This report presents the documentation and evaluation of air conditioning system modifications devised by Miami (Florida) Metrobus and Los Angeles SCRTD for the AM General Model B bus. The objective of these modifications was to reduce the frequency of bus air conditioning and related system failures. Major modifications included both relocation of, and replacement and relocation of, the A/C condenser, installation of new condenser fans and an additional alternator, and replacement of certain other air conditioning system components. The documentation of the air conditioning modifications discusses the extent of air conditioning related problems encountered in the operation of AMG buses and lists the agencies' goals and objectives in devising solutions to these problems. Narrative descriptions along with photographs, parts lists, procedures and costs for the modifications are given, with sufficient detail to permit other transit authorities having similar problems to implement these changes to their coaches should they desire to do so. The evaluation of the air conditioning modifications focuses primarily on system reliability. Data for the evaluation was extracted from existing maintenance and other records at Metrobus and SCRTD. These included road call reports, daily service reports, and bus repair history records.
This report presents the results of bus simulation studies to determine the effects of various design and operating parameters on bus fuel economy and...
This report culminates a two-year review of factors concerning the reliability of the Detroit Diesel Allison V730 automatic three-speed transmission f...
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United States Department of Transportation
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