Olds 307 Belt Diagram (2024)

FAQs

Where are belt routing diagrams located? ›

Where can I find a belt routing diagram for my engine? A: Commonly a belt routing diagram sticker is on the underside of the hood or in the engine compartment.

Standard specifications indicated on V-belts

Featured on classic V-belts are markings, i.e. profile and number, which stands for the inner length, given in inches. This is followed by a number representing millimetres, Li, which stands for the inner length.

EXAMPLE: 6PK1003 » 6 - This indicates the number of ribs on the belt; therefore, this is a 6-rib belt. » PK – The “P” indicates a metric designation, and the “K” indicates the belt is automotive per SAE J1459. » 1003 - This is the effective length of the belt expressed in millimeters.

In a piston engine, either a timing belt (also called a cambelt) or timing chain or set of timing gears is a perishable component used to synchronize the rotation of the crankshaft and the camshaft.

Some vehicles have the serpentine belt diagram located on a decal somewhere in the engine compartment. But if your car does not have a decal, you can easily look up the diagram in a repair manual or repair database. Another option is to take a photo of the old belt before removal.

Most vehicles nowadays usually have a belt routing sticker located somewhere in the engine compartment, making it even easier.

Step 1: Outside the surface of your belt, you will find the prefix e.g. B, 3L.. etc. This is also known as the belt profile. Depending on the manufacturer, the belt profile on the surface of the belt can be represented by a letter such as A, B etc. or an alphanumeric value, such as 3L, 4L etc.

How do you know what size v-belt to get? To get the proper replacement of a v-belt, measure the used v-belt's top width, height, and outer circumference. For example, a 3L400 v-belt has a 9.5 mm top width, 5.6 mm height, and a 40 inch (1016 mm) outer circumference.

You'll often see belt sizes marked in inches or centimeters. These measurements represent the distance from the edge of the buckle to the middle hole, excluding the buckle itself. So, for instance, if you see a belt labeled as size 34, it means that distance is 34 inches or centimeters.

First digit in Gates number corresponds to first two digits of industry standard number. Belt length is to the nearest tenth of an inch. Example: 2450 = 4L450 Belt has 1/2" top width and 45.0" O.C.

What is serpentine belt terminology? ›

A serpentine belt (or drive belt) is a single, continuous belt used to drive multiple peripheral devices in an automotive engine, such as an alternator, power steering pump, water pump, air conditioning compressor, air pump, etc.

There are three common V belt types: Classical V-belt (classified by their dimensions from A to E), Narrow V series (ranked by their sizes 3V, 5V, and 8V), and light-duty Fractional Horsepower belt (classified by their dimensions 2L, 3L, 4L, 5L). The letter X classifies their counterpart cogged belt.

As we mentioned early, a serpentine belt delivers power to your alternator, power steering pump, and air conditioning compressor. In some cases, it also supplies power to your water pump. It's a long, winding rubber band of sorts that is attached to your crank pulley.

Timing belts are designed with teeth and require the installation of a matched tooth-driven sprocket. They are commonly used in industrial applications because they operate at up to 98% efficiency. While V-belts also offer high efficiency, their effectiveness is drastically reduced in a short period due to slippage.

The drive belt, also known as the fan belt, provides power to many important components located near the front of the engine. The drive belt powers the alternator, water pump, power steering pump, and AC compressor. Each of these components contains a pulley where the drive belt wraps around.

belt drive, in machinery, a pair of pulleys attached to usually parallel shafts and connected by an encircling flexible belt (band) that can serve to transmit and modify rotary motion from one shaft to the other.

Timing chains are housed inside the engine and are lubricated by the engine oil, while cam belts are usually located outside the engine. But some manufacturers are now using “wet belts”, which like cam chains, run internally in the engine oil.

On a waistband, there are usually 5 belt loops – 2 at the front sides, two at the back sides and one at the center back.