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FORD WM920

2009 Edition, December 8, 2009

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GENERAL SPECIFICATION FOR PORT PLUG



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Product Details:

  • Revision: 2009 Edition, December 8, 2009
  • Published Date: December 8, 2009
  • Status: Active, Most Current
  • Document Language: English
  • Published By: Ford Motor Company (FORD)
  • Page Count: 4
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This specification describes the dimensional and performance requirements of an internally driven o-ring plug intended for installation into a WM921, ISO 6149-1 or SAE J2244/1 port.

The plug original application was to seal hydraulic pressure to 63 MPa (630 Bar). Actual performance will vary when installed into typical engine or transmission component material and when sealing fluid other than hydraulic fluid. However, it is expected that the sealing performance shall be sufficient for most engine and transmission applications.

This plug is intended to seal engine oil, engine coolant and transmission fluids between -30° and 150°C.

• The plug generally follows the dimensions of the ISO 6149-4 internal hex plug except:

• Plugs seats on the angled surface for improved sealing and anti-loosening Smaller o-ring for better fit in the smaller groove area

• Different o-ring material for increased temperature range and fluid compatibility

• Hex size, s, increased for weight savings on larger size plugs

• Hex chamfer diameter increased for better bit engagement during automated assembly

• Hex drill diameter modified to provide relief for hex broach

• Identification groove is not permitted.

• Recommended torque is reduced because of wedging action created by the angles seat

• Permissible indent on pilot end for weight savings.

• Short pilot added to improve automated assembly.