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Informe de inspección de RAM: columna de dirección suelta

Fecha de registro16 de septiembre de 2010
Número de asunto10-031-VEH
NombreRandahl Mills
AgenciaVisionary Solutions
Dirección5002 A National Parks HighwaysCarlsbad, NM, 88220United StatesVer en el mapa (se abre en una pestaña nueva)
Teléfono575-682-0082
Correo electrónico[email protected]
ComitéComité de Vehículos
EstadoCerrado
Resumen del asunto

Inspección n.° CODN01004970 O/S Infracción de columna de dirección suelta escrita durante una inspección de nivel VI por el vehículo POE de Colorado colocado OOS bajo NAS OOS el 27 de junio de 2010. El tractor fue inspeccionado por un taller de reparación certificado de Freightliner. Consulte las notas proporcionadas por el taller de reparación con respecto a su revisión de la infracción señalada en el informe MCSAP CODN01004970. Esta unidad fue traída a nuestras instalaciones para una inspección del boletín de servicio 46-42 para el ajuste adecuado y el desgaste del recorrido libre. En nuestra opinión, esta unidad no está en riesgo de falla debido al movimiento de recorrido libre de lado a lado o arriba y abajo. La separación entre la placa lateral y el brazo de bloqueo es de 5.2 mm que se encuentra dentro de los valores mínimo y máximo aceptables del dispositivo de bloqueo. También inspeccionamos otra unidad de Visionarys unidad n.° 404 VIN n.° V20732, que también cumplió con los mismos criterios de aceptación. En nuestra opinión, como taller de reparación certificado de Freightliner, no se necesita ninguna reparación ni ajuste adicional en este momento; estas columnas de dirección cumplen con las directrices establecidas por el fabricante.

Justificación o necesidad

El informe de inspección del vehículo ha sido enviado al presidente del comité.

Solicitud de acción

Se tratará durante la reunión del Subcomité RAM.

Medidas adoptadas por el comité

This issue was originally submitted to the RAM subcommittee in relation to an OOS violation that was recorded on an inspection during a place of origin inspection. A video was shown that was taken at the time of inspection showing movement in the steering column area. There had been several emails and teleconferences related to this issue and additional information was provided indicating that at the time of inspection, the steering was taken apart and put back together by a mechanic, however, it was not re-inspected at that time by the inspecting officer. The vehicle was then taken to a repair facility where it was taken apart again and put back together. At that point the carrier indicated that the play was normal and there was nothing wrong with the condition of the column. It was suggested, that if this is the case, then the video should be able to be recreated if nothing was tightened.

Some attendees offered to try and get more information related to the steering column and what is considered acceptable play. The consensus was that the play indicated in the video did seem greater than what is normally seen during an inspection, however, more information is required. It was also suggested that this section of the OOS criteria may need to be updated once we receive information.

Tony Moore reported to the vehicle committee that he had reviewed the video with the design engineers and they agreed that the column/wheel movement shown in the video is neither normal nor acceptable. Even though the dealer may not have identified the root cause of the issue when they disassembled the column, they must have resolved the issue when they reassembled it if the movement was gone.

Regarding the repair done, this vehicle had a telescope/tilt steering mechanism made by Douglas Autotech. He stated that what they suspect is that during a service bulletin update that Freightliner issued, it described a procedure to check the tilt/telescoping locking force. What is suspected is that during execution of this service procedure something changed that affected the steering wheel end play. In performing the procedure the entire column is removed from the vehicle for adjustment, free play on the locking mechanism is set/checked, and then the column is reattached to the vehicle. During this process either the locking mechanism was tightened, or the 4 bolts that mount the steering column to the vehicle may have been loose and were tightened during the re-assembly.

In any case, the original condition of the vehicle was not acceptable. It was out of specification and required the repair.