WASHINGTON, Sept 1 (Reuters) - Ford Motor Co (F.N) said Wednesday it will again trim U.S. truck production due to the ongoing semiconductor chip crisis that has hit auto industry wide production. The second largest U.S. automaker said it will cut two of three shifts at its Dearborn Truck Plant next week, while its Kansas City Assembly Plant F-150 production will be down. The company"s Kentucky Truck Plant will operate on two shifts the weeks of Sept. 6 and 13 rather than three.