How does a serpentine belt power an alternator?
As this picture illustrates, a single serpentine belt will typically power all externally mounted accessories. Idler pulleys help with proper routing of the belt. Unlike individual belts, tension on a serpentine belt is provided by a tensioner pulley which is under constant spring pressure.
Where are the pins located on a belt pulley?
Overpin Diameter: An engineering dimension used to represent belt effective diameter. Cylinders or “pins” are placed at the top and bottom of the pulley’s v-groove, the measurement is taken from the top of the upper pin to the bottom of the lower pin.
How do you find the pulley on a car?
Locate the pulley and power source driving the system. This is usually an electric motor or some form of internal combustion engine. Start at the drive pulley and measure it. Then measure the pulley that the drive pulley is connected to through the drive belt.
Which is the simplest type of pulley system?
A belt and pulley system is one of the simplest types of pulley systems. As I described before, it contains two pulleys, one driving the belt and one driven by a belt. Belt drives can take many different forms; in tank treads, band saws, and sewing machines.
Where does the serpentine belt go on an alternator?
If you do not have a diagram on the vehicle or in your service manual laying out the direction your serpentine belt travels through the pulleys, take a picture of it with your phone to refer to when installing the new belt. A strictly alternator belt will likely only go around an alternator pulley and the crank pulley at the bottom of the engine.
Overpin Diameter: An engineering dimension used to represent belt effective diameter. Cylinders or “pins” are placed at the top and bottom of the pulley’s v-groove, the measurement is taken from the top of the upper pin to the bottom of the lower pin.
Which is pulley transmits power through the belt?
One pulley is the “driving pulley”, and as it spins, it transmits power through the belt either via friction or teeth, thus spinning a “driven pulley”. I’ll be showing how you can use pulleys to make some pretty insteresting mechanisms later on.
What’s the best way to loosen an alternator belt?
Use a breaker bar or socket wrench to loosen the auto-tensioner. Many newer model vehicles come equipped with an auto-tensioner pulley. The pulley presses upward as the belt wraps around it so the belt remains under constant, steady tension.