THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR VEHICLE WITH POOR HEAT. TECHNICIAN WILL REMOVE THE TEMPERATURE ACTUATOR AND INSPECT FOR CRACKS. IF THE SHAFT IS CRACKED IN ONE PLACE, INSTALL A #4 HOSE CLAMP OVER THE TEMPERATURE VALVE SHAFT. IF THE SHAFT IS CRACKED IN MORE THAN ONE PLACE OR A PIECE IS MISSING, THE TEMPERATURE VALVE MUST BE REPLACED.