Bus and Coach Rear Drive Axles Revised 06-16
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Maintenance Manual 23A Bus and Coach Rear Drive Axles Revised 06-16 59000 Series 61000 Series 71000 and 79000 Series RC-26-700 Series Service Notes About This Manual How to Obtain Additional Maintenance, This manual provides maintenance and service information for the Service and Product Information Meritor 59000, 61000, 71000, 79000, RC-23-160 and Visit Literature on Demand at meritor.com to access and order RC-26-700 Series bus and coach rear drive and center axles and T additional information. Series parking brake. Contact the Meritor OnTrac™ Customer Call Center at Before You Begin 866-668-7221 (United States and Canada); 001-800-889-1834 (Mexico); or email [email protected]. 1. Read and understand all instructions and procedures before you begin to service components. If Tools and Supplies are Specified in 2. Read and observe all Warning and Caution hazard alert This Manual messages in this publication. They provide information that can Contact Meritor’s Commercial Vehicle Aftermarket at help prevent serious personal injury, damage to components, 888-725-9355. or both. 3. Follow your company’s maintenance and service, installation, Kiene Diesel Accessories, Inc., 325 S. Fairbanks Street, Addison, IL 60101. Call the company’s customer service center at and diagnostics guidelines. 800-264-5950, or visit their website at kienediesel.com. 4. Use special tools when required to help avoid serious personal injury and damage to components. SPX/OTC Service Solutions, 655 Eisenhower Drive, Owatonna, MN 55060. Call the company’s customer service center at Hazard Alert Messages and Torque 800-533-6128, or visit their website at otctools.com. Symbols Wright Tool Company, 1738 Maplelawn, Troy, MI 48084. Call the company’s sales and service department at 800-783-9826 or visit their website at [email protected]. WARNING A Warning alerts you to an instruction or procedure that you Lined shoe kits and brake hardware kits are available. You also can must follow exactly to avoid serious personal injury and obtain the following conversion kits. damage to components. ț A kit to convert Q Series cam brake shoes (except models with cast shoes) to Q Series brakes with “quick change” shoes CAUTION ț A kit to convert standard 16.5-inch Q Series cam brakes to A Caution alerts you to an instruction or procedure that you Q Plus™ cam brakes must follow exactly to avoid damage to components. @ This symbol alerts you to tighten fasteners to a specified torque value. Information contained in this publication was in effect at the time the publication was approved for printing and is subject to change without notice or liability. Meritor Heavy Vehicle Systems, LLC, reserves the right to revise the information presented or to discontinue the production of parts described at any time. Meritor Maintenance Manual 23A (Revised 06-16) Contents pg. i Asbestos and Non-Asbestos Fibers pg. 27 Inspect Parts Tapered Roller Bearings 1 Section 1: Exploded Views 29 Brakes 59000 Series Rear Axle Brake Drums 3 61000 Series Rear Axle Bushings and Linings 5 71000 and 79000 Series Rear Axle Camshaft 7 RC-23-160 Series Rear Axle Disc Brake Caliper and Brake Pads 9 T Series Parking Brake — 59000 Series Rear Axle Disc or Rotor 10 Section 2: Introduction 31 Applying Adhesive and Silicone Gasket Material Models Covered Silicone Gasket Material Description Repair Welding on Axle Housings Rear Axles Do Not Bend or Straighten a Damaged Drive Axle Housing 11 Center Axles 32 Section 5: Assembly and Installation T Series Parking Brake Installation Guidelines 12 Identification Preparation of Axle 15 Section 3: Removal and Disassembly Installation Removal Magnets to Axle Housing Axle Shaft Removal Methods 33 Breathers 16 Differential Carrier from the Axle Housing 34 Differential Carrier into the Axle Housing 18 Axle Shafts from the Axle Housing POSE™ Seal Hub and Drum Assembly or Hub and Rotor Assembly from 35 Yoke the Axle Housing 36 Assembly 19 Disassembly Hub with W-Series Brakes Without ABS: 59000, 61000, Hub Assembly Without ABS: 59000, 61000, 71000, 71000, 79000 and RC-26-700 Series 79000 and RC-26-700 Series 37 Brake to the Housing Without ABS: 59000 and 61000 20 Hub Assembly with ABS: 59000, 61000, 71000, 79000 Series and RC-26-700 Series Hub to the Axle Without ABS: 59000, 61000, 71000, Hub Assembly with Drum Brakes: RC-23-160 Series 79000 and RC-26-700 Series 21 Hub Assembly with Disc Brakes: RC-23-160 Series Hub with W-Series Brakes with ABS: 59000, 61000, Brakes from the Housing Without ABS: 59000, 61000, 71000, 79000 and RC-26-700 Series 71000, 79000 and RC-26-700 Series 38 Hub with Drum Brakes: RC-23-160 Series Brakes from the Housing: 59000, 61000, 71000, 79000 39 Brake to the Housing with ABS: 59000, 61000, 71000, and RC-26-700 Series with ABS 79000 and RC-26-700 Series 22 Drum Brakes from the Housing: RC-23-160 Series 40 Hub to the Axle with ABS: 59000, 61000, 71000, 79000 Disc Brakes from the Housing: RC-23-160 Series and RC-26-700 Series 23 Removal Brake to the Housing with Drum Brakes: RC-23-160 Axle Tube: 59000, 61000, 71000 and 79000 Series Series 24 Parking Brake Shoes Hub to the Axle with Drum Brakes: RC-23-160 Series 25 Camshaft 41 Hub with Disc Brakes: RC-23-160 Series 26 Torque Rod Brackets: 61000 Series Axles with Cast Brake to the Housing with Disc Brakes: RC-23-160 Series Housing, and 71000 and 79000 Series Axles 42 Hub to the Axle with Disc Brakes: RC-23-160 Series 27 Section 4: Prepare Parts for Assembly Drum to Hub with W-Series Brakes: 59000, 61000, Clean, Dry and Inspect Parts 71000 and 79000 Series Ground and Polished Parts 43 Adjustment Rough Parts Wheel Bearings Dry Cleaned Parts 45 Installation Prevent Corrosion on Cleaned Parts Axle Tube: 59000 and 61000 Series Contents pg. 46 Torque Rod Brackets: 61000 with Cast Housing, and pg. 71000 and 7900 Series Axles Camshaft 47 T Series Parking Brake 50 Lubrication Fill the Axle with Lubricant 51 Section 6: Diagnostics Troubleshooting 52 Section 7: Lubrication Lubrication Camshaft Bushings Camshaft Splines Anchor Pins 53 Shoe Rollers Axle 56 T Series Parking Brake Grease-Lubricated Wheel Ends 57 Section 8: Specifications Torque Specifications Asbestos and Non-Asbestos Fibers Figure 0.1 ASBESTOS FIBERS WARNING NON-ASBESTOS FIBERS WARNING The following procedures for servicing brakes are recommended to reduce exposure to The following procedures for servicing brakes are recommended to reduce exposure to asbestos fiber dust, a cancer and lung disease hazard. Material Safety Data Sheets are non-asbestos fiber dust, a cancer and lung disease hazard. Material Safety Data Sheets available from Meritor. are available from Meritor. Hazard Summary Hazard Summary Because some brake linings contain asbestos, workers who service brakes must understand the Most recently manufactured brake linings do not contain asbestos fibers. These brake linings may potential hazards of asbestos and precautions for reducing risks. Exposure to airborne asbestos contain one or more of a variety of ingredients, including glass fibers, mineral wool, aramid fibers, dust can cause serious and possibly fatal disea ses, including asbestosis (a chronic lung disease) ceramic fibers and silica that can present health risks if inhaled. Scientists disagree on the extent of the risks from exposure to these substances. Nonetheless, exposure to silica dust can cause and cancer, principally lung cancer and mesothelioma (a cancer of the lining of the chest or silicosis, a non-cancerous lung disease. Silicosis gradually reduces lung capacity and efficiency abdominal cavities). Some studies show that the risk of lung cancer among persons who smoke and can result in serious breathing difficulty. Some scientists believe other types of non-asbestos and who are exposed to asbestos is much greater than the risk for non-smokers. Symptoms of fibers, when inhaled, can cause similar diseases of the lung. In addition, silica dust and ceramic these diseases may not become apparent for 15, 20 or more years after the first exposure to fiber dust are known to the State of California to cause lung cancer. U.S. and international asbestos. agencies have also determined that dust from mineral wool, ceramic fibers and silica are potential causes of cancer. Accordingly, workers must use caution to avoid creating and breathing dust when servicing brakes. Specific recommended work practices for reducing exposure to asbestos dust follow. Consult your Accordingly, workers must use caution to avoid creating and breathing dust when servicing brakes. Specific recommended work practices for reducing exposure to non-asbestos dust follow. Consult employer for more details. your employer for more details. Recommended Work Practices Recommended Work Practices 1. Separate Work Areas. Whenever feasible, service brakes in a separate area away from other operations to reduce risks to unprotected persons. OSHA has set a maximum allowable level of 1. Separate Work Areas. Whenever feasible, service brakes in a separate area away from other operations to reduce risks to unprotected persons. exposure for asbestos of 0.1 f/cc as an 8-hour time-weighted average and 1.0 f/cc averaged over a 30-minute period. Scientists disagree, however, to what extent adherence to the maximum 2. Respiratory Protection. OSHA has set a maximum allowable level of exposure for silica of allowable exposure levels will eliminate the risk of disease that can result from inhaling asbestos 0.1 mg/m3 as an 8-hour time-weighted average. Some manufacturers of non-asbestos brake linings recommend that exposures to other ingredients found in non-asbestos brake linings be dust. OSHA requires that the following sign be posted at the entrance to areas where exposures kept below 1.0 f/cc as an 8-hour time-weighted average.