It's interesting to note that as the belt snakes its way around the various pulleys, both the toothed side of the belt and the smooth side apply friction to the different pulleys depending on the level of 'load' they place on the belt. The belts are made of reinforced rubber and are usually 'toothed' on one side. The actual drive belt part can be as cheap as 28, while timing belts are around 50. Parts are relatively cheap, especially for easily replaceable drive belts. The chain doesnt need to be replaced routinely (unless you repeatably run the engine low on oil). About half of the total cost goes to labor, while timing belt labor costs can go as high as 500, with almost 90 of the total cost paid to labor.
#Serpentine belt vs timing belt series
The K series engine in both your Vs uses a timing CHAIN, not a belt. Is it time to change your drive belt? Head here What is an aux drive belt made of? The serpentine belt drives the accessories on the front of the engine. It's not uncommon for the aux belt to power the alternator, power steering pump, air-con pump and water pump.Īs the belt needs to be long you're also likely to find an idler pulley and/or a tensioner pulley in the mix. These keep the belt correctly tensioned so it doesn't deviate from its course, and so that it applies sufficient friction to the pulleys. The timing belts job is to open and close the engine valves to keep time with the up and down movements of the pistons. The aux belt is virtually always visible, unlike the timing belt which is much more likely to be hidden behind a cover. On a regular front-wheel-drive car you'll see the aux belt down the side of the engine (access may be very tight). Its wide, flat, often toothed design means that it can power several different components at once and has become the norm in engine bays where space is restricted. You likely know there are belts in your car, but you might not know the difference between two very important belts. When it comes to understanding the inner workings of your vehicle, it’s easy to get a little lost in the vocabulary. In more recent years the aux belt has become the preferred choice. Automotive > Parts & Accessories Maintenance & Repair. It's not uncommon to find more than one V-belt, depending on the application. But as engines became more complex – and fans became electrical rather than mechanical – the fan belt was superseded by the V-belt, which as the name suggests is a V-shaped belt that powers one or more additional components. On old cars the belt simply connected the crank with the fan, so as the engine rotated so did the fan. The auxiliary belt's role is to 'power' a variety of important peripheral components via a system of pulleys driven by the main crankshaft pulley. The aux drive belt is also known as the serpentine belt, and shouldn't be confused with the timing belt which serves a completely different purpose.
#Serpentine belt vs timing belt manual
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