本SAE推荐规程包括安装配置的类型以及该类型机器特有的主要部件和零件的名称。此处使用的插图并不打算包括所有现有的商用机器，也不打算准确描述任何特定机器。它们用于描述应用本文件时使用的原则。

This SAE Recommended Practice includes the types of mounting configurations and the names of major components and parts peculiar to this type of machine. Illustrations used here are not intended to include all existing commercial machines or to be exactly descriptive of any particular machine. They have been provided to describe the principles to be used in applying this document.