Commercial Vehicle Safety Alliance

Date d’inscription	16 février 2015
Numéro de l’enjeu	15-007-VEH
Nom	Barry Bertoli
Organisme	Commercial Vehicle Safety and Enforcement
Adresse	4791 23rd StreetVernon, British Columbia, V1T 4K7CanadaVoir sur la carte (s’ouvre dans un nouvel onglet)
Téléphone	250-833-6456
Télécopieur	(250) 503-3631
Courriel	[email protected]
Comité	Comité des véhicules
État	Fermé
Résumé de l’enjeu	CVSA OOS 1er avril 2015, Section 9, sous-section F, direction : OOS si le vérin d'assistance de direction est desserré. Nous avons constaté des cas où le propriétaire a enlevé le vérin et bouché les conduites. Il serait judicieux que l'équipe du siège social de CVSA inclue le vérin manquant dans la CVSA OOS. Le premier problème a été signalé par un camion-citerne (1203) de ma région. J'ai ordonné la réparation du véhicule, même si, à ce moment-là, l'essieu supportait 9 100 kg (20 000 lb) avec des pneus de 445.
Justification ou besoin	J'ai personnellement remarqué ce problème à deux reprises en deux ans, sur le vérin auxiliaire fixé au porte-fusée droit. Ce vérin est généralement présent sur les essieux d'une capacité de 8 600 kg (18 959 lb) et plus. Lorsqu'il commence à fuir, il est simplement démonté et les conduites sont bouchées.
Demande d’action	Je pense qu'une condition OOS devrait être incluse dans la section 9, sous-section F, direction, si le cylindre est manquant lorsque requis par le fabricant d'origine.
Mesures prises par le comité	At the meeting in Jacksonville it was suggested that a missing auxiliary cylinder only makes it harder to steer but it is not an imminent hazard. It is more of a requirement to be there to assist a driver in a stationary position or at low speeds in construction zones, etc. That led to the committee wondering whether the loose cylinder should even be in the OOS. The discussion was around why it was put in the OOS originally as it has been in their since the beginning. It was suggested that it was in there for so long that it may have been intended for the older air assist cylinders. Steve Howse had spoken to representatives at TMA and brought back information that the power steering box provides 60% of the assist to the steering in these cases and at road speeds the assist has virtually no impact to the driver. The absence of the power assist cylinder will reduce the life of the steering box due to turns at low speeds, however that is a maintenance issue and should not be an OOS violation. It was reported that a missing cylinder would not be considered an imminent hazard. There was a motion made to delete the condition of a loose auxiliary power assist cylinder from OOSC based on the information. However, during discussion it was determined that a significantly loose or detached cylinder could get wedged in the steering mechanism and cause steering interference, but a slightly loose cylinder is not an OOSC. The motion failed. Steve Howse contacted his sources to determine if it should be removed or amended in the OOS. Steve reported the following day that a very loose cylinder could have impact as discussed. The committee voted to amend the current language in the OOS to quantify how loose the cylinder should be to be considered OOS. The language used is consistent with the language the committee has used to determine the looseness of an air reservoir. This language takes into consideration a loose nut and bolt which does not provide movement of more than an inch. The committee voted unanimously to amend the existing language to only include cylinders that are significantly loose but not those that may just have a slightly loose mounting. The amendment is as follows: f. Power Steering Auxiliary power assist cylinder separated at either end from the attachment point(s) allowing movement of more than one inch (25.4 mm) in any direction.(393.209(e)) NOTE: The motion was passed by Executive Committee.

Date d’inscription

16 février 2015

Numéro de l’enjeu

15-007-VEH

Nom

Barry Bertoli

Organisme

Commercial Vehicle Safety and Enforcement

Adresse

4791 23rd StreetVernon, British Columbia, V1T 4K7CanadaVoir sur la carte

Téléphone

250-833-6456

Télécopieur

(250) 503-3631

Courriel

[email protected]

Comité

Comité des véhicules

État

Fermé

Résumé de l’enjeu

CVSA OOS 1er avril 2015, Section 9, sous-section F, direction : OOS si le vérin d'assistance de direction est desserré. Nous avons constaté des cas où le propriétaire a enlevé le vérin et bouché les conduites. Il serait judicieux que l'équipe du siège social de CVSA inclue le vérin manquant dans la CVSA OOS. Le premier problème a été signalé par un camion-citerne (1203) de ma région. J'ai ordonné la réparation du véhicule, même si, à ce moment-là, l'essieu supportait 9 100 kg (20 000 lb) avec des pneus de 445.

Justification ou besoin

J'ai personnellement remarqué ce problème à deux reprises en deux ans, sur le vérin auxiliaire fixé au porte-fusée droit. Ce vérin est généralement présent sur les essieux d'une capacité de 8 600 kg (18 959 lb) et plus. Lorsqu'il commence à fuir, il est simplement démonté et les conduites sont bouchées.

Demande d’action

Je pense qu'une condition OOS devrait être incluse dans la section 9, sous-section F, direction, si le cylindre est manquant lorsque requis par le fabricant d'origine.

Mesures prises par le comité

At the meeting in Jacksonville it was suggested that a missing auxiliary cylinder only makes it harder to steer but it is not an imminent hazard. It is more of a requirement to be there to assist a driver in a stationary position or at low speeds in construction zones, etc. That led to the committee wondering whether the loose cylinder should even be in the OOS. The discussion was around why it was put in the OOS originally as it has been in their since the beginning. It was suggested that it was in there for so long that it may have been intended for the older air assist cylinders.

Steve Howse had spoken to representatives at TMA and brought back information that the power steering box provides 60% of the assist to the steering in these cases and at road speeds the assist has virtually no impact to the driver. The absence of the power assist cylinder will reduce the life of the steering box due to turns at low speeds, however that is a maintenance issue and should not be an OOS violation. It was reported that a missing cylinder would not be considered an imminent hazard.

There was a motion made to delete the condition of a loose auxiliary power assist cylinder from OOSC based on the information. However, during discussion it was determined that a significantly loose or detached cylinder could get wedged in the steering mechanism and cause steering interference, but a slightly loose cylinder is not an OOSC. The motion failed. Steve Howse contacted his sources to determine if it should be removed or amended in the OOS. Steve reported the following day that a very loose cylinder could have impact as discussed.

The committee voted to amend the current language in the OOS to quantify how loose the cylinder should be to be considered OOS. The language used is consistent with the language the committee has used to determine the looseness of an air reservoir. This language takes into consideration a loose nut and bolt which does not provide movement of more than an inch.

The committee voted unanimously to amend the existing language to only include cylinders that are significantly loose but not those that may just have a slightly loose mounting. The amendment is as follows:

f. Power Steering Auxiliary power assist cylinder separated at either end from the attachment point(s) allowing movement of more than one inch (25.4 mm) in any direction.(393.209(e))

NOTE: The motion was passed by Executive Committee.

OOSC, Partie II, Article 9. Mécanismes de direction - Vérin d'assistance à la direction