Ridge reamers are being discussed. Technician A says the reamer removes the unworn metal that lies above the ring travel. Technician B says to remove the ridge after removing the piston. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because a ridge reamer is used to remove the unworn metal at the top of the cylinder that is not touched by the piston rings, which forms a ridge over time. Technician B is incorrect because the ridge should be removed before removing the piston to prevent damage to the piston or rings.

Ridge Reamers Are Being Discussed