Cleanliness and Care

Throughout this section, it should be understood that proper cleaning and protection of machined surfaces and friction areas is part of the repair procedure. This is considered standard shop practice even if not specifically stated.
When any internal engine parts are serviced, care and cleanliness is important.
When components are removed for service, they should be marked, organized or retained in a specific order for assembly. Refer to Separating Parts .
At the time of installation, components should be installed in the same location and with the same mating surface as when removed.
An automobile engine is a combination of many machined, honed, polished and lapped surfaces with tolerances that are measured in millimeters or thousandths of an inch. These surfaces should be covered or protected to avoid component damage.
A liberal coating of clean engine oil should be applied to friction areas during assembly.
Proper lubrication will protect and lubricate friction surfaces during initial operation.