Owing to their function and design, belts tend to fail at some point and ought to be checked now and again. The number of belts on a given car depends on the installed accessories with drive belts being used for water pump, alternately power steering pump and air conditioning compressor and so on. If required, the viscous cooling fan and the cowl of the unit can be detached for easier access during inspection. The belt and sheave must also be inspected while the engine is off and not working, for tears, cracks, wear; uneven plies; and glazing, and twisting and turning the belt so as to look at the other side. As necessary, start the engine using a wrench or socket on the crankshaft pulley bolt for inspection of the engine. For the reproduction of the air conditioning compressor, it is relative easy to get to from under the car; it may be necessary to prop up the front and place on jackstands. Lift the engine splash shield and depending on the model pull the cover off of the tensioner pulley or take a wrench and turn the tensioner of the clockwise direction to take the belt off. once the new belt has been installed make sure that it sits in the middle of the two pulleys and fits into the grooves properly before fixing the splash shield back in place and dropping the car. Air conditioning compressor drivebelt for the water pump, alternator and power steering pump the above if installed, must be slackened and the running direction marked where the belt will be reinstalled. To enhance the accessibility, the viscous cooling fan and its shroud can be un bolted and the owner should make a picture of the drive belt path before it is removed. Turn the tensioner anti-clockwise to release the belt and if refitting the original belt, then fit it with the recommended running direction. Lose the tensioner and place the belt on the pulleys in the right manner and make sure that it is correctly centered on the pulleys.