What is the function of an interaxle differential lock?

What is the function of an interaxle differential lock?

• A. It allows speed differences between the rear driving axles, delivering full torque to each axle.
• B. It locks all wheels to force equal speed.
• C. It disengages when wheel slip is detected.
• D. It reduces torque to all wheels.

Answer: (A)

Tying the two rear driving axles together with an interaxle differential lock makes them share power and rotate in unison. When the lock is engaged, the axles are forced to turn at the same speed, which helps prevent one axle from taking all the torque while the other loafs or lifts off. The practical effect is that torque is made available to both axles, improving traction, especially on slippery or uneven surfaces. The other statements aren’t describing this function: locking all wheels to force equal speed describes a universal wheel lock rather than an interaxle setup; disengaging when slip is detected describes traction control behavior, not the basic locking action; reducing torque to all wheels isn’t what this device does.

Tying the two rear driving axles together with an interaxle differential lock makes them share power and rotate in unison. When the lock is engaged, the axles are forced to turn at the same speed, which helps prevent one axle from taking all the torque while the other loafs or lifts off. The practical effect is that torque is made available to both axles, improving traction, especially on slippery or uneven surfaces.

The other statements aren’t describing this function: locking all wheels to force equal speed describes a universal wheel lock rather than an interaxle setup; disengaging when slip is detected describes traction control behavior, not the basic locking action; reducing torque to all wheels isn’t what this device does.