Paccar Inc.’s Kenworth and Peterbilt divisions received a third of the faulty Eaton Corp. clutch components that affected automated transmissions across the trucking industry.
All major truck makers, including Daimler Trucks North America, Volvo Trucks, Navistar International Corp. and engine maker Cummins Inc., were included in the Eaton Corp. recall of 76,512 faulty clutch parts in December 2018.
The clutches may not fully release, leading to unintended vehicle movement and increasing the risk of a crash.
Drivers of affected vehicles would experience powertrain vibration, noises and a possible rocking of the cab. An audible warning could sound or a visual display illuminate on the instrument panel alternating between auto neutral and the engaged gear.
Kenworth and Peterbilt said 1 percent of their 2018-2019 trucks recalled were expected to have the issue. Kenworth recalled some C500, T270, T370, T440, T660, T680, T800, T8809 and W900 models. Peterbilt recalled some 337, 348, 365, 367, 389, 567, 579 and 587 models.
No clutch failure, crashes or injuries were mentioned on the National Highway Traffic Safety Administration website, which posted Paccar’s Dec. 21, 2018, filing covering 25,343 trucks.
The last affected Paccar model would have been built on June 30, 2018. Eaton reprogrammed the affected software in the clutch assembly as of June 5, 2018.
Eaton said it began its investigation of the defective clutch parts, caused by a failure to meet manufacturing standards, in late September. Eaton is performing software updates and repairing physical parts as needed or refunding the purchase price.
The NHTSA recall number for Paccar is 18V-931.