Title: Identify internal engine parts.
Course: Small Engine Repair (20110-18) > Section: Examining Internal Engine Parts

Identification should include

- pistons
- rings
- piston connecting rod
- bearing
- piston pin
- retaining ring
- camshaft assembly
- crankshaft
- oil slinger/dipper.

Process/Skill Questions:

- What are the manufacturer’s specifications for cleaning or replacing the piston rings and piston?
- What are the implications of not having a clean piston and rings?
- What conflicts might one encounter when inspecting the piston rod and bearings?
- What causes wear on the piston rod and bearings?
- What tools are necessary for the installation of the piston and rod assembly?
- What direction should the piston be installed into the cylinder?
- What consequences may result if a person does not follow the manufacturer’s directions and specifications when reinstalling the piston?
- What is the manufacturer’s recommendation for torque on the rod cap bolts?
- What are the timing marks? How should they be positioned? If the timing marks are one or two teeth off in any direction, how will this affect the valve timing and engine performance?
- What is the procedure for installing a crankshaft?
- Where are the timing marks located?
- Which end of the crankshaft should be installed first?
- What happens if the timing marks are improperly aligned?