The MLW M-420 was a diesel-electric locomotive manufactured between 1973 and 1977 in Montreal, Canada by the Montreal Locomotive Works. A total of 88 units were built for Canadian railways, including eight B units built for the British Columbia Railway; most of production went to Canadian National. [2] .

The Montreal Locomotive Works (MLW) M420 is a 2,000 horsepower, four axle road switcher locomotive, purchased by Canadian National, BC Rail, and Providence & Worcester. The locomotive remains in service today on various short-line railroads throughout North America.

The MLW M-420 was a diesel-electric locomotive manufactured between 1973 and 1977 in Montreal, Canada by the Montreal Locomotive Works. A total of 88 units were built for Canadian railways, including eight B units built for the British Columbia Railway; most of production went to Canadian National.

2024年8月13日 · The M420 was essentially MLW's version of the C420 with a B-B trucks. The locomotive measures approximately 61 feet in length and weighed, on average, 272,000 pounds. One of the key innovations of the M420 was the use of a wide cab, often called a “comfort cab.”

Canadian National 3502 was an MLW M-420W diesel-electric locomotive that was owned and operated by the Canadian National Railway (CN) and which became famous when it served as an emergency generator for the city of Boucherville, Quebec, during a severe snowstorm in 1998.

The M420 was equipped with the ALCO 12V-251c3 prime mover producing 2000 H.P. Most M420 units rode on MLW ZWT (Zero Weight- Transfer) trucks. The only exception to this were the 5 units built for the Providence & Worcester, which rode on ALCO trade-in FA trucks.

5 天之前 · What is the difference between a M420 and an M420R? Thanks! The M420 R has rebuilt RS-3 trucks under it. They were only built for the P&W. There is a few minor external differences as well. Not here. You can go to http://www.srnjrr.com and go to the roster section to see pictures of both.

The M-420s were among the last of CN’s MLW-built locomotives to be retired. While numerous units were cannibalized and scrapped in Moncton NB during 1997 approximately half of the fleet was sold serviceable in early 1998. After being sold by CN many M-420s found new homes on shortlines in both Canada and the United States.

MLW constructed 103 M420s between May 1973 and February 1977 for four railways including CN (80), BCR (16 including eight B units), Ferrocarriles del Estado (2), Providence & Worcester (5). CN would take delivery of the M420s in 3 groups: MR-20a class 2500-2529 (delivered 1973), MR-20b class 2530- 2559 (delivered 1974), and MR-20c class 2560 ...

Unit # Notes Model Serial # Pictures : CN 2501: CN class MR-20a: M420W 6071-02: 1: 259130: CN 2504: re# 3504 in 1986-87: M420W 6071-05: 1