2009 FOREST RIVER BERKSHIRE Engine Problems

(REPORT PREVIOUSLY SUBMITTED 18 APRIL BUT MAY HAVE INADVERTENTLY BEEN DELETED). AT ABOUT 31,600 MILES ON MY RV (2009 FOREST RIVER BERKSHIRE MOUNTED ON A FREIGHTLINER CHASSIS WITH CUMMINS 350HP ENGINE), THE ENGINE SUDDENLY OVERHEATED. DURING REPAIR AT A FREIGHTLINER FACILITY, THREE OF FOUR RETAINING BOLTS WERE DISCOVERED BROKEN ON THE FAN HUB MOUNTED ON THE BACK OF THE ENGINE; THE FOURTH HAD BACKED OUT SEVERAL THREADS AND THE FAN TILTED INTO THE SHROUD AND SEIZED IN PLACE. FREIGHTLINER REPAIR TECHNICIAN STATED THEIR FACILITY HAD MADE SEVERAL REPAIRS ON CUMMINS/FREIGHTLINER CHASSIS RVS; THE FAILURE OCCURS WITH SOME FREQUENCY; THE BOLTS AND DESIGN OF FAN HUB APPEAR TO BE INADEQUATE FOR LOADS APPLIED BY THE SERPENTINE ACCESSORY BELT; AND THAT FAILURE OF ALL FOUR BOLTS COULD SHATTER THE FAN BLADES WHEN IT SEIZES IN THE SHROUD RESULTING IN SHRAPNEL DAMAGE TO THE RADIATOR AND SEVERED ELECTRICAL AND FLUID LINES. FURTHER CONSEQUENCES...