All four-wheel drive vehicles come with a transfer case. The box, located just behind the transmission, takes the torque generated by the engine and distributes it to the driveshafts. This part also synchronizes the wheel rotations and can contain low range gears so you can take the vehicle off the road. There are several options used by four-wheel drive vehicles.

Drive types

There are two main options in unit types. Each has its benefits depending on the use of the vehicle. One type is the gear-driven transfer case. This system uses gear sets to drive the front and rear driveshafts. This design works well with strong and heavy units. They are usually found on larger trucks. However, they appear more frequently in passenger cars.

Chain driven designs only drive one shaft. On rare occasions, some vehicles use this design to drive both axles. These are quieter than a gear driven version. Compact trucks, Jeeps, SUVs, and full-size trucks use this type of driving. However, many serious off-road drivers change this type of design to a gear-driven model. They prefer the extra force provided by the drive and tolerate the extra noise.

Transfer case exchange rates

As with broadcast types, there are a few different shift types. One is the electronic shift on the fly (ESOF). This type of gearbox comes with a dash-mounted selector that selects between all-wheel drive and two-wheel drive. To activate the four-wheel drive high selector, you must drive at a lower speed. If you want to engage four-wheel drive at low speed, you must stop the vehicle and put the transmission in neutral.

The other type of unit is the manual shift on the fly (MSOF). The MSOF has a selector lever located on the floor drive hump. This type of derailleur sometimes has two sealed automatic front axle hubs with lock, unlock, or free selectors. As with the ESOF, to activate the high setting, your vehicle must move at a low speed. The vehicle, to shift to the low speed transmission, must be in neutral with the vehicle stopped.

accommodation

When it comes to housing, like everything else, there are a couple of different options. The first option is a house with a transfer case for married people. This means that the part is bolted directly to the transmission. With this housing, it is located between the transmission output shaft and the rear of the main transmission shaft. In some cases, the case is part of the transmission and the two share the same case.

The other type of housing is a divorced / independent model. Unlike the married version, this one is not mounted directly on the transmission. Instead, it’s located away from the transmission and connected by a driveshaft. This type of casing is found only on vehicles with a long wheelbase, such as a military or commercial vehicle.

A transfer case can be a combination of any of these types. A chain-driven model can be MSOF and contained in a married couple’s home, for example. The design of the part will depend on the manufacturer.