the size of the reservoirs. BRAKE SYSTEM A. 2) Break Hose - properly clamped, no LBKs, ABS wire not FLED, casing is not worn or cracked. When the driver steps on the brake pedal, a signal is sent to a relay valve that then sends air pressure to the service chamber of the spring brake. Read manufacturers’ instructions afterwards if you need help with brake adjustment, or consult a mechanic. 89–8. Remove the nut, washer and tool from the holder. Air Brake Chamber: loose or missing bolts. 19 Jul 2000 A bus door/service brake interlock system having a warning system is braking action to a rear or drive axle that includes brake chambers 20. Click here for main brake page. Attend Bendix Brake School or visit Damaged or improperly installed Spring Brake Chamber and/or Service Chambers. 075 requires the State Board establish policies to govern the administration of all functions of the State relating to supervision, A transit bus’ parking brake valve button pops out immediately after being depressed. -Excessive water in reservoirs. In a dual air brake system, will the vehicle continue to have braking ability if one circuit fails? 4. check brake chamber (air brake) d. Continuing use of the site implies consent. 5. IH Brakes . Brake Hoses/  such as school buses. To provide a better shopping experience, our website uses cookies. 1(a) With an initial service brake chamber air pressure of 95 psi, the air pressure in each brake chamber shall, when measured from the first movement of the service brake control, fall to 5 psi in not more than 0. Storage Tank. A school bus or multi-function school activity bus will not pass the brake inspection if it has one (1) or more of the following defects or deficiencies: A. Air Disc Brakes TRB double-diaphragm spring brakes offer the added feature of an external breather tube that vents air from the inside protected area of the service chamber to effectively reduce entry of liquid and solid contaminants that can cause premature failure of the spring brake chamber; and a heavy-gauge formed steel mounting base, making the TRB model the perfect choice for tough CALL US TOLL FREE - U. Calipers. Static Test 6. Our long stroke heavy-duty brake chambers provide consistent braking under all conditions plus provide additional parking force required for the parking of buses on Control Relay for Electric Pump on a Type 4 Hydro Max Brake Booster for 1980 - 94 Ford School Bus Chassis. During the course of this training program we will demonstrate many important brake tests, the maintenance of brakes and the difference between hydraulic and air brakes. Disc brakes are still another variation in that the air chamber mechanically operates a caliper that is used to clamp “pads” against a “disc” that Park Brake Valves. Brakes. The brake linings on a school bus must be con- structed and installed to avoid excessive fading and grabbing. Step 6 - Place Brake Chamber In. Procedures brake. Service Brakes: 1. Part No. Call us School Bus Nationwide, school bus uptime is a must. Shoes. Study 26 Bus Inspection redo2 flashcards from Carrie C. Parking Brake Tests - With same size chambers , disc  Bus Applications for Bendix Brake Pads . 01(27d4) defines a school bus as, “a vehicle whose primary purpose is to transport Brake chamber – securely mounted, no cracks or dents, not. BRAKING SYSTEM • Hydraulic • Air Pressing on the brake pedal forces fluid or air into the brake cylinder or air chamber. × 50% off pads from Zimmerman, OEM supplier to VW, originally $49. within three (3) days of the last working school day. Absence of braking action on any axle required to have brakes upon application of the service Where is the slack adjuster located on a school bus with air brakes? Top Answer. Inside the Bus. For 2004-2018 Blue Bird Vision School Bus Brake Pad Set Wagner 51292YS 2005 2006 (Fits: Blue Bird Vision School Bus) The brake lining/pad thickness on the steering axle of a truck, truck-tractor or bus shall not be less than 4. The spring is compressed to release the brakes. Parking Brake System: 1. M. For Parking Brakes Brake Cables. -Leaking tubing or hose line. ) (393. Return to Top. Name two functions of the spring parking brakes in a dual air brake system. slack adjuster is the adjuster on the brakes of vehicles with air brakes. #121 criteria @ 28,660# axle load: air disc brake; type 24 chamber; and a 18. The force of the brake application is dependent on the  1 Feb 2001 The service brake chambers found at each wheel simply convert air pressure that comes Wedge brakes are rarely used on school buses. The bus used in the video is a conventional school bus with a dual air brake system. Regular Price: €83. Raybestos School Bus Disc Brake Pads provide the safety and dependability to keep your fleet on the road and on time. g, school or transit bus). 50-2. 00 On the chamber itself, you'll find the internal hex pipe plug. 3a) Push Rod - Not bent or twisted. Used Hydraulic Park Brake Cylinder or SAHRs unit for International/IC, 2005+. Defective Brakes: The number of defective brakes is equal to or greater than 20 percent of the service brakes on the bus. revision date: 2013 brake chamber data. Wedge brakes are rarely used on school buses. No brakes on the vehicle or combination   18 Dec 2017 These braking systems are utilized in tractor-trailers, school buses, trains Essentially, the air and the springs in the brake chamber provide an  School Bus Engine Pre-Trip Parts Midland College, Cdl Test, Bus Engine, School Bus Driving, Truck Driving Jobs, Air Brake, Drum Brake, Drivers. -50%. Figure 12 illustrates the common S-cam brake assembly used on truck and trailer axles. Great Selection - buy online today! Local restrictions and curfews in certain areas across the U. Brake Shoes. We also include brake lubricants and brake chamber pancakes to ensure your school bus brakes are performing at their very best. NRS 385. Aug 11, 2014 · 7 Air Brake Tests. do air brake check 5. 320, School Bus Inspection, will also be inspected on all school buses. OEM #3579487C96 or Reading Air Brake Diagrams TP2006 September 2001 4 PART I: PARTS OF AN AIR BRAKE DIAGRAM The design of any air brake valve is more easily understood by recognizing some major components and parts. 8 mm ( 3/16 inch) at the shoe center for a shoe with a continuous strip of lining; less than 6. Ford Brakes. Click here for S5. Shaded area indicates non-compliance. Each air brake chamber contains a pressure bleed valve and a push rod. Brake Chamber Operation Review Spring brake applied No air applied to the chamber. Sep 12, 2017 · The front brake air chambers are solid steel housings connected to an air compressor. Park Brakes - DD3 Brake Chambers. Properly Mounted and Secure. Measurement & Visual Inspection. Follow the procedure for commercial driver's license pre-trip inspection. truck driver's pretrip inspection brake chamber Slack Adjuster and Push Rod-. REAR OF BUS. So the first step of the pre-trip inspection is to chock the wheels, make sure you have more than 90 psi in the system, and release the parking brakes. Brake safety is a priority for all school districts, and MGM offers brake chambers to assure quality and reliability every time. -Inadequate reservoir volume - high air demand. The s-cam or the cylinder moves the brake drum shoes outward against the brake drum SCHOOL BUS DRIVER’S GUIDE This school bus is equipped with an MGM Brakes e-STROKE system that will allow the bus driver to easily check the school bus brake system to ensure it is operating properly, or indicating wheel specific brake faults. 12. Air Chambers. Carefully pump brake pedal to eliminate brake fluid. Serving the Bus and Passenger Rail Industries for More than a Century 18 Dec 2008 Colorado's Jefferson County Public Schools teaches about air brakes for school buses. Intercity Truck, Interstate or Charter Bus (Shuttle or Tour Bus), Motor Home, Fire Truck Severe Duty School Bus, Transit Bus (City Coach), Refuse Hauler, Dump Truck, Cement Mixer, Logging or Mining Vehicles, Yard Truck, Other Non-Typical Use Vehicles Bendix® Service Chamber - For Air Disc Brakes and Foundation Drum Brakes Warranty Period 3 Years ¾ REMOVE & discard brake fluid. We offer a wide range of bus parts. check lug nuts i. The purpose of this bulletin is to clarify the Office of School Transportation’s recommendations and the statutorily required procedures for the inspection of the Federal Motor Vehicle Safety Standard (FMVSS) 571. ENERGY ACCUMULATOR ST92242400. If extended, the brakes   As you approach the school bus, have the key with you and be observant of the overall appearance of the features on the front of bus (lenses and windshield),  An air brake or, more formally, a compressed air brake system, is a type of friction brake for Air brakes are typically used on heavy trucks and buses. Also, we will Brakes -School Buses and Farm Labor Vehicles. Clamp Type Brake Chamber Data is not required for school bus operations MCI SERVICE INFORMATION . Wedge brakes may have a single brake chamber, or 2 brake chambers, pushing wedges in at both ends of the brake shoes. School bus air brake chamber. 4. 4 mm ( 1/4 inch) at the shoe center for a shoe with two pads; or worn to the wear indicator if the lining is so marked, for air drum brakes. 2. Slowly take your foot off the brake and gently press the accelerator. Technician A says that this could be caused by low system air pressure. Emergency Brake Test 2. (25) 1 . Spring Brake released Air applied to the parking or spring brake side of the chamber. For Hydraulic Brakes Boosters . 690–830 kPa or 6. 5 inch tire rolling radius. A point which is supported by the fact that they mounted the brake chamber to fall off in the first place. -Leaking brake valve. The following additional brake requirements shall apply to school buses and farm labor vehicles: (a) Air Brakes -Type 1 school buses having 10 or more rows of seats and manufactured after January 1, 1970, and prior to April 1, 1977, shall be equipped with full compressed air brakes. I didn't want Bus brake chamber. School Bus Pre-Trip Inspection Test External Checks School bus is parked with engine on, transmission in neutral, and parking brake set and chocks in place. Not Cracked, Bent, or Broken. regular stroke, and clamp versus roto, however a bolt chamber with any other is a mismatch). With that being said, every bus driver will need to accurately and meticulously ensure that the brakes on their school bus are safe. 27 bar) to the brake chamber, causing the brake to be engaged. We have all the parts, electronics, accessories, equipment and products you need for your school bus fleet. 0 INTRODUCTION The purpose of the Commercial Vehicle Enforcement Division School Bus Inspection Manual is to provide guidance for the inspection of public and non-public school buses and pupil transportation vehicles. 27 air brake system test procedure 28 school bus exterior mirror SCHOOL BUS OUT OF SERVICE CRITERIA 2009 I. Is there a difference between the foot valve used in a basic air brake system and the foot valve used in the dual air brake system? 5. Vehicle parked. An important reminder for all school bus drivers is to recognize that each school bus manufacturer will have a slightly different layout of switches, gauges and other component parts on the school bus. REAR SUSPENSION springs spring mounts shock absorber drive shaft. 95. Look and see that the adjuster is set at 90° (all adjusters must be at the same angle at all wheels). Check for rust around the chamber. 11. The bus should not move. When depressed, the brakes are released. 2nd Edition / School Bus Drivers / March 2018 SBTS-341 (rev 3 Brake Chamber – secure, not leaking, cracked, or (c) School Bus Inspector Qualifications 1. Turn on low beam head lights, 4-way flashers, amber loading/unloading lights and exit the bus. Applied Test 7. Bud Type Wheels. rear of bus3. the slack adjuster is will be located at the end of the pushrod which extends out from the brake chamber. FREE 2020 Washington (WA) Air Brakes Practice Test 3 2020 WA Air Brakes Information Most commercial vehicles utilize an air brake system over the traditional hydraulic brake system of passenger cars due to the "unlimited" supply the included air compressor and storage tanks can create. 1. check slack adjuster (air brake) 8. V. Front brake assemblies have the brake chamber and slack adjuster mounted on the backing plate because the steering action of the front axle would otherwise interfere. For trailers, S5. B. SCHOOL BUS INSPECTION MANUAL 1 V 2. They are used on the air brake system of heavy-duty vehicles. -Excessive leakage elsewhere in the air brake supply system. Relay Valves. For the service brakes (the ones used while driving for slowing or stopping) to be applied, the brake pedal is pushed, routing the air under pressure (approx 100–120 psi or 690–830 kPa or 6. MCI coaches, with the exception of the Renaissance coach, all use DD3 brake chambers on the drive axle for the Park Brakes. Low Air Alarm 3. SCHOOL BUS BRAKE SYSTEM ITEM AND METHOD OF INSPECTION POINT VALUE AND REQUIREMENT DESCRIPTION (#) DESIGNATES POINTS TO BE DEDUCTED 3. Any person licensed to inspect school buses by the Department of Public Safety under the Motor Vehicle Laws of Oklahoma prior to July 1, 2001, may be qualified to perform annual school bus inspections until July 1, 2014. OVERVIEW. Close. Step on the brake and hold k. D. When the park brakes are applied, air pressure is routed to the rear of the chamber that applies the brakes. Sort By: BRAKE CHAMBER TYP 20/24 KNORR BS9433 (81504106733) SKU: BE0000280 BUS PARTS. 55 second in the case of trucks and buses; 1. 1-24 TRP® Brake Chambers . (Example: Type 30 clamp type brake chamber pushrods measure - Two at 2-1/8 inches (54mm). start at right front tire 9. In air-operated disc brakes, air pressure acts on a brake chamber and slack adjuster, like S-cam brakes. Price with discount without VAT €41. Proper driving habits will increase bus efficiency and economy of operation as well as pro-long the life of the bus. brake lights, back-up lights, red reflectors and yellow reflective tape(School Bus): * Brake Chamber/clamp: tight, secure, no cracks, welds, not leaking air, no damage. The smaller chamber size of air-disc brakes gave them the ability to recover faster in an ABS modulated stop. b) Check to be sure brakes are released (bus Any brake chamber mounting bracket is cracked, bent, or  50-2. bus. A. Wedge type brakes may be self-adjusting or may require manual adjustment. Brake Valves. turn on all lights and exit bus 7. When air is applied to the parking/emergency brake, the load of the heavy spring is released allowing the wheels to turn. The brake lining must be adequate in thickness, Air Brake Slack Adjuster: missing cotter keys on the pins. Service Brakes wheel brakes Driving of bus - school bus and not more air brake chambers,. 4) At the brake chamber, measure from the fixed point to the mark on the push rod. 3L Cummins Used Buses $14,950. 3b) Slack Adjuster - not bent or twisted, no missing nuts, bolts or cotter pins. vehicle (e. Chevrolet Brakes. Disc Brakes. Dec 12, 2008 · Release the parking brake and remove the caging tool from the air chamber’s dome. The push rods have a spring return on the interior and a pressure plate the spans the width and depth of the chamber. bus, school bus, special activity bus, special vehicle or limousine with a seating capacity of brake chamber mounting and retention clamps are secure • no  worn hoses leading to the brake chamber. Air brake chambers are round metal containers, located at each wheel A service brake chamber contains a flexible rubber disc called. ) Air Pressure Drops Quickly With Engine Stopped and Brakes Fully Applied-Leaking brake chamber, actuator, rotochamber or brake cylinder. School Bus  ___ Air Brake Check. 3. Brake shoes and drums. The chassis communications module (CCM) illustrated above with multicolored LED lights (green, Testing conducted in accordance with F. We are required to perform 7 air brake tests every day without fail: 1. 00 -Excessive leakage elsewhere in the air brake supply system. on StudyBlue. ¾ Remove parking brake spring chamber ¾ Remove bridge pipe from backing plate. SB3030SLW225, 00041403, HDX GC3030LCW, 3679384C91, 3541891C91, 2602422C91, ZZGC3030LCW, MGM 3230951X The 2019 Kentucky Minimum Specifications for School Buses was developed through the cooperative efforts of the State School Bus Specifications Revision Committee, which is composed of local district superintendents, transportation supervisors, driver training instructors and bus maintenance technicians. CHECK UNDER BUS FOR LEAKS. The purpose of the Nevada School Bus Out of Service Criteria is to identify A. Best pads you can buy. Piston The piston is the heart of the control valve. Push rod: A steel rod similar to a piston that connects the brake chamber to the slack adjuster. Foot valve: to draw compressed air from reservoirs when it is needed for braking; Brake chambers: to transfer the force of compressed air to mechanical linkages  and understand the school bus chassis and its compo- nents. More detailed pressure supply in the brake chamber to prevent front and rear wheel lockup. Hoses. 5 inches of caging tool exposed. valve) straight trucks and buses. C. ABS. This spreads the brake shoes against the brake drum. It'll be mounted on the clamp of the brake chamber. Sep 13, 2018 · Brake chamber size can be determined by locating size markings engraved on both the clamp and body of the chamber. Rotors. -Valve left open. 2. 6. 121 Standard No. (Dispose of brake fluid properly) ¾ Remove wheels, tires, drums, shoes and lining. check spring and mount 6. To perform these tests you will need to be in an open area and on level ground. 6) Type 30 Brake Chamber equipped with automatic slack adjuster has a maximum allowable push rod travel of 2" inches (5 cm). 121; Air Brake Systems (commonly known as the Dual Air or 121 system). With the brakes  19 Mar 2014 Air Lines & Hoses Brake Chamber Push-Rod Slack Adjuster Brake Linings Brake CDL College Truck Driving School Infographic Alley Dock. All school buses must have, at all times, four. Learn more about School Bus friction. Remove dust cover from brake chamber; Insert caging tool into chamber and turn 1/4 clockwise to seat the tool; Insert washer and nut; Tighten to about 2. Midwest Bus Parts 3030 Brake Chamber, 3 Long Stroke W/Welded Yoke [31-AB-3030LW3] - 3230951X - TR3030LP3, 179. Position brake chamber with the holes against mounting bracket so you can tighten the mounting nuts to the stud. Using Air Brakes. CHECK HUB OIL CHECK BRAKE CHAMBER (AIR BRAKE). Step on the brake pedal and put the bus into gear. DPSAFT School Bus Inspection. ___ Suspension. $21. Technician B says that this could be caused by air in the emergency chamber. ¾ Attach a tube to the bleeder screw. (With parking brake released. Parking or Spring brake is applied. 50. PARTS CATALOG FOR SCHOOL BUSES AND MORE! school bus parts experts; and the Parts and Service team at the Blue Bird home plant in Fort CHAMBER,BRAKE,AIR,TSE 30 school bus. 1. The video shows the air chamber applying the push rod connected to the slack adjuster to apply the brakes. Place other end of tube into container to catch brake fluid. MA212 is recommended for truck, tractor, trailer and school bus. Note, not all valves have all the components shown and described in this booklet. check rim 4. Slack Adjusters . AIR BRAKE CHAMBER 30/30 - SEALED - 3" LONG STROKE (SQUARE CAST AIR PORT BOSSES) T30, T-30 Service Brake Chamber No Clevis for Truck Trailer Bus Air Brakes. 2 Engine/Cab See that brake chambers are not leaking, cracked, or dented and are mounted securely. School Bus Parts Company has all your school bus parts needs, including BMR crossing gates and swing out stop arms, bus lettering, decals, lights, flashers, exhaust, bus seat covers, vinyl repair kits and school bus safety equipment. When the brake pedal is depressed, air from the compressor is pumped limit. Click here for product index page . Brake chambers are a device that allows compressed air to be converted into mechanical force. 00 second in the case of trailers, other than trailer converter dollies Got some 2 yr old IC's in yesterday they were ran in Michigan but on the rear brake chambers there is a small hose on the outside goes from the front of the chamber to the back none of our buses with air brakes have them and what is it for? (MINIMUM SCHOOL BUS BRAKE INSPECTION STANDARDS) 1. 00. Relay Valve for Parking Brake System on 1980-95 Ford School Bus Chassis with Lucas-Gurling Brakes. 25" ROD WITH WELDED YOKE) LONG STROKE (ROTATE FOR R/H OR L/H) BRAKE CHAMBER-SVCE/PRKG, RR DR Air pressure must be produced to release these "spring brake" parking brakes. Has 2 Blades. school bus brake chamber

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