1 Scope
This standard specifies the product classification, performance requirements, test apparatus, test requirements and test methods for automobile hydraulic drum brake wheel cylinder assemblies (hereinafter referred to as "wheel cylinders").
This standard is applicable to the wheel cylinders that use non-petroleum base brake fluids.
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 12981 Motor vehicle brake fluids
GB/T 7762-2003 Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Static strain test
3 Product classification
Foreword i
1 Scope
2 Normative references
3 Product classification
4 Performance requirements
5 Test apparatus
6 Test requirements
7 Test methods
1 Scope
This standard specifies the product classification, performance requirements, test apparatus, test requirements and test methods for automobile hydraulic drum brake wheel cylinder assemblies (hereinafter referred to as "wheel cylinders").
This standard is applicable to the wheel cylinders that use non-petroleum base brake fluids.
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 12981 Motor vehicle brake fluids
GB/T 7762-2003 Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Static strain test
3 Product classification
Contents of QC/T 77-2015
Foreword i
1 Scope
2 Normative references
3 Product classification
4 Performance requirements
5 Test apparatus
6 Test requirements
7 Test methods
