The piston pin shown in the illustration...

🔍 Key Concepts

• Study how the piston pin is held in place in the illustration, especially the connection to the connecting rod small end. • Review the definitions of full floating, semi-floating, and fixed piston pins in standard diesel engine theory. • Look closely for any locking screw, clamp, or circlip that prevents the pin from moving relative to either the piston or the connecting rod.

💭 Think About

• Does the pin appear free to rotate and move slightly in both the piston bosses and the connecting rod, or is it locked to one of them? • If there is a visible bolt or screw going into the pin, what does that tell you about whether the pin can rotate with the connecting rod or with the piston? • Which piston pin type is defined as being rigidly attached to one member (piston or rod) but free to move in the other?

✅ Before You Answer

• Identify whether the pin has retaining clips at the piston bosses or a locking screw through the rod. • Confirm if there is any way for the pin to slide sideways out of the piston; if not, what is holding it? • Match what you see: pin fixed to one part, free in the other vs pin free in both parts vs pin fixed in both parts before selecting your choice.

The piston pin shown in the illustration should be classified as __________. Illustration MO-0011

full floating

fixed

semi-floating

anchored

🔍 Key Concepts

💭 Think About

✅ Before You Answer