What size alternator belt do I need?
Measure the length of string it took to wrap around the path of the serpentine belt. Purchase a belt one size smaller than the size you measured. The actual belt will have tension on it, whereas the string doesn’t. For example, if you measured 80 inches, purchase a belt that is 79 1/2 inches.
How do you read a drive belt number?
Automotive belts start with either 4L (12.5mm wide) or 3L (9.5mm). The number following it is the outside length of the belt in tenths of inches. The inside length of the belt is typically 2″ less for a 4L belt, and 1-1/2″ less for a 3L belt. An example would be 4L460, which would be 46″ long outside, 44″ inside.
How do you tighten the belt on an alternator?
Tighten the alternator bolts. With the serpentine or alternator belt safely seated on the alternator pulley, use the same wrench you used to loosen to the bolts to tighten them again. As you tighten the bolts, the alternator will stop tipping forward, which will increase the tension on the belt.
Which is the best belt for alternator and fan?
So cars went from one belt driving the fan, water pump, and alternator, to 2 or 3 separate belts, now also driving the power steering pump, A/C compressor, and emissions air pump. The “V” belt is one of the most effective belt solutions because of its strength, relative quietness, power transfer, and durability.
Can a serpentine belt be used for an alternator?
If your vehicle has an alternator belt instead of a serpentine belt, this is the method you will need to use. Be careful not to damage the wiring going into the alternator. The alternator provides the power the engine needs to run through those wires. Slide the belt off of the pulleys and remove it from the car.
Can a car have more than one alternator belt?
In older model vehicles, engines often came equipped with multiple belts that each powered a different accessory. However, most modern vehicles use only one belt to power the alternator as well as the power steering, air conditioning, and any other accessories.