A Simple Review Of What A Transmission Transfer Case Does

Sometimes when people take their vehicles into a repair shop, it can seem as if the mechanic or technician is speaking in a different language. It is well worth the time to find a mechanic or specialty repair shop that takes the time to explain to you just what they are talking about, especially when they are indicating you have a problem with your transmission or transmission transfer case.

The Basics

Most car or truck owners are very familiar with a transmission, they know it is the system in the vehicle that allows the gears to shift to provide the right speed and torque for the engine to power the vehicle. The transmission transfer case is found on a four-wheel drive or an all-wheel drive, and it is there to engage or disengage the 4W drive. It is considered part of the drivetrain system, and it can be either a chain or gear based mechanism.

Depending on the type of vehicle you drive and who you are talking to, you may hear the transmission transfer case referred to as the transfer gearbox or the transfer box, all mean the same thing.

What it Does

The transmission transfer case is connected to the transmission through a drive shaft. The power from the transmission is transferred along the driveshaft, through the transmission transfer case, and to the front and rear axles through yet other drive shafts.

The operator of the vehicle can engage or disengage the transmission transfer case to allow for two wheel drive or four wheel drive through a shifter located within the vehicle, typically to the front and driver’s side of the stick shift. In other vehicles, it may be engaged or disengaged with a switch, and for some vehicles, including sports cars that are all-wheel drive, it is automatically locked on.

Most off-road or light duty trucks with four-wheel drive also have a low gear range that provides maximum torque and power to the axles. This allows vehicles to tow, climb and work under load more efficiently than with the low gear available through the transmission alone.

Signs of Problems

The most common signs of problems with a transmission transfer case include:

* Unusual noises, often grinding, banging or humming noises when using low gears or engaging the 4-wheel drive

* Vehicle pops out of gear

* Difficulty in putting the vehicle in gear

* Shavings or metal in the fluid

A transmission specialist can check your transmission transfer case and determine if it needs to be repaired, replaced, or simply have the fluid drained and replaced. This is an important check as it can be a very low-cost fix and one that just takes a short amount of time.

If you are concerned about your transmission transfer case, we can help. To learn more about the repair services we offer at Trans Works Transmission LLC visit us online at www.trannyman.net. You can like them on Facebook.