QC/T 580-2022Mounting dimensions of automobile transmission assembly (English PDF)

Foreword

This document was in accordance with the requirements of GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".

This document replaces QC/T 580-1999 "Automobile transmission - Mounting dimensions". Compared with QC/T 580-1999, except for editorial changes, the main technical changes are as follows:

- MODIFY the installation dimensions of the front end of the transmission assembly (see 4.1; Chapter 2 of 1999 edition);

- ADD the installation dimension of the rear end of the transmission assembly (see 4.2);

- DELETE the center distance grouping of the transmission assembly (see Chapter 2 of the 1999 edition);

- DELETE the installation dimensions of the front face of the transmission case and the rear face of the clutch case (see 2.1 ~ 2.5 of the 1999 edition).

1 Scope

This document specifies the installation dimensions of the interface -- between the front end of the transmission assembly and the engine or drive motor, AND the interface -- between the rear end and the transmission components.

This document applies to automotive mechanical transmission assemblies.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, for dated references, only the version corresponding to the date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.

ISO 7646 Commercial vehicles and buses - Gearbox flanges - Type A ISO 7647 Commercial vehicles and buses - Gearbox flanges - Type S

ISO 8667 Commercial vehicles and buses - Cross-tooth gearbox flanges - Type T

3 Terms and definitions

This document does not have terms and definitions, that need to be defined.

4 Installation structure of automobile transmission assembly

Figure 1 shows a schematic diagram of the single output installation of the front end of the automotive transmission assembly and the engine or drive motor, as well as its rear end and transmission components. The dual output or multiple output structure is implemented with reference to the single output structure. […]