Practice question

What is the function of the planet carrier in a planetary (epicyclic) gear set?

  1. To drive the transmission oil pump.
  2. To hold the planetary pinion gears in mesh with the sun gear and ring gear, rotating them as a group.
  3. To lock the torque converter clutch.
  4. To filter the transmission fluid.

Answer: B — To hold the planetary pinion gears in mesh with the sun gear and ring gear, rotating them as a group.

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