Specifically, the Ford cuts will result "in an October schedule change at the company's Indianapolis, Ind., (diesel) engine assembly plant necessitating the layoff of employees."

Ford announced on Aug. 18 that it would cut car and truck production by 21 percent through the end of the year and temporarily stop production at 10 assembly plants. International Truck and Engine Corp., Navistar's operating company, makes the Power Stroke brand 6.0-liter V-8 diesel engine for the Ford F-Series Super Duty pickup truck.

"Layoffs will also impact non-represented employees, but the final number has not yet been determined," Navistar said in a statement. The plant is coming off a previously announced 2-week shutdown and another week of shutdown is scheduled to begin Sept. 11.