Determine wear on internal engine parts, using precision standard and metric measuring tools.

Determination should be made by identifying wear points of internal engine parts and checking them for wear, using appropriate tools and precision measuring devices, according to manufacturer's specifications and instructor's guidelines.

Process/Skill Questions:

• What precision tools are used to measure internal engine parts?
• Why are precise measurements critical in the process of rebuilding a 4-cycle engine?
• Why must extreme care be given to precision measuring instruments?