Torque converters allow an engine to operate within its most efficient speed range by minimizing engine lugging and stalling. That way, the engine is able to produce the rated horsepower irrespective of load demands. Converters increase the level of accuracy in control by minimizing or eliminating clutching and declutching or shifting. Converters also eliminate mechanical connection by ensuring the transmission of torque entirely through the moving fluid mass.

What Is a Torque Converter and How Does It Work?

As hydrodynamic fluid couplings, torque converters are used in the transference of rotating power from an electric motor, combustion engine or any other prime mover to the rotating driven loads. The ability to multiply torque in the presence of a considerable difference between input and output rational speeds is the key characteristic of a torque converter. To avoid a loss of efficiency and also prevent spillage when input and output rational speeds are nearly equal, torque converters are equipped with a temporary locking mechanism — a rigid binding of the engine to the transmission — that kicks in when that happens. Torque converters are used to increase efficiency and production speed in many applications.

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Common Torque Converter Problems

Torque converters horsepower and torque to keep your projects on the move. But they are not perfect. Sometimes they break down. Here are some of the common problems your Allison torque converter is likely to encounter in its lifetime:

Improper Installation

To make sure the converter works accordingly, you have to ensure that it’s properly installed. Have the cooler/radiator cleaned by a professional. Have some new cooler lines installed too; it’s one of best practices in converter installation. Proper cleaning ensures that all the contamination that might have been left by the previous has been removed. Failing to clean coolers and lines will result in quick but costly failure resulting from the ingestion of particles from the previous installation.

Deformed Blades

Another sure-fire way to see an industrial converter lose its effectiveness is to let its turbines become deformed or fragmented in any way. These blades begin to pull away from the hub or breakaway once contamination has been ingested from the system or rapid overheating. The blade can even break into pieces in the case of extreme overheating. To prevent prohibit losses coming from inefficiency and costly repairs, keep your torque converter’s blades in good shape.


Temperatures need to be kept under control at all times. A little overheating can lead to a big problem in when it comes to a torque converter, it results in some of the problems described above. In most cases, overheating leads to gaskets, o rings, and seal damage leading to improper fluid circulation and fluid leaks.

When buying a torque converter, make sure it’s one of the best brands to avoid some of these problems. If your torque converter sustains any of the above issues, get it repaired as soon as possible. Search locally for a company that provides the best repair services in the area and contract them.