GM 12639468 Belt,Generator & A/C Compressor

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There is only one serpentine drivebelt placed in front of the engine and it is very important for the working of the engine and its elements, because of its function and because it is made of a material that wears out, that is why it needs to be checked regularly. This belt operates the alternator and the air conditioning compressor while it may not be required to be replaced for up to a hundred thousand miles, inspections must be done according to manufacturers' recommendations. The drivebelt has to be examined for cracks and the separation of the belt plies with the engine switched off and the engine turned to move the belt off the pulleys for better examination. Rotate the belt to reveal its other side so as to assess the state of fraying and glazing; in addition, the pulleys ought to be examined for signs of nicks, cracks, distortion as well as corrosion. Tiny cracks through the edges of the belt ribs are usual among ribbed belts and repairs are not required in this case provided that the cracks are not too large or deep. For four cylinder models, remove the right front wheel lug nuts, lift the car, place it on jackstands, remove the right front wheel and the lower splash shield. To V6 engines, few processors include the removal of the air filter housing, and the engine mount strut. There is a tensioner hole where you can use a 3/8-inch drive ratchet or breakout bar to free the drivebelt tension and must take note of the belt path before disconnecting it from the pulleys. Insert the new drivebelt through the crankshaft, alternator, power steering pump and air conditioning compressor pulleys, where needed, and then release the tensioner to make certain that the belt is correctly situated in all the pulley grooves. For tensioner replacement, the drivebelt is to be removed, the idler pulley loosened on 3.6L V6 models, and the bolt(s) holding the tensioner on the engine. Removal is reversed in order with tensioner bolt(s) and the idler pulley tightened to the correct torque.