AFTER OPERATING VEHICLE UNDER HEAVY LOAD (SNOWPLOWING), THE HYDRAULIC CLUTCH LINE RUPTURED WHEN THE CLUTCH WAS DEPRESSED AND THE HYDRAULIC FLUID IGNITED ON THE HOT EXHAUST SYSTEM. NOTE: THERE WAS A RECALL (NHTSA CAMPAIGN ID NUMBER : 99V115000 ) ISSUED FOR THE EXACT SAME PROBLEM WITH THIS MAKE/MODEL/YEAR TRUCK WITH A V10 ENGINE VERSES THE V8. THE HEAT FROM THE NEARBY EXHAUST PIPE EXCEEDED THE TEMPERATURE RATING OF THE HYDRAULIC CLUTCH LINE MATERIAL CAUSING IT TO RUPTURE. *TR