United States Department of Transportation
i
Air Conditioning Modifications for the GMC RTSII Series 01 Coach (Model TH-8201)
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1982-10-01
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[PDF-3.77 MB]
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Abstract:As part of its bus and paratransit technology research and development efforts, the Urban Mass Transportation Administration is conducting the Bus Subsystems Technology Project to help the transit bus industry solve serious equipment problems. The principal objective of this project is to reduce the recurring costs necessary to operate the U.S. bus fleet by developing improved subsystem technologies that can be adopted by operators and manufacturers in the near future. Air conditioning and ventilating system problems are some of the most urgent problems of the transit operator in terms of general reliability, maintainability, and efficiency. In an effort to improve the air conditioning system, a number of transit properties have made modifications to their coaches. Of these properties, VIA Metropolitan Transit of San Antonio, Texas, has devised, implemented, and tested modifications for their General Motors RTS II Series 01 advanced design bus. The primary objective of the modifications was to reduce bus air conditioning failures. This report presents the documentation and evaluation of air conditioning modifications devised by VIA Metropolitan Transit for the General Motors RTS II Series 01 advanced design bus. Major modifications include replacement and relocation of the condenser, replacement of certain components, including the compressor, and alteration of the control system. The documentation of the air conditioning modifications consists of detailed narrative descriptions, photographs and drawings (with major reference dimensions), a parts list, and procedures. The baseline bus, for which the modifications are applicable, is described together with a discussion of the objectives and goals of the modifications. The documentation material is sufficiently detailed so that other transit properties, if they so choose, may implement the same changes to their coaches. the air conditioning modifications focuses on their impact on component reliability and fuel economy. Data for the evaluation are from records normally maintained by VIA Metropolitan Transit. These records include repair history cards, fuel consumption records, and bus mileages.
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