NTSB ruled an ASA adjustment had led to a runaway truck accident in Pennsylvania in 2003 that claimed the life of the driver and an 11-year-old child riding in a car that the dump truck had struck during its descent on a steep downgrade.
Slack adjuster manual#
The push to end manual adjustments on ASAs is nothing new.įollowing their mandated use on tractor-trailers in 1994 and trailers in 1995, the NTSB issued a scathing report in early 2006 condemning the practice of regularly adjusting ASAs.
Accident investigations by the National Transportation Safety Board (NTSB) have shown worn and improperly adjusted ASA’s to be a contributing causal factor in some accidents.” “Overriding the automatic adjustment method can cause premature wear on the internal components and eventually result in an early end-of-life condition. “Despite being standard in the industry for almost two decades, there are still veteran technicians who will regularly put a wrench on an ASA to manually adjust it,” Accuride states in an August safety and performance report for Gunite ASAs. With out-of-service brake violations continuing to top the annual Commercial Vehicle Safety Alliance (CVSA) International Roadcheck, manually adjusting a slack adjuster can not only lead to more brake problems down the road, it can also lead to accidents. “The reasons behind adjusting an ASA outside of a brake reline should be investigated such as alignments, bushing wear, wheel conditions, etc.,” Christiansen says. “If a fleet is manually adjusting a slack adjuster regularly it can harm the longevity of the unit,” says Chris Christiansen, warranty/technical services coordinator, Accuride Corporation. Still, despite years of warnings, automatic slack adjusters (ASA) continue to be manually adjusted by technicians who may not know any better or who may be eager to get a truck out of the shop and back out on the road. Our goal is to be a worldwide trailer components consolidated supplier.They’re called automatic slack adjusters for a reason, and the manufacturers that make them want to keep it that way. On the basis of the quality standard ISO9001, Roadage also consummated the TUV of Germany: TS16949 in February, 2006. Besides, Roadage attaches much emphasis to the quality of products as well as the management. Now, we have over 300 employees, among whom over 40 are senior and junior expert technicians. Our products have been enjoying a good reputation in the circle of heavy-duty components both at home and abroad. As the worldwide largest manufacturer of slack adjusters, Roadage has an annual output of 1000000 sets of trailer components, among which 80% are exported and 20% are supplied for OEM manufacturers in China. The high-quality products of Roadage mainly include: Manual & automatic slack adjusters for European, American, Japanese and South Korean market Brake s-camshafts and repair kits Spring brake chambers Brake shoe assemblies and repair kits Air brake valves Quick release valve assemblies Quick couplings assemblies etc, nearly one thousand sorts and more than a dozen of series. Has a history of over 15 years in professionally manufacturing and developing trailer parts for the axles, air brake systems of trailers, heavy-duty trucks and carriages for European, American, Japanese and South Korean market.
Slack adjuster series#
Roadage is the biggest manufacturer with most series and high quality passing TUV (TS16949).įounded in 1993 and located in Yuhuan county of Zhejiang province in China, Zhejiang Roadage Machinery Co., Ltd. The total quantity is about 1.2 million of manul slacks and 150, 000 of auto slack adjuster. THE ONLY Chinese MANUFACTURER ENTERING Germany WITH SLACKS! WORLDWIDE TRAILER COMPONENTS CONSOLIDATED SUPPLIER
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