1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-4603 Method for Gaging Seal Lip Opening Pressure This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW3157. 6d * P- 6)Y ?U9I - Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program .Bd# G
2、MW3157 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved November 2011 Originating Department: GM Korea Engineering Standards Page 1 of 3 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of conflict between the
3、Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This standard provides a method for gaging lip opening pressure of radial lip type seals. Lip opening pressure is related to a standard air flow occurring between the lip and a test mandrel when air is applied to on
4、e side of the seal assembly. 1.2 Applicability. This standard is applied to radial lip type used for passenger car. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 A
5、dditional References. None 3 Resources 3.1 Equipment. 3.1.1 Apparatus such as shown in Figure 1. 3.1.2 One test mandrel for each seal application under consideration; diameter of each equal to the mean of the shaft diameter limits specified on the seal drawing with a mandrel diameter tolerance of 0.
6、013 mm. 3.1.3 One retainer ring for each size seal assembly to be measured. Inside diameter (0.025 to 0.050 mm) greater than the maximum specified seal case diameter. 1 P7 :0 : ., E:48 6+8p) 957%T & *0 4G 7 +&)D (Mandrel)187 -P2F# 76 H*7 4%P$ . 1.2 957 -88 . ., 8t 37=7 * GI48 6d7 FF7 957F$ . 2 4) E:
7、4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . None 2.2 GM E:4 / . None 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x . 3.1.1 8?# ,* 17 .(7 :# -H7t M$ . 3.1.2 6d $+7 9I%P : F8 D0 M8t 558 6d 9578x )XF :7 $4F 0.013 mm 8 +&)D : )=* 4: 4G 7 +&)D (Mandrel). 3.1.3 5 A d8 6d7 $4F7 ?U9I%P !8 $4
8、 9I 6d 483 .($ A (0.025 72P 0.050 mm) *B8“ )d )=8? . Figure 1 / ,* 1 4 Procedures 4.1 Conditions. 4.1.1 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.2 Ins
9、tructions. 4.2.1 When both seal lip opening pressure and free lip diameter measurements are to be taken consecutively, diameter shall be measured first to avoid errors due to deformation of the materials. For accurate results, lip opening pressure measurements shall not be repeated on the same seal
10、within a 16 hours period. 4 4G 9%L66 F$ . 4.2.3 +&)D 887t *B8“) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 NOV 2011 Apply new Engineering Standard Template. Superceded (Lub, Vent & Fastener Development Team) / 4 d3TE:4 64 957 . F9I957 =* (Lub, Vent & FastenerP-PD4 )
