What is the primary function of the transfer case in a four-wheel-drive system?

What is the primary function of the transfer case in a four-wheel-drive system?

• A. Redirect power to the front axle
• B. Power accessories through neutral
• C. Reduce noise in the drivetrain
• D. Re-route power to the rear axle

Answer: (A)

The main idea is moving engine torque to where it can actually drive the wheels. The transfer case sits after the transmission and the job is to send that torque to the wheels via the drive shafts. Its core purpose is to redirect power to the front axle so the front wheels turn when four-wheel drive is engaged. In many systems, it can also modulate how much torque goes to the rear or provide low-range gearing, but at its essence it’s the mechanism that delivers power to the front axle to enable four-wheel drive.

The main idea is moving engine torque to where it can actually drive the wheels. The transfer case sits after the transmission and the job is to send that torque to the wheels via the drive shafts. Its core purpose is to redirect power to the front axle so the front wheels turn when four-wheel drive is engaged. In many systems, it can also modulate how much torque goes to the rear or provide low-range gearing, but at its essence it’s the mechanism that delivers power to the front axle to enable four-wheel drive.