GLAVAL BUS Download PDF Report
Glaval Bus, Division of Forest River, Inc. submitted a model GMC 5500, diesel-powered 32 seat (including the driver) 32-foot bus, for a partial STURAA test in the 10 yr/350,000 mile category. The Federal Transit Administration determined that the following tests would be performed: 1.2 Servicing, P.M. Repair & Maintenance, 2. Reliability and 5.7 Structural Durability Test. Testing started on April 28, 2005 and was completed on August 26, 2005. The Check-In section of the report provides a description of the bus and specifies its major components.
The primary part of the test program is the Structural Durability Test, which also provides the information for the Maintainability and Reliability results. The Structural Durability Test was started on April 29, 2005 and was completed on August 26, 2005.
The test bus is built on a GMC 5500 chassis. The interior of the bus is configured with seating for 32 passengers including the driver. Free floor space will accommodate 16 standing passengers resulting in a potential load of 48 persons. At 150 lbs per person, this load results in a measured gross vehicle weight of 21,750 lbs. In order to avoid exceeding the GAWR (13,500 lbs) of the rear axle, ballast for 10 standing passengers was eliminated. This reduction from full capacity resulted in an adjusted measured gross vehicle weight of 19,670 lbs and was used for all dynamic testing. The middle segment was performed at a SLW of 18,530 lbs and the final segment was performed at a CW of 13,610 lbs. Durability driving resulted in unscheduled maintenance and failures that involved a variety of subsystems. A description of failures, and a complete and detailed listing of scheduled and unscheduled maintenance is provided in the Maintainability section of this report.
The Reliability section compiles failures that occurred during Structural Durability Testing. Breakdowns are classified according to subsystems. The data in this section are arranged so that those subsystems with more frequent problems are apparent. The problems are also listed by class as defined in Section 2. The test bus encountered no Class 1 failures. Of the twenty-four reported failures, 3 were Class 2, fourteen were Class 3 and 7 were Class 4.