To convert a vane type hydraulic pump to a hydraulic motor, which of the following would have to be done?

Correct Answer: Option A — Provide small springs between the vanes and the base of the vane slots.

Vane pumps rely on centrifugal force to keep vanes against the cam ring. In a motor, centrifugal force is insufficient at startup, so springs are required to ensure the vanes maintain a positive seal against the ring, allowing the fluid pressure to exert torque on the rotor.