of torque. Think about the smartphone in your pocket.

“If you take the combination of the aero improvements from the ProStar to LT Series, and then the engine improvements from the previous generation ProStar N13 to the new A26, you can achieve up to 9% fuel economy,” Denny explains as the A26 growls, RPMs revving quickly up to cruising speed. He takes a break from working on financial reports to talk about the future of the industry: What the unveiling of electric trucks means and the role of integrated proprietary powertrains in today’s market.



20V255000, affects 1,814 model year 2019-2020 RH Series and 2,685 model year 2018-2020 LT Series equipped with A26 engines. From a quality standpoint, that means fewer joints and fewer hoses. Even as he sits in the passenger seat of an International LT Series truck, outfitted with International’s new A26 12.4-liter engine, the mind of Navistar Inc.’s group vice president of global engineering races with insight and his gesturing hands punctuate his every point. In the faulty connecting rods, the bushing material in the small end bore of the connecting rod can develop cracks or lose chunks of bushing material over time, leading to connecting rod engine failure, Navistar told the NHTSA. Required fields are marked *. Our primary path forward would be to install a new ECM calibration on the engine,” Reiter said. The functionality and reliability comparisons are so far apart it’s almost unfair to look backward. Stay up to date by signing up for Fleet Equipment newsletters. Those fleets want that front axle weight to be as light as they can get it.”. Please wait while you are being authenticated... Jason Cannon is the Editor of Commercial Carrier Journal. A lot of the vocational trucks, depending on what they’re used for, gross out on weight. “This is an isolated incident. Navistar decided the best remedy would be a red dashboard warning light programmed into the engine control module (ECM) or by adding a sensor.

After some good-natured banter over engine technologies that Denny’s team would like to implement but know that the ROI math for the customer doesn’t jive just yet—moving them to the back burner until they’re ready for prime time—the team disbands, heading off in different directions toward different teams to execute their plan. Tim Shick, vice-president of sales support with Navistar, said most of the problems could be traced to the MaxxForce engine’s turbo air control valve, which connects directly to the engine’s electronic control module (ECM). After following a rigorous investigative process, the decision to conduct a safety recall was unanimous. The failure notice, which was officially posted by NHTSA Thursday and assigned campaign No. Denny doesn’t linger too long before making his way over to the Powerwall—a 47-ft. wide by 15-ft. tall screen that puts an IMAX to shame.
Today, Denny has pulled together Gosbee and his chief engineer, Shane Spencer, for a near final, pre-prototype overview of International’s next engine iteration—the follow-up to the A26—and engine design plans for models well beyond 2021. About five failures a week are being reported, Reiter said. The NHTSA recall number is 20V-255. Navistar’s proposed remedy is two-fold given that 87% of affected units are unlikely to suffer connecting rod failure. Denny knows that the trucks of tomorrow starts with strategies created today, and today there’s work to be done. “The base engine itself is part of what makes it so quiet,” Denny says. Alan Adler is a Detroit-based award-winning journalist who worked for The Associated Press, the Detroit Free Press and most recently as Detroit Bureau Chief for Trucks.com.

No related crashes or injuries are known, Navistar Vice President of Service Mark Reiter told FreightWaves. Your email address will not be published. An estimated 13%, or about 640 trucks in the recall population, is likely to experience the issue. “We [looked at] previous recalls where the remedy was to provide advance notification of a failure,” Reiter said. lighter than the engine it replaces, and also enables 200 lbs. The suspect parts, made by Camtac Manufacturing, a Linamar Corp. subsidiary in Guelph, Ontario, connect the piston to the crankshaft.

Changing the vendor really solved this problem.”. “We’re still working out the details,” he says, “but it’s about collaboration, working together and not being tied to an office.”. of torque. The connecting rod issue is what safety investigators call “infant mortality,” meaning it presents itself early in a vehicle’s life. Click here to sign up for our newsletter to have the latest delivered straight to your inbox. “The Workstar was very successful, and the HV Series moves the needle forward in terms of driver acceptance,” Denny says. Watch: Can you stop bulk engine oil from expiring? In the years since, nearly 23,500 A26 engines have been built in Huntsville, Alabama. “That was a big deal from a driver fatigue standpoint.”. of additional weight reduction in vehicle-mounted components. Denny pauses just for a moment to let the engine’s quietness take center stage. Customers are eligible for up to eight … The MAN D26 had a twin turbo, but we’ve gone with a VGT. Make truck tire replacement and repairs match your schedule, Volvo Trucks awarded $21.7M to deploy 70 Class 8 VNR electric trucks, Used truck market strong throughout 2020, Fleet Advantage reports, Vipar Heavy Duty kicking off Impact Conference virtually, Ford details new options for 2021 Transit, Reyco Granning 79KB suspension available on Kenworth EVs, Fluid Truck orders 600 Lightning electric vehicles, Transervice Logistics partners with Day & Ross, Slaying truck service challenges with the right software, How the 3G sunset could impact your trucks' ELDs, Predictive truck maintenance: The long road from concept to reality, NACFE Updates Low Rolling Resistance Tires Confidence Reports, Shell launches E-Fluids for electrified commercial vehicles, LSI Chemical introduces TotalArmorW7 diesel fuel additive.
Some drivers said the engine began to knock. The wrist pin bore of the connecting rod on affected engines was machined outside the design tolerance for straightness. Did you know that we have fresh truck stories and equipment insight served up on our website every day? Denny has eschewed a traditional office and has set up shop in a cubicle surrounded by International employees of all responsibility levels. “We were really concerned about what the driver would experience when the connecting rod failed in an engine,” Reiter said. Do NOT follow this link or you will be banned from the site. The recall is expected to begin July 8. But the engine isn’t a simple rebranding—both the Navistar and Volkswagen teams worked hand in hand to craft an engine that meets North … Reiter said in an effort to learn more about the defective part prior to engine failure, the company worked with its customers via the International Truck dealer network to determine what symptoms drivers were experiencing as breakdowns occurred. “This is not a wearout mode.”. Serving the global freight industry with the fastest and most comprehensive news insights and market data on the planet. In terms of a component that’s leading to a high failure rate, this is the one. “We’re in the process of finalizing the development and validation of a solution. The investigation was prompted in September 2019 by a carrier who suffered five A26 engine failures over a two month period. Reiter said once a truck has been diagnosed with a connecting rod failure, Navistar will replace the engine with a new one equipped with a connecting rod from Navistar’s current supplier – a process Reiter expects to take five days or less. At 2,299 lbs., the A26 is 55 lbs. He reviews slides featuring life-size images of International’s LT Series to prep for upcoming customer meetings, shakes his team members’ hands and then Denny is on the move again. Navistar recently filed notice with the National Highway Traffic Safety Administration (NHTSA) concerning a defective or noncompliant component on its A26 engine, which could result in complete engine failure in nearly 4,500 affected trucks in the United States. Letters will be sent to affected carriers within 60 days but Reiter said the company is already talking with customers. The company considered how to address the problem short of replacing the engines in 4,499 trucks in the United States and 410 trucks in Canada. An engine knocking noise, rough idle or an engine warning light can alert a driver to an imminent engine shutdown. Watch: Do medium-duty trucks need winter tires? Navistar is still developing the warning light fix. While fleets may bristle at an increase in engine technology after being burned by earlier engine models across the industry trying to meet stringent Greenhouse Gas emission standards, Denny details how technology is actually improving engine reliability. “But as engine and aftertreatment technology evolves, it becomes more reliable.”. The solution of flashing the engine would provide drivers with a notification allowing them to seek a safe location before the engine could fail.”. Determining the beginning of a defect is easy because of multiple failures.


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