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. 2009 by Navistar, Inc. AUGUST 2009 Page 1 of 2 NAVISTAR, INC. CEMS (CORPORATE ENGINEERING MATERIAL SPECI
2、FICATION) NUMBER: CEMS BT-29 TITLE: Test For Leak Stoppage Of Cooling System Stopleak Compounds CURRENT ISSUE DATE: August 2009 WRITTEN/REVIEWED BY: Materials Engineering APPROVED BY: Materials Engineering SUPERSEDES ISSUE OF: October 2001 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT
3、 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 applicability of r
4、egulatory limits prior to use. Change Notice: Replaced “International Truck and Engine Corporation” with “Navistar, Inc.” per corporate directive. 1.0 APPLLICATION This method covers a test procedure for determining the ability of cooling system stopleak compounds to temporarily stop leaks. 2.0 SCOP
5、E This test method describes the test procedure for evaluating stopleak compounds. 3.0 APPARATUS 3.1 Test container: a one-quart cylindrical tin-coated steel can, such as a paint can, with four 1/32-inch diameter holes drilled at approximately one inch from the bottom of the can and equally spaced a
6、round its perimeter. All burrs are to be removed from the edges of the holes. 3.1 Electric stirrer, variable speed having a two-blade impeller 1-3/4 inches in diameter 3.2 Pan or tray to collect draining 3.3 Wooden dowel rod or pencil, 1/4 inch diameter by 6 inches long 3.4 Pyrex beaker, 1000 millil
7、iters 3.5 Graduated cylinder, 1000 milliliters 3.6 Balance capable of weighing to a sensitivity of 0.1 gram 3.7 Hot plate or laboratory burner 4.0 MATERIAL 4.1 Test Fluid A: Use a representative sample based on a mixture of one pellet (Type 1) or one container (Type 2) and 20 quarts (640 ounces) of
8、distilled water. 4.2 Test Fluid B: Use a representative sample based on a mixture of one pellet (Type 1) or one container (type 2) and 20 quarts (640 ounces) of a 50/50 mixture of distilled water and CEMS B-1, Antifreeze, Single Phase, Ethylene Glycol Base. Copyright Navistar International Corporati
9、on Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS BT-29 TITLE Test For Leak Stoppage Of Cooling System Stopleak Compounds CURRENT ISSUE DATE: August 2009 This document is restricted and may not be sent outside
10、Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2009 by Navistar, Inc. AUGUST 2009 Page 2 of 2 5.0 PROCEDURE 5.1 Heat 800 milliliters each of Test Fluids A and B to 180 5 degrees Fahrenheit. Thoroughly mix unt
11、il stopleak is completely dispersed. 5.2 Pour the hot mixture into the test container, which is suspended over the pan or tray, and immediately lower the stirrer to within one inch of the bottom of the container and stir at a speed of 1000 to 1500 revolutions per minute. 5.3 Observe the time require
12、d to completely stop leakage from all holes (disregard occasional seepage). 5.4 At the end of 1-minute stirring, sharply strike the side of the test container with the wooden rod at approximately one inch from the bottom. Observe the time required to stop all leakage (again disregard all occasional
13、seepage). 5.5 Continue stirring for 5 minutes observing for leaks other than occasional seepage. 5.6 At the end of the 5-minute stirring, again sharply strike the side of the test container with the wooden rod and observe the time it takes to re-stop leakage from all four holes. 6.0 REPORT Report th
14、e time to stop leaks in seconds for each test fluid mixture - After: 6.1 Start of stirring; 6.2 1 minute of stirring; 6.3 5 minutes of stirring. Copyright Navistar International Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
