Union Pacific's Heritage Fleet, Diesel Locomotives

General Notes:

1. Rebuilt in 1982 by UP Omaha Shops from UP SW7 1821.
2. Assigned to passenger service, as UP 1243, in January 1993 and retained as part of heritage fleet at Cheyenne, Wyoming.
3. Renumbered from UP 1243 to UP 96 in January 1998
4. Donated to Oregon Rail Heritage Foundation in Portland, Oregon; moved from Cheyenne to Portland in mid-October 2016.

General Notes:

1. UP 949 was built in May 1955; first retired by UP in September 1972; sold to C&NW, renumbered to C&NW 511; sold to METRA, after that agency's takeover of the C&NW Chicago commuter operations; UP acquired the unit (along with an ex UP sleeper) from Kasten Rail Car Services in trade for an ex MP business car "Houston" to have a second E-unit to operate with UP 951 on special passenger trains; arrived at Cheyenne on September 11, 1990.
2. UP 951 was built in June 1955; first retired by UP in June 1980; reinstated in February 1984 to stand-in on UP's special trains for steam 4-8-4 844 while that locomotive was on display at the New Orleans World's Fair; both generators damaged during an Operation Lifesaver special, both generators replaced using generators from retired SW7/SW9 units; returned to service in September 1984.
3. UP 949 and 951 were sent to VMV Enterprises, Paducah, Kentucky, in June 1992 to be completely remanufactured; the remanufacture effort included a new 16 cylinder 2000-horsepower EMD 645 engine (replacing the original twin 12-cylinder 1,200-horsepower 567 engines), with an AR10 alternator and electrical systems similar to a GP38-2; completed in late April 1993.
4. "Union Pacific" lettering on nose was removed between December 1999 and May 2000; lettering reinstated in July 2015 for Cheyenne Frontier Days special.
5. SmartStart and cab air conditioning installed during January 2001.
6. During the summer of 2003 the nose doors on both UP 949 and 951 were welded shut at North Little Rock, to improve grade crossing safety following 6936's grade crossing accident (in late 2000). The crack around the doors was filled and repaired; but the door handles, grab irons, and the doors themselves remained. Labels were applied saying "No Entrance." SD70-style wings were applied at the same time.
7. During November 2003 the Cheyenne shop removed the doors, door handles, and grab irons. The entire nose was repaired with a smooth surface and original "Classic" wings were applied.
8. Both units received a full repaint by Mid America Car in Kansas City in July 2005.
9. UP 949 and 951 have been out of service since August 14, 2017; reported as being out of service due to needed replacement of wheel and axle assemblies.
10. (Read more about UP 949 and 951 in regular service on Union Pacific)

General Notes:

1. UP 963B was built in October 1955 as UP 970B; originally retired in June 1972, and leased to Amtrak as 468; sold to Amtrak in November 1973; rebuilt to Amtrak steam generator car 1919, renumbered later to Amtrak 669; sold to Alaska Railroad; sold to Feather River Rail Society, Portola, California; donated back to UP; arrived at Cheyenne in December 1990.
2. UP 963B (as temporarily numbered UP 970B) was sent to VMV Enterprises, Paducah, Kentucky, in June 1992 to be completely remanufactured; the remanufacture effort included a new 16 cylinder 2000-horsepower EMD 645 engine (replacing the original twin 12-cylinder 1200-horsepower 567 engines, removed when it was rebuilt as an unpowered steam generator car for Amtrak in 1975), with an AR10 alternator and a GP38-2 design electrical system; completed in late April 1993.
3. UP 963B was renumbered from UP 970B on April 20, 1993 while being repainted at VMV upon completion of remanufacture; although the unit is the former UP 970B, the frame number was misread by a railfan (frame number 2070-B4 vs. 2072-B4) and the unit was widely reported as being originally UP 963B. The frame number was later verified as being 2072-B4, making the unit UP 970B. Without any conflicting numbers on UP at the time, the new number was retained to both simplfy records, and to avoid additional costs of unnecessary changing of company records.
4. Fully repainted by Mid America Car in Kansas City in July 2005.
5. UP 963B has been out of service since June 30, 2016.

General Notes:

1. UP 966B was built in June 1955; first retired by UP in June 1972; was sold to Amtrak 466 in September 1972; retired by Amtrak in late May 1974; rebuilt in late 1975 by ICG-Paducah to unpowered Amtrak steam generator car 1920; renumbered to Amtrak 670 in mid 1977; sold to Heart of Dixie Chapter, NRHS, in May 1983 (numbered as HODX 670); sold to UP in February 1995; stored at Cheyenne, Wyoming, as part of heritage fleet.
2. On April 28, 2022, Union Pacific, in a joint press release with the non-profit Railroading Heritage of Midwest America organization, announced the donation of UP 2-10-2 5511, together with 4-6-6-4 3985, and other equipment, including E9B 966. The equipment was moved as part of what was called a "Donation Special" that departed Cheyenne on November 11, 2022, and arrived at Silvis, Illinois, on November 19, 2022.
3. (Read more about the donation to RRHMA)

General Notes:

1. Built on EMD order number 7198.
2. UP 6936 operated in regular freight service from 1971 to mid-1980; stored at Yermo, California, until February 1984; operated in regular freight service, along with 25 other 6900-class locomotives, from March 1984 through May 1985; last operating DDA40X in service on UP, removed from regular freight service on May 6, 1985.
3. Transferred to Heritage Fleet at Cheyenne; first used in excursion service on May 24, 1985.
4. Equipped with D87 traction motors (same as GP40X) in fall of 1990 at Cheyenne, Wyoming
5. Life Extension overhaul completed December 6 to December 21, 1994 by UP's Jenks Shops at North Little Rock, Arkansas, after being stored at North Little Rock since September 16, 1994; Life Extension overhaul included remanufactured electrical equipment and new 645E3B engines; sent to Salt Lake City during January and February 1995 for overhaul of trucks, including rebuilt D87 traction motors (briefly stored at Salt Lake City mounted on SD40-2 trucks while awaiting completion of the overhaul), completed in late February 1995.
6. Wrecked (grade crossing accident) on November 30, 2000 at Vacherie, Louisiana, 20 miles north of New Orleans; repaired and returned to service, with the new winged shield emblem on the nose, completed on May 2, 2001.
7. UP 6936 was last used in special service in July 2015 for the Cheyenne Frontier Days special, then to move the same passenger equipment from Denver to Council Bluffs after Cheyenne Frontier Days, then again briefly on July 12, 2016 to test the recently rebuilt 4-8-4 844; stored unserviceable (with electrical problems) since July 2016 in the Cheyenne roundhouse. Prior to Cheyenne Frontier Days special in 2015, its last use was in June 2012 pulling a special train during the annual Dunsmuir Railroad Days at Dunsmuir, California. The special Dunsmuir train was made up of equipment borrowed from the Western Pacific Railroad Museum at Portola, California.
8. UP 6936 could no longer operate over Union Pacific tracks in the leading position until Positive Train Control (PTC) equipment was installed.
9. On April 28, 2022, Union Pacific, in a joint press release with the non-profit Railroading Heritage of Midwest America organization, announced the donation of UP 2-10-2 5511, together with 4-6-6-4 3985, and other equipment, including DDA40X 6936. The equipment was moved as part of what was called a "Donation Special" that departed Cheyenne on November 11, 2022, and arrived at Silvis, Illinois, on November 19, 2022.
10. (Read more about the donation to RRHMA)
11. UP 6936 was repaired and returned to operational condition, making its first run along yard tracks in Silvis, on August 19, 2023. The locomotive was built 52 years ago.