Standard No.:	QC/T 983-2014
English Name:	Measuring method of cleanliness of automobile manual transmission assembly
Chinese Name:	汽车机械式变速器总成清洁度检测方法
Chinese Classification:	T21    Transmission system
Professional Classification:	QC    Professional Standard - Automobile
Source Content Issued by:	MIIT
Issued on:	2014-10-14
Implemented on:	2015-4-1
Status:	superseded
Superseded by:	QC/T 983-2024 QC/T 983-2025 Measuring method of cleanliness of automobile transmission assembly
Superseded on:	2025-11-1
Abolished on:	2025-11-01
Target Language:	English
File Format:	PDF
Word Count:	5500 words
Translation Price(USD):	130.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the measuring method of cleanliness of automobile manual gearbox assembly. This standard is applicable to the measuring of cleanliness of automobile manual gearbox assembly (hereinafter referred to as "transmission assembly"). 2 Normative References The following referenced documents are indispensable for the application of this standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 14039 Hydraulic Fluid Power - Fluids - Method for Coding the Level of Contamination by Solid Particles QC/T 571 Work Guideline for Cleanliness of Automobile - Nouns and Terms QC/T 574 Work Guideline for Cleanliness of Automobile - Sampling Rules 3 Terms and Definitions For the purpose of this standard, the terms and definitions given in QC/T 571 and the following apply. For the convenience of application, some terms and definitions in QC/T 571 are listed repeatedly. 3.1 cleanliness of gearbox assembly cleanliness of gearbox assembly which has been subject to performance inspection, expressed by the mass, quantity and maximum size of impurity particles. According to different specified methods, the cleanliness of gearbox assembly is classified into disassembly cleanliness and undisassembly cleanliness 3.1.1 disassembly cleanliness disassemble gearbox assembly and measure the cleanliness of specified position with the method as specified in Chapter 4 3.1.2 undisassembly cleanliness

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Measuring Method Annex A (Normative) Determination Method for Quantity of Indoor Fallen Dust Annex B (Informative) Measuring Report for Cleanliness of Gearbox Assembly