Drive belts or V-belts positioned at the front of the engine are useful in the operation of the car and more to its subparts. Owing to the function as well as material of construction of these belts, they wear out with time and ought to be checked periodically for potential breakdown and Signs of wear, in an effort to prevent major failure of the engine. The number of belts depends on the accessories that are fitted to a car, and these may include the generator, A.I.A. smog pump, power steering pump, water pump, fan belt, and air conditioning compressor; a single belt may drive several accessories depending on the location of the pulleys. To inspect the belts, turn off the engine and open the hood and check for deep cracks, cuts, curting, glazing and more over else twist the belts to check on the inner side. Tension is measured by pressing of the belt halfway between the pulleys; belt from 7 to 11 inches should deflect ¾ inch while the belt from 12 to 16 inches should deflect ½ inch. If adjustment is required, the belt-driven accessory may be moved to its bracket utilising the adjustment & pivot bolts. On releasing pull the component in such a manner that either the belt will tighten or loosen and keep it in fixed position to find out the tension exerted. When the correct tension is reached on both gauges the bolts will be secured and the tension checked before final tightening. Adjustment may require the use of pry bar from where leverage is required while exercising a lot of care since this is likely to result to damage of the component or even the surface against which it is placed.