One-way clutches lock to allow torque to be applied during acceleration, and then unlock to break the connection on deceleration, allowing the vehicle to gently coast to a stop. Technician B says brake bands and sprag- or roller-type one-way clutches are stronger than hydraulic clutches. Who is correct?

One-way clutches lock to allow torque to be applied during acceleration, and then unlock to break the connection on deceleration, allowing the vehicle to gently coast to a stop. Technician B says brake bands and sprag- or roller-type one-way clutches are stronger than hydraulic clutches. Who is correct?

• A. Technician A
• B. Technician B
• C. Both Technician A and Technician B
• D. Neither Technician A nor Technician B

Answer: (A)

One-way clutches are designed to transmit torque in one direction and freewheel in the opposite direction. When the drivetrain accelerates, the clutch locks, connecting input to output so torque can be transferred. As soon as deceleration begins or torque drops, the clutch unlocks, breaking the connection so the vehicle can coast smoothly to a stop. The description of how the one-way clutch behaves is correct. The idea that brake bands and sprag- or roller-type clutches are inherently stronger than hydraulic clutches isn’t a universal rule; strength and torque capacity depend on specific design and application. So that claim isn’t a reliable general truth, whereas the functional description is.

One-way clutches are designed to transmit torque in one direction and freewheel in the opposite direction. When the drivetrain accelerates, the clutch locks, connecting input to output so torque can be transferred. As soon as deceleration begins or torque drops, the clutch unlocks, breaking the connection so the vehicle can coast smoothly to a stop. The description of how the one-way clutch behaves is correct.

The idea that brake bands and sprag- or roller-type clutches are inherently stronger than hydraulic clutches isn’t a universal rule; strength and torque capacity depend on specific design and application. So that claim isn’t a reliable general truth, whereas the functional description is.