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. 2014 by Navistar, Inc. August 2014 Page 1 of 2 NAVISTAR, INC. Material, Parts, and Process Specification
2、s (MPAPS) NUMBER: MPAPS BT-28 Former Designation: CEMS BT-28 TITLE: Compatibility and Dispersibility Test CURRENT REV No.: 1408 DATE: Aug 2014 WRITTEN/EDITED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES: CEMS BT-28 - August 2009 PRINTED COPIES OF THIS DOCUMENT MUST BE VERI
3、FIED FOR CURRENT REVISION This specification 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 ap
4、plicability of regulatory limits prior to use. Change Notice: Updated to new MPAPS format; editorial changes. 1.0 SCOPE This method covers a test procedure for determining the compatibility of stopleak compounds with engine cooling systems and their dispersibility in water and antifreeze. 2.0 APPARA
5、TUS 2.1 2000 milliliter Pyrex beakers, or equivalent 2.2 Hot plate or laboratory burner 2.3 U.S. Standard sieves, 3 inch diameter, size No. 16 and No. 30 2.4 Thermometer, 0 - 220 Fahrenheit 2.5 Glass stirring rod 3.0 MATERIAL 3.1 Distilled water 3.2 Antifreeze mixture consisting of equal parts disti
6、lled water and MPAPS B-1, Coolant Concentrate, Ethylene Glycol Base. 4.0 PROCEDURE 4.1 Place one pellet or one container of combination liquid and solid compound into each of two 2000 milliliter beakers, one containing 1500 milliliters of distilled water and one containing 1500 milliliters of antifr
7、eeze mixture, maintained at 180F + 5. 4.2 Maintain a temperature of 180F + 5 without external agitation for a period of 1/2 hour. 4.3 At the end of this time period, stir the liquid and pour the contents of the beaker through U.S. Standard No. 16 and No. 30 sieves stacked with No. 16 on top. 4.4 Rin
8、se any remaining solid matter from the beaker with one liter of distilled water passing the washing carefully through the stacked screens. 5.0 REPORT The solid matter, percent by weight, retained on the No. 16 sieve and the No. 30 sieve. NUMBER: MPAPS BT-28 TITLE: Compatibility and Dispersibility Te
9、st REVISION: 1408 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. 2014 by Navistar, Inc. August 2014 Page 2 of 2 6.0 TECHNICAL INFORMATION For further in
10、formation related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inverness Way East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/
