Cummins Inc., a supplier of diesel engines and generators to the RV industry, warned Wall Street today (Dec. 19) that it will report a fourth quarter loss and that it has closed a “mid-range engine plant in Walesboro, Ind.,” until the end of this year.

The Walesboro plant, which was shut down beginning Dec. 13, does not build engines used by Freightliner Custom Chassis Corp. for its diesel pusher motorhome chassis, said Dean Schaper, chassis product manager.

DaimlerChrysler’s decision to reduce production of the Dodge Ram pickup was cited as one of the reasons for Cummins’ decision to temporarily close the Walesboro plant.

Otherwise, the extremely slow North American heavy-duty truck market was cited as the primary reason why Cummins anticipates reporting a loss of $14.5 million to $18.7 million during the October-through-December period.