NAVISTAR MPAPS B-6913-2017 Electrical Sealant Grease.pdf
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1、 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MARCH 2017 Page 1 of 4 NAVISTAR, INC. Material, Parts, and Process Specifications
2、 (MPAPS) NUMBER: MPAPS B-6913 Former Designation: TMS-6913 TITLE: Electrical Sealant/Grease CURRENT REV No.: 1703 DATE: March 2017 WRITTEN/EDITED BY: J. Morris APPROVED BY: R. Goluch SUPERSEDES: Rev. 0810 - August 2010 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specif
3、ication may involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prio
4、r to use. 1.0 APPLICATION This specification covers an electrical sealant used in electrical terminal connections to provide a non-electrically conductive film that excludes external contaminants and protects against corrosion. This compound is normally applied as a viscous fluid and is preferred fo
5、r heavy duty electrical sealing applications 2.0 SCOPE This specification covers the general requirements, performance requirements, quality, qualification, source approval and quality control 2.1 Restricted Chemical Substances Effective January 1, 2007, all product supplied to the requirements of t
6、his specification must comply with the requirements of the MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following Specifications, Standards, and Regulations are referenced in this specification. Quality Sy
7、stem Standard ISO 9001 or TS-16949 ASTM B 117 CFR Title 29, Part 1910 NAVISTAR Supplier Packing and Shipping Std. D-13 NAVISTAR Engineering Design Std. A-16 NAVISTAR MPAPS B-50 4.0 REQUIREMENTS The sealant shall be compatible with electrical terminal materials and also the insulation in the terminal
8、 connector. 4.1 Performance Requirements 4.1.1 Heat Aging 4.1.1.1 Method Apply sealant to the female cavity of a molded connector (NAVISTAR P/N 418655-C1). Age sealed assembly for three days at room temperature before testing. Measure voltage drop across the connector before and after heat aging in
9、a recirculating air oven for 24 hours at 122 1C (250 2F). Voltage drop shall be measured with 1 ampere flowing through the connector. NUMBER: MPAPS B-6913 TITLE: Electrical Sealant/Grease REVISION: 1703 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without perm
10、ission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2017 by Navistar, Inc. MARCH 2017 Page 2 of 4 4.1.1.2 Required Voltage drop change: 10.0 millivolts maximum. Sealant shall show no movement or exuding of the base oil, and there shall be neither a loss
11、in pliability nor incipient cracking. 4.1.2 Corrosion 4.1.2.1 Method Install a separate sealed connector in salt spray (ASTM B 117) with 14 volts across the connector (12 ohms, 25 watt resistive load). Test for 168 hours and allow to dry for four hours. Apply 50 volts DC to connector terminals to me
12、asure leakage current. 4.1.2.2 Required Voltage drop change: 10.0 millivolts maximum. Leakage current: 5.0 microamperes maximum. Terminals shall be free from corrosion on contact surfaces. 4.1.3 Resistance Determination 4.1.3.1 Method Electrical sealant shall be subjected to 500 volts DC charge acro
13、ss one square inch, one millimeter thick coating of sample grease. 4.1.3.2 Required The measured electrical resistance shall be no less than 2 megohms. 4.1.3.3 Equipment Beckman Model L-8 Megohmmeter PT-0108 Resistance Test Fixture 4.1.4 Vertical Sag Test 4.1.4.1 Material (a) One - 4“ x 12“ (approx.
14、) cold rolled plain steel panel with a centered holed at one end for hanging (available from ACT Test Panels LLC, 273 Industrial Drive, Hillsdale, MI 49242; phone (517) 439-1485) (b) Triangular grease bead with a 1/2” height and 1/2” base across the width of the panel. (c) Forced convection oven cap
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