Of course, that isn’t always how things play out in the real-world (we’ll get to that in due time). In fact, in many cases timing failures aren’t the result of a problem with the chain itself, but rather the hydraulic camshaft actuating gears. Furthermore, this also makes the timing chains in these engines even less prone to wear-and-tear. The teeth offer a more aggressive fit with sprockets that turn the camshaft and crankshaft, reducing the chance of the chain coming loose.
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The M271 CGI engine goes even further – instead of having interconnected links, timing chains in these engines use a series of prominent “teeth”, connected by strong side links. It doesn’t have a date or time at which it needs to be replaced, nor is it part of any service schedule, because it’s assumed that it won’t ever need to be replaced under normal conditions. Instead, they assume that the chain will last the lifetime of the car, and exclude it from routine services altogether. It’s because of the aforementioned durability that most official Mercedes-Benz maintenance schedules don’t even mention timing chains. In fact, timing chain replacement isn’t even included on most Mercedes-Benz service schedules! Less frequent replacement Timing belts will slowly degrade necessitating periodic replacement – by contrast a timing chain can theoretically go the entire life of your car without replacement. It will stand up to these pressures without wearing down like a rubber belt might.īy contrast, rubber belts can warp, or become brittle with the prolonged friction and heat. This can generate a lot of friction and puts the timing chain or belt under considerable pressure.Ī metal timing chain is inherently more durable and more resistant to the heat and friction generated by your engine, especially the powerful ones found in Mercedes-Benz vehicles. The belt or chain will interact with various tensioners, pulleys as well as the hydraulic gears in both the cam and crankshaft. Timing chains and belts perform hundreds of circuits, even during a short drive. In our opinion, the reason Mercedes-Benz vehicles utilise timing chains is simple: they are considerably more durable than timing belts, and therefore better suited for the more powerful engines typical of Mercedes-Benz vehicles. So if they’re so similar, why does Mercedes-Benz continue to use timing chains when most other car brands have moved on to rubber timing belts? Strength and durability In terms of function, there’s no difference – both serve the same purpose of synchronising the camshaft and crankshaft in your engine, preventing engine valve failure. While not all vehicles use timing chains, most Mercedes-Benz vehicles (especially those powered by higher-displacement engines such as the C-Class) do. Timing belt v timing chain: why Mercedes-Benz uses timing chains Today, we explain the most common causes of timing chain failure in your Mercedes-Benz, how it can be fixed, and most importantly, how calling Ammstar for Mercedes service in Melbourne can prevent it from happening in the first place.
Just like any other part in your engine, timing chains may fail and require a Mercedes-Benz service. While a timing chain may be stronger and more suited to powerful vehicles (such as the ones Mercedes-Benz offers), they aren’t indestructible. Additionally, timing systems that use chains can go much longer without replacement. The timing chain is a strong chain that loops around the gear wheel in the camshaft and crankshaft to maintain the synchronicity of the valves and pistons respectively.Įngines designed with timing chains instead of the more common timing belt generally enjoy greater durability and strength.
If engine timing is off, you may experience a loss of power, reduced fuel efficiency and even complete engine failure.Ĭentral to maintaining this specific timing in your engine, is a timing chain or belt.
The engine’s timing is vital, responsible for syncing different parts of your engine and regulating the combustion cycle. As any car lover knows, the key to this is engine timing. The engine in your Mercedes-Benz works with precision to produce smooth and efficient operation.
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