What is an engine balance shaft?

What is the purpose of a balance shaft in an engine?

[149 Pages Report] A balance shaft is designed to rotate and vibrate in a way that reduces the vibration produced by an engine. Balance shafts are commonly used for engine refinement. Four cylinder engines use a tow shaft, which turns in opposite directions on either side of engine’s crankshaft.

Do all engines have balance shafts?

In a straight-six engine and flat-six engine, the rocking forces are naturally balanced out, therefore balance shafts are not required. V6 engines are inherently unbalanced, regardless of the V-angle. Any inline engine with an odd number of cylinders has a primary imbalance, which causes an end-to-end rocking motion.

How much does a balance shaft cost?

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The average cost for balance shaft drive belt replacement is between $357 and $434. Labor costs are estimated between $294 and $371 while parts are priced at $63. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.

How many shafts does an engine have?

A transmission has three specific shafts: the input shaft, counter shaft, and main shaft. The so-called clutch gear is an integral part of the transmission’s input shaft and always rotates with input shaft. The input shaft itself is connected to the engine and takes power in a 1 on 1 proportion.

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What is a balance shaft Mercedes?

A balance shaft gear is a part of a vehicle’s engine that is designed to help balance out the components of the engine and eliminate vibrations at higher speeds. … Balance shaft gear problems are most typical among V6 piston engines, primarily the Mercedes M272 in models manufactured between the years 2004–2008.

Do all 4 cylinder engines have balance shafts?

Overview. Balance shafts are most common in inline four cylinder engines which, due to the asymmetry of their design, have an inherent second order vibration (vibrating at twice the engine RPM) which cannot be eliminated no matter how well the internal components are balanced.

How do you tell if a 4.3 has a balance shaft?

You can tell from the front timing cover, if it’s rounded then it’s non balance shaft, if it comes to a flat V shaped top it’s a balance shaft.

What happens if balance shaft belt breaks?

If the belt fails on one, it creates excess vibration in the engine, which can cause the bearings to fail in the other balance shaft, effectively damaging the oil pump and potentially leading to catastrophic engine failure.

What is a balance belt?

The Balance Shaft Belt, most common in four-cylinder engines, moves the balance shaft, the mechanism that helps reduce vibration in the motor. The belt typically attaches to both the balance shaft and the crank shaft. Like any kind of belt, the balance shaft belt can wear out and need replacement.

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