Recommended Practice
Transit Bus Air Disc Brake Operation and Wheels-On Inspection
Abstract
This document establishes a recommended practice for wheels-on transit bus front/rear axle pneumatic disc brake inspection. Individual operating agencies should modify these guidelines to accommodate their specific equipment and mode of operation.
Document History
| Document Number | Version | Publication Date | Publication | Related Information |
|---|---|---|---|---|
| APTA BTS-BC-RP-006-17 | 01/26/2017 | Published | Current |
Keywords
ABS tone ring, boot, bridge, bushing, caliper, carrier, disc, disc brake maintenance, hub, pads, pin, rotor, potentiometers, retaining strap, seal, slide pins, spring clips wheel seals, torque plate, wear indicator, wear sensors
Summary
This Recommended Practice provides guidelines for performing wheels-on brake maintenance on a bus with air disc brakes, including inspection and troubleshooting. This document is to be used in conjunction with the manufacturer’s service manual. It is recommended that all components be replaced
equally on both wheel ends of the axle. Failure to do so may affect braking performance. The following recommended practices and guidelines assume that the end users have sufficient skills and knowledge to repair and maintain the related systems at a journeyman level. This must include a fluent understanding of
safe shop working practices, not only for the agency but also OSHA/CCOHS/provincial/federal/state and local safety standards. A familiarity with applicable industries, component/system suppliers and vehicle manufacturers is also assumed.
equally on both wheel ends of the axle. Failure to do so may affect braking performance. The following recommended practices and guidelines assume that the end users have sufficient skills and knowledge to repair and maintain the related systems at a journeyman level. This must include a fluent understanding of
safe shop working practices, not only for the agency but also OSHA/CCOHS/provincial/federal/state and local safety standards. A familiarity with applicable industries, component/system suppliers and vehicle manufacturers is also assumed.
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