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Lower water jacket cores have areas of a soft blow. These defects have been seen when making cores immediately after the OUW core box have been cleaned. See the attached file for defect examples and concentration diagram. ?In OUW Core Box #3 LH Lower Water Jacket Core Cavity #5, add 6 weep holes (3mm diameter) in the areas shown in the attached file. Tool engineering to determine the locations. Reason for Change: Provide additional venting in the defect area to blow a solid core.

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	File Name	Description	User Name	Upload Date
Delete	2015-1312-C-SAGLHLowerWaterJacketDefects.pptx	ADD 6 WEEP HOLES	(dzsk2p)	11/5/2015 11:07:26 AM

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Program	Part Type	Part #	Design Phase	Location	PTE	Status
HFV6	HEAD	12668127	Prod	Saginaw	Waters, Russ	Complete - Approved

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Location	TM	Approval Date	Priority	Status
Saginaw	Bujouves, Jim	11/5/2015 11:10:14 AM	Normal	Approved