Mack Trucks says it plans to reduce truck and engine production at two of its plants effective Aug.14 following a three-week vacation shutdown.

Most affected will be the Winnsboro, SC assembly plant which will reduce truck assembly to 72 trucks per day from the present 106 per day. The second shift at Winnsboro will be eliminated, affecting 300 workers. Mack's engine and transmission plant in Hagerstown, MD will reduce production accordingly with 60 workers scheduled for layoff. The Winnsboro plant produces Mack's CH and CL conventionals as well as its newest line-haul model, the CX "Vision."
No production changes are planned for the Macungie, PA plant which produces Mack's on/off-highway vocational truck models for dumps, mixers and refuse markets. Macungie has been a one-shift plant with production averaging about 68 trucks daily.
Mack is the last U.S. truck manufacturer to announce reduced truck asembly schedules. While some truck OEs announced early this year they would be cutting back production, Mack President and CEO Michel Gigou told in March that its order backlogs were at an all-time high and the company didn't plan major production changes before the summer vacation shutdown.
In the past, Mack has traditionally shut down for two weeks in July and August, per its contract with the UAW. This summer, plants will close a third week which translates to about 870 fewer trucks produced. The new production rate for Winnsboro will reduce weekly production by 170 units. .