Discoloration of a planetary gear set can be a sign of a failed lubrication circuit in the transmission and must be repaired before the discolored gears are replaced and the automatic transmission is placed back into service.

Question

Quizplus · Accepted Answer

Discoloration of gears often indicates overheating, which can be caused by inadequate lubrication. Addressing the lubrication issue is crucial before replacing gears to prevent recurrence of the problem.

Discoloration of a Planetary Gear Set Can Be a Sign