1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev 01 2011 11 03 N Status Replaced by WSS-M99P25-C A. Reaume, NA 2007 10 11 Activated A. Reaume Printed copies are uncontrolled Copyright 2011, Ford Global Technologies, LLC Page 1 of 2 WATER QUALITY, INITIAL FILL - ENGINE COOLANT WSS-M99P25
2、-B NOT TO BE USED FOR NEW DESIGN 1. SCOPE The water defined by this specification is intended to provide a guideline for water purity used with engine coolants. 2. APPLICATION This specification was released originally for potable water which, when mixed with WSS-M97B51-A1 engine coolant, will not c
3、ause precipitation of corrosion inhibitors. This specification is for both initial fill and service use. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-
4、A). 3.2 ALL VALUES ARE MAXIMUM PPM (MG/L) ALLOWED EXCEPT AS INDICATED Chloride 50 (EPA 9056 or equivalent) Sulfate 200 (EPA 9056 or equivalent) Total Hardness (as CaCO3) 200 (ASTM D 1126 or equivalent) Iron 5 (EPA 6010B or equivalent) Metals (other than Fe, Na, Ca, Mg and K), max per metal 1 (EPA 60
5、10B or equivalent) Sulfide 1 (EPA 9030B or equivalent) If sulfides are not measured analytically a fresh water sample shall have no detectable “rotten egg” odor. Phosphate as PO4, max 50 (EPA 9056 or equivalent) ENGINEERING MATERIAL SPECIFICATION WSS-M99P25-B Printed copies are uncontrolled Copyrigh
6、t 2011, Ford Global Technologies, LLC Page 2 of 2 pH, pH Units 5.0 - 9.0 (EPA 9040C or equivalent) Specific Conductivity, uS/cm, max 500 (EPA 9050A or equivalent) Particulates Particulate solids above 100 micrometers must be filtered using an inline water filter. 4. ENGINEERING RESPONSIBILITY Each Vehicle Operations (VO) plant shall be responsible for attaining this specification according to their own incoming water quality.
