GM 12576572 Belt,Fan & Water Pump & A/C Compressor & Generator & P/S Pump

The single serpentine drivebelt which is automatically tensioned, drives all the accessories beginning with the models manufactured in 1987 and up to date. A special marking on the tensioner fits into a groove; if the pointer shifts to the left of the index line, it is necessary to replace the belt. Drivebelts, often referred to as V-belts are situated at the front part of the engine, and they operate such accessories as; an alternator, power steering pump and water pump as well as an air conditioning compressor. The number of belts can differ according to the installed accessories and the flaw of the belt must be identified on time to avoid damage to the engine. To examine belts, the engine should be turned off, and one should look at cracks, separation, fraying, glazing and should grasp each side of a belt and twist it. In the case of models 1985 and 1986 tension is determined by applying pressure between the belt and two pulleys with exact and calculated values of deflection according to the distance between the pulleys. They are made by shifting the belt-driven accessory on its bracket and this involves loosening of the adjusting and pivot bolts. After making the adjustment, the accessory should be butt and locked in position before checking the tension before tightening the bolts. To replace the belt on such models, use the adjustment process to retract the old belt, as professionals advise that it is best to replace all belts at once, and put a mark on each one so that the correct arrangement can be made. While buying new belts, the old ones should be taken along to be used as a standard. It is required to lift the air cleaner and intake duct to get access to the drivebelt on 1987 and later models; it is a serpentine drivebelt is held by a spring loaded tensioner. Loosen it with a breaker bar or ratchet, and slowly withdraw it off the pulleys. To replace the new drivebelt it should be placed in accordance to its routing schematic and ensure that it is seated in the grooves of the pulley to avoid wear and tear.