Seasonal influenza, commonly called âthe flu,â is caused by influenza viruses, which infect the respiratory tract (i.e., the nose, throat, lungs). Unlike many other viral respiratory infections, such as the common cold, the flu can cause severe illness and life-threatening complications in many people.hildren may pass the virus for longer than 7 days. Symptoms start 1 to 4 days after the virus enters the body. Information about how long a person is contagious is available at How Flu Spreads.
The serpentine belt and v-belt are also known as drive belts.. Because of the high amount of heat in the engine, the belt can develop cracks over time and eventually break. If the belt breaks, the steering wheel will be difficult to turn and driving will be hazardous. In some cars, water pumps are driven by the drive belts. If the belt breaks, water and coolant needed to keep the engine cool will not properly flow to the engine. The engine will overheat, potentially causing severe damage.
On a vehicle with a serpentine belt system there is always a tensioner pulley. Usually in the center of the routing network, you need to place the correct size wrench on it a â¦ nd push or pull with one hand releasing the tension on the belt. With the tension released, use the other hand and slip the belt out. Belt tension of each belt is checked by pushing on the belt at a distance halfway between the pulleys (push firmly with your thumb and see how much the belt deflects) A rule of thumb is that if the distance from pulley centre is between 7 and 11 inches the belt should deflect 1/4 inch, 12 to 16 inches 1/2 inch.