Drivebelts, or V-belts, at the engine front, are essential for vehicle function and require regular inspection and adjustment. The number of belts depends on installed accessories like the alternator, power steering pump, water pump, and air conditioning compressor. Some engines use a serpentine belt with a tensioner, requiring no adjustment. To inspect, and check belts for cracks, separation, contamination, and glazing. Adjust belt tension by moving the belt-driven accessory on the bracket after loosening the locking bolt and pivot bolt. When adjusting the alternator drivebelt, loosen the pivot nut, locking bolt, or T-bolt locknut, and turn the adjusting bolt.