Production Phases Of The SD9

Duluth Missabe & iron Range SD9R #314 at Two Harbors Minnesota had been originally constructed as DM&IR #162, a Phase IV SD9 with a conventional high nose.

(Bill Johnson photo in September 1992)


SD9 Sales Brochure Spotting Features

Click any one image to view entire four-page brochure

Phase 1 (January 1954 thru April 1955)

  • Four 36" radiator fans with roof pipes
  • Battery boxes behind cab on both sides
  • Old-style hand-rail stanchions (see photo at bottom left)

  • Dan Poitras photo at St. Paul Minnesota on 27 January 1980 (Ralph Back collection)

Click any one image to view entire four-page brochure

Phase 2 (March 1955 thru January 1958)

  • Four 36" radiator fans
  • Battery boxes behind cab on both sides
  • New-style hand-rail stanchions (see photo at bottom left)

  • Jim Zwerneman photo at Pueblo Colorado on 7 June 197 (**)

Click any one image to view entire four-page brochure

Phase 3 (February thru May 1958)

  • Two 48" radiator fans
  • Battery boxes behind cab on both sides
  • Standard hand-rail stanchions (introduced with Phase 2)

  • R. Craig photo at Napa California on 16 April 1996

Click any one image to view entire four-page brochure

Phase 4 (April thru June 1959)

  • Two 48" radiator fans
  • Taller battery box
  • GP9 style high short hood and cab which produced a noticeable drop from the cab roof to the long hood
  • No Battery boxes behind cab
  • Standard hand-rail stanchions

  • Ralph Back photo at Teague Texas on 22 January 1972

Phase 1 Handrail stanchion employed two-piece bolted bracket

Phase 2 Hand-rail stanchion incorporated a bent-metal clasp

(**) Photo from R. Craig collection

Original upload: 1 December 2022

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