1、 WORLDWIDE ENGINEERING STANDARDS General Specification GMW14564 Exhaust System Threaded Fasteners Copyright 2011 General Motors Company All Rights Reserved July 2011 Originating Department: GME Specification Center Page 1 of 4 1 Introduction Note: Nothing in this standard supercedes applicable laws
2、and regulations. Note: In the event of conflict between the English and domestic language, the English language shall take precedence. 1.1 Scope. This General Specification contains the general requirements and associated tests regarding screw-fastening elements for exhaust systems. 1.2 Mission/Them
3、e. Threaded fasteners are used to connect individual components of the exhaust system. 1.3 Classification. Not applicable. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. GMW
4、3059 GMW3286 GMW14566 GMW15139 3 Test Preparation and Evaluation 3.1 Resources. According to the relevant test procedures. 3.1.1 Calibration. The test facilities and equipment shall be in good working order and shall have a valid calibration label. 3.1.2 Alternatives. Alternative test facilities and
5、 equipment may also be used. However, all measuring variables as specified in this standard shall be determined correctly with respect to their physical definition. 3.1.3 Facilities. According to the relevant test procedures. 3.1.4 Equipment. According to the relevant test procedures. 3.1.5 Test Veh
6、icle/Test Piece. According to the relevant test procedures. 3.1.6 Test Time. According to the relevant test procedures. 3.1.7 Test Required Information. According to the relevant test procedures. 3.1.8 Personnel/Skills. According to the relevant test procedures. 3.2 Preparation. According to the rel
7、evant test procedures. 3.3 Conditions. 3.3.1 Environmental Conditions. According to the relevant test procedures. 3.3.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, repor
8、ts, etc. 3.4 Instructions. According to the relevant test procedures. 3.5 Data. According to the relevant test procedures. 3.6 Safety. This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use.
9、It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction o
10、r networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14564 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 2 of 4 3.7 Documentation. Samples of components or material released to this standard shall be tested for conformity with the requi
11、rements of this standard and approved by the responsible GM Department prior to the start of delivery of production level components or materials. Any change to the component or material, e.g., design, function, properties, manufacturing process and/or location of manufacture requires a new release
12、of the product. It is the sole responsibility of the supplier to provide the customer, unsolicited, with documentation of any change or modification to the product/process, and to apply for a new release. If not otherwise agreed to, the entire verification test shall be repeated and documented by th
13、e supplier prior to start of delivery of the modified or changed product. In some cases, a shorter test can be agreed to between the responsible GM department and the supplier. 3.7.1 Test Results. The test results shall be summarized in a test report. 4 Requirements and Procedure 4.1 Dimensioning. F
14、or component and assembly dimensions, see part math data. 4.2 Functional Test. 4.2.1 Resistance to Temperature Cycling. The threaded fastener joint to be tested shall be fitted at (+23 5) C at the minimum test moment Mpmin (torque) according to the math data. Individual threaded fasteners shall be s
15、prayed with a salt spray solution according to GMW3286. Tested parts shall be subjected to 10 test cycles of the temperature cycling test. One test cycle consists of the following steps: a. Place test pieces in the oven at (+23 5) C b. Heat oven to +650 C and maintain this temperature for 1 h c. Coo
16、l oven to (+23 5) C and maintain for 1 h d. Start of a new cycle e. After the fifth cycle, the individual threaded fastener joints shall be sprayed with salt spray solution again f. The test is complete after 10 cycles Note: Clamped exhaust system joints are excluded from this test. 4.2.2 Detachabil
17、ity. The threaded fastener joints shall be demounted after the alternating temperature test has been completed. With disassembly, the threaded fasteners shall be able to be released without any destruction. 4.3 Stress Measurement. Test to GMW14566. 4.4 Corrosion Test. The corrosion resistance shall
18、be determined according to the material requirements. 4.5 Material Tests. See part math data. 5 Provisions for Shipping Not applicable. 6 Notes 6.1 Glossary. Not applicable. 6.2 Acronyms, Abbreviations, and Symbols. CTS Component Technical Specification SSTS Subsystem Technical Specification VTS Veh
19、icle Technical Specification 7 Additional Paragraphs 7.1 All parts or systems supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for Resa
20、leNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14564 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 3 of 4 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: GMW1456
21、4 9 Release and Revisions This standard was originated in October 2005. It was first approved by the Global Exhaust Center in March 2006. It was first published in April 2006. Issue Publication Date Description (Organization) 1 APR 2006 Initial publication. 2 JUL 2011 5 year refresh; transferred int
22、o new template Paragraphs 2.2 and 4.3: GME 08213 replaced by GMW14566 Paragraph 4.1: “The dimensioning and arrangement to GME 08215.“ removed Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without licens
23、e from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW14564 Copyright 2011 General Motors Company All Rights Reserved July 2011 Page 4 of 4 Appendix A Table A1: Validation Cross Reference Index Requirement GMW14564 Paragraph Validation Procedure Method Level Component / Assembly Dimensions 4.1 see pa
24、rt math data Inspection Component Temperature Cycle Test 4.2.1 see paragraph Test Component Detachability 4.2.2 see paragraph Test Component Stress Measurement 4.3 GMW14566 Test Component Material 4.4 see part math data Inspection Component Restricted and Reportable Substances 6.1 GMW3059 Inspection Component Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
