Spyderbilt a écrit :tub a écrit :Ajax a écrit :
As-tu des slaques ajusteurs sur tes brakes 
Un ajustement avant de partir et tu auras l'esprit en paix et le portefeuille safe 
des slack ajuster automatique te pas suposer ajuster sa manuellement si il sont plus ajuster sa veux qui qui a un probleme quelque part et le fait de les ajuter manuellement fait juste repousser le probleme et sa peut devenir dangereux
qui te dit que t'ai pas supposer ajuster ca????tub sais tu pourquoi on appelle ca des slacks avec ajustements automatique?????c'est l'ajustement qui est automatique....pas le fonctionnement.....meme si ton slack s 'ajuste pas automatiquement, ben tu peux te coucher en dessous de ton truck ou de ton trailer, avec une clé 9/16 et tu les ajustent comme des slacks normals.....ayoye.........pis explique moi qu'est-ce qui a de dangereux la dedans dans un slack automatique qui s ajuste pus automatiquement mais qui est ajuster manuellement.......
faut vraiment pas savoir de quoi on parle........... 
justement t peut-être mieux de rester sur tes train
tien lis sa
NTSB: Don’t manually adjust automatic slack adjusters
By Jill Dunn
The National Transportation Safety Board has issued a warning that manually adjusting automatic slack adjusters is dangerous.
The board recommended Feb. 15 that the Federal Motor Carrier Safety Administration develop with the Commercial Vehicle Safety Alliance a North American Standard Inspection training materials module against this practice.
The FMCSA will work with the board to learn how often manual readjustment occurs and to keep this from happening, said Ian Grossman, FMCSA communications director.
“The agency has considered ways to deter manually adjusting automatic slack adjusters, but there is no information that indicates it is a widespread practice – though we do recognize that some drivers and mechanics do it,” Grossman said.
These adjusters are required on certain air-braked vehicles manufactured on or after Oct. 20, 1994. Motor carriers must ensure that the devices are properly maintained, Grossman added.
Manually adjusting automatic slack adjusters should be done only during installation or for an emergency move to a repair facility, the NTSB said.
Manual adjustment “fails to address the true reason why the brakes are not maintaining adjustment, giving the operator a false sense of security about the effectiveness of the brakes, which are likely to go out of adjustment again soon,” the NTSB said.
This practice also can cause abnormal wear to the internal adjusting mechanism, which can lead to brake failure, the board said.
The board also advocated that drivers of air braked commercial vehicles weighing less than 26,000 pounds undergo training and testing to demonstrate proficiency with such vehicles.
The board’s recommendations stem from a Feb. 7 report on a 2003 accident in Glen Rock, Pa,. involving a 1995 Ford dump truck on a steep two-lane residential street.
The driver for Blossom Valley Farms was unable to stop at an intersection where four passenger cars were stopped. The truck pushed one vehicle into the intersection, and the car in turn hit three children on a sidewalk. One vehicle driver and an 11-year-old passenger were killed.
The board said the accident’s cause was the lack of oversight by Blossom, which resulted in an untrained driver improperly operating an overloaded, air-braked vehicle with inadequately maintained brakes.
The 21-year-old driver had worked for Blossom less than two weeks. He had never driven an air-braked vehicle before joining the company and had received no training on how to drive one, the board said. Also, the rear truck brakes were out of adjustment, the board said.
Moreover, mechanics misdiagnosed the truck’s brake problems, the board said. Having readily available and accurate information about automatic slack adjusters and stronger warnings against manual adjustment would have helped, the board said.
The accident was similar to a California truck accident the same year in which mechanics did not look for underlying problems with the slack adjusters or other brake components, the NTSB noted.
The board also recommended:
# Every state and the District of Columbia should incorporate the information on automatic slack adjusters from the new American Association of Motor Vehicle Administrators model Commercial Driver License Manual into their CDL manuals, which should include an additional statement on the dangers of manual adjustment.
# Manufacturers of vehicles with air brakes and of automatic slack adjusters should include a warning.
# Warnings should be included by the National Institute for Automotive Service Excellence (in its T4 brake certification testing materials) and the National Institute for Automotive Service Excellence (in its certification test study guides).
:D:D
- By IronWolf2