Standard No.:	QC/T 77-1993
English Name:	Specifications of Drum Brake Wheel Cylinder Assembly for Automobile Hydraulic Braking
Chinese Name:	汽车液压制动轮缸技术条件
Chinese Classification:	T24    Braking system
Professional Classification:	QC    Professional Standard - Automobile
Issued on:	1993-10-20
Implemented on:	1994-10-1
Status:	superseded
Superseded by:	QC/T 77-2015 Specifications and bench test methods of automobile hydraulic brake wheel cylinder
Superseded on:	2016-1-1
Superseding:	JB 540-1964
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	489.0
Delivery:	via email in 1 business day

1 Subject Content and Application Scope This standard specifies product classification, technical requirements, test methods, inspection rules, mark, package, transport and storage of drum brake wheel cylinder assembly for automobile hydraulic braking. This standard is applicable to wheel cylinder assembly for automobile hydraulic braking drum brake of non-petroleum base brake fluid (hereinafter referred to as wheel cylinder; See Figure 1 and Figure 2). 2 Normative References JB 2759 "General Specification for Packagings of Mechanical and Electrical Products" GB 2828 "Sampling Procedures and Tables for Lot-by-lot Inspection by Attributes" GB 10830 "Specifications of Using Automobile Brake Fluid" GB 7524 "Hydraulic Brake Rubber Cups for Automobiles" GB 1801 "Limits and Fits-Dimension to 500mm Orifice, Axial Tolerance Zones and Fits" GB 1030 "Surface Roughness-Parameters and Their Values"