Which statement is consistent with recommended practice for ridge removal and piston removal timing?

Which statement is consistent with recommended practice for ridge removal and piston removal timing?

• A. Remove ridge after piston removal
• B. Remove ridge before piston removal
• C. Ridge removal timing is not important
• D. Remove ridge after cleaning

Answer: (B)

Best practice is to remove the cylinder ridge before pulling the piston. The ridge is a raised edge on the bore that can catch, bind, or gouge the piston rings and smooth bore if you try to force the piston past it. By removing the ridge first, you create a clean, unobstructed path for the piston to come out, reducing the risk of damaging rings, ring lands, or the cylinder walls and preventing debris from causing further issues. Removing the ridge after the piston is already out can lead to damage to the piston rings or bore as you maneuver the piston through the stubborn edge, and simply cleaning the area doesn’t eliminate the obstruction or protect the surfaces. So the timing matters for both safety and the quality of the work.

Best practice is to remove the cylinder ridge before pulling the piston. The ridge is a raised edge on the bore that can catch, bind, or gouge the piston rings and smooth bore if you try to force the piston past it. By removing the ridge first, you create a clean, unobstructed path for the piston to come out, reducing the risk of damaging rings, ring lands, or the cylinder walls and preventing debris from causing further issues.

Removing the ridge after the piston is already out can lead to damage to the piston rings or bore as you maneuver the piston through the stubborn edge, and simply cleaning the area doesn’t eliminate the obstruction or protect the surfaces. So the timing matters for both safety and the quality of the work.