UP Diesel Roster, 1934-2009, Miscellaneous units

GE 44 ton — 1 unit
380 horsepower; B-B trucks; 88,600 pounds operating weight

Road Number	First Number	Second Number	Third Number	Builder Date	Builder Number	Date Retired	Notes
UPMW 903999	GE 1399	UP 1399	UPMW 03999	Feb 1947	28344	Jun 1974	1

General Note:

UPMW 903999 was built new as GE demonstrator 1399, delivered to Union Pacific on 28 March 1947; sold to UP on 8 May 1947. UP 1399 renumbered to UPMW 03999 in October 1956; renumbered to UPMW 903999 in December 1959; used at maintenance of way equipment shop at Pocatello, Idaho, from October 1956 until 1972; sent to Omaha for a complete rebuild in late 1972, completed in February 1973; used as Omaha shop switcher until retirement in 1974.

Note:

1.	Sold to Diesel Supply Co., in June 1974; sold to General Dynamics, Electric Boat Division, Groton, Connecticut in August 1974, named "Diane"; donated to Danbury Railroad Museum, Danbury, Connecticut in about July 2006 (photo)

GE 44 ton — 1 unit
380 horsepower; B-B trucks; 88,600 pounds operating weight

Road Number	First Number	Second Number	Builder Date	Builder Number	Notes
UPMW 03999	GE 1399	UP 1399	Feb 1947	28344	Renumbered to UPMW 903999 in December 1959.

General Note:

UPMW 03999 was built as GE demonstrator 1399, delivered to Union Pacific on 28 March 1947; sold to UP on 8 May 1947. UP 1399 was first assigned to yard switching duties in the Omaha area, then as shop switcher for Omaha Shops; then transferred to the maintenance of way department and renumbered to UPMW 03999 in October 1956; used at the maintenance of way equipment shop at Pocatello, Idaho, from October 1956 until 1972.

Baldwin-Westinghouse 50 ton Electric — 1 unit
400 horsepower; B-B trucks; 95,000 pounds operating weight

Road Number	First Number	Date To UP	Builder	Date Built	Builder Number	Notes
LA&SL E-100	G&M 22	May 1931	Baldwin-Westinghouse	Aug 1923	56397	1

General Notes:

a.	LA&SL E-100 was built new as Glendale & Montrose Railway 22 in 1923; G&M abandoned on December 30, 1930; locomotive sold to LA&SL in May 1931, numbered as E-100, for use on former G&M tracks between Delay Drive Siding and Glendale
b.	Electric service over former G&M tracks discontinued in 1940; the Glendale Branch was dieselized in July 1942 in one of the earliest uses of diesel switch locomotives on UP in California; LA&SL E-100 was sold UP subsidiary Yakima Valley Transportation Company
c.	LA&SL E-100 was equipped with 36-inch wheels; 60:17 gear ratio, and four Westinghouse Model 562-D5, 100 horsepower traction motors
d.	LA&SL E-100 was Baldwin-Westinghouse Class B-1
e.	LA&SL E-100 had Baldwin-Westinghouse order number 23577
f.	Reference: Signor, John. The Los Angeles and Salt Lake Railroad Company, Union Pacific's Historic Salt Lake Route, pages 107, 114

Notes:

1.	LA&SL E-100 was sold to UP-owned Yakima Valley Transportation Company 297, Yakima, Washington in March 1942, delivered to Yakima in September 1942; donated to Orange Empire Railway Museum, Perris, California in November 1985.

PE-Built 35 ton Electric — 1 unit
300 horsepower; B-B trucks; 70,000 pounds operating weight

Road Number	Previous Number	Date To UP	Builder	Date Built	Date Vacated	Notes
(LA&SL E-101)	G&M 21	May 1931	Pacific Electric, Los Angeles	1903	Sep 1936	1

General Notes:

a.	LA&SL E-101 was built as unmotored Pacific Electric flat car 3072; rebuilt in 1903 by Pacific Electric shops to motorized work motor 38; renumbered PE 1537 in 1911; sold Mar 1916 to Glendale & Montrose 21 in March 1916; changed by G&M from work flat to enclosed box motor
b.	UP purchased G&M (and both locomotives) in May 1931 after G&M was abandoned on December 30, 1930; locomotive assigned LA&SL E-101 but not renumbered; seldom used; by 1934 the locomotive was boarded up and out of service, stored in the former G&M yard in Glendale, California
c.	LA&SL E-101 was equipped with 33-inch wheels and four Westinghouse Model 76, 75-horsepower traction motors
d.	Locomotive history:

	Road Number	First Number	Second Number	Third Number	Fourth Number
	(LA&SL E-101)	PE 3072	PE 38	PE 1537	G&M 21

Notes:

1.	LA&SL E-101 was sold for scrap in September 1936 to Pennsyvania Iron & Steel Company, Los Angeles, California (some sources indicate that the former G&M 21 was burned by Pacific Electric at their Torrance Shops)

Maintenance of Way Locomotives — 9 units (narrow gauge)
Two-axle, four-wheel

Road Number	First Number	Type	Weight	Builder	Builder Model	Builder Date	Builder Number	Date Retired	Notes
UP-1		G-M	12 ton	Vulcan		Dec 1922	3273	1950	1
UP-2		G-M	12 ton	Vulcan		Dec 1922	3274	1936	2
UP-3		G-M	12 ton	Whitcomb	WHL	May 1929	12889	1950	3
UP-4		D-M	12 ton	Davenport	D-12	May 1931	2190	1938	4
UP-5		G-M	20 ton	Whitcomb	20GM-4	Oct 1936	13150		5

MW-1	MW-6	D-M	25 ton	Whitcomb	25DM-42A	Jun 1950	40693		6
MW-2	MW-8	D-E	25 ton	GE		Jun 1967	35916		7
MW-3	UP-5	G-M	20 ton	Whitcomb	20GM-4	Oct 1936	13150	1968	8
MW-4		D-M	24 ton	Whitcomb	20GM-9	Oct 1937	13162		9
MW-6		D-M	25 ton	Whitcomb	25DM-42A	Jun 1950	40693		10
MW-7		D-M	25 ton	Whitcomb	25DM-42A	Jun 1950	40694		11
MW-8		D-E	25 ton	GE		Jun 1967	35916		12

General Notes:

a.	G-M denotes Gas-Mechanical; D-M denotes Diesel-Mechanical; D-E denotes Diesel-Electric.
b.	Union Pacific used the term Roadway Service for all of its maintenance of way equipment and activities.
c.	UP-1 to UP-5 and MW-1 to MW-8 were 29-1/2 inch gauge and were used at UP's tie plants in Laramie, Wyoming and The Dalles, Oregon.

Notes:

1.	UP-1 was retired in 1950 under Work Order 6114; UP records show replaced by MW-1.
2.	UP-2 was retired in 1936 under Work Order 1278.
3.	UP-3 had 97 horsepower; retired in 1950 under Work Order 7947; UP records show replaced by MW-7.
4.	UP-4 was retired in 1938 under Work Order 5788; UP records show replaced by MW-4.
5.	UP-5 renumbered to MW-3.
6.	MW-1 had 190 horsepower; renumbered from MW-6; still in service during November 1978.
7.	MW-2 was renumbered from MW-8; still in service during November 1978; sold to Kerr McGee, number KM-2D.
8.	MW-3 renumbered from UP-5; retired 1968 under Work Order 31009.
9.	MW-4 had 147 horsepower; was still in service during November 1978.
10.	MW-6 had 190 horsepower; renumbered to MW-1.
11.	MW-7 had 190 horsepower; still in service, November 1978; sold to Kerr McGee, number KM-1D.
12.	MW-8 renumbered to MW-2.

Maintenance of Way Locomotive — 1 unit
Two-axle, four-wheel

Road Number	Previous Number	Date To UP	Type	Weight	Builder	Builder Model	Builder Date	Builder Number	Date Retired	Notes
(no number)	Boeing B-30	Nov 1971	D-M	30 ton	Whitcomb	30DM35A	Sep 1944	40288	24 Feb 1978	1

General Notes:

a.	G-M denotes Gas-Mechanical
b.	Union Pacific used the term Roadway Service for all of its maintenance of way equipment and activities.

Notes:

1.	(No MW Number) 140 horsepower; purchased second-hand from Boeing Aircraft Company in 1971; used briefly as shop switcher at North Platte; transferred to Roadway equipment shop in Pocatello, Idaho; removed from service in 1976; retired on 24 February 1978 and sold.

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