What is guide?

guide sleeve

Glossary “guide sleeve” Definition:
Tubular sleeve that is placed on a connecting rod bolt when it is removed or installed, to prevent the bolt threads from scratching the crank pin.

guide coat

Glossary “guide coat” Definition:
A reference coat. The color of the topcoat is different from the color of the undercoat, and the system is used to serve as a guide coat in sanding to control sanding depth. The system aids in determining when a smooth surface has been reached.