(drawing copyright Shane Stewart )

CN ALCo/MLW locomotives

Montreal Locomotive Works (MLW) was founded in 1902 and was owned by the American Locomotive Company (ALCo). In the mid 1940s MLW was a well known builder of steam locomotives but as railroads began to switch from steam to diesel power the company followed the trend.

In 1949 MLW began to build ALCo locomotives under licence. Initially the diesels were very similar in appearance to the American built locomotives with the louvres in the upper part of the engine access doors and the air-filters inside the carbody. Soon though these were superseded by the characteristic exterior square car body filters. MLW also redesigned the road switcher carbody and the angular recessed number boards of the American locomotives were replaced by flat number boards on front and rear as seen on the Canadian-built RS10s and RS18s.

In the late '60s after ALCo had been purchased by the Worthington Corporation, MLW became MLW-Worthington. In 1969 they purchased the engineering designs and world licences for the ALCo products.

In 1975 Bombardier purchased the majority interest in MLW- Worthington. In addition to designing the LRC passenger train (Light, rapid and comfortable) powered by 3,750 hp locomotives, they introduced an updated series of freight locomotives called the Highly Reliable (HR) series. In the model number the first digit (4 or 6) designates the number of axles on the locomotive and the second and third digits the number of cylinders in the engine. This gives the models HR412 and HR616 and these used similar engines to those in earlier models. The HR412 carbody was similar to that of the M420 but the HR616 had a new full width carbody and newly designed controls featuring many lighted rotary switches.

These HR locomotives were only purchased by CN and were scrapped or sold at about the same time as the M420s and C630M/M636s that they were designed to replace.

Finally Bombardier discontinued locomotive manufacture in Canada although they still own a global manufacturing business for rail-transportation. In 1988 they sold the Montreal works to General Electric(Canada) who briefly used them to rebuild locomotives into the Super 7 series. GE closed the MLW plant at the end of 1993.

CN MLW locomotives fall into four groups:

Type photos

Type photos and details on different physical differences between models are found here. Also see the switchers and road switchers sections.

Index

100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 117 119

300 301 302 303 304 305 306 307 308 309

1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043

2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119

2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339

2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579

3150 3151 3152 3153 3154 3155

3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240

3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3527 3528 3529 3530 3531 3532 3533 3534 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589

3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893

8500 8501 8502 8503 8504 8505 8506 8507 8508 8509 8510 8511 8512 8513 8514 8515 8516 8517 8518 8519 8520 8521 8522

8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610 8611 8612 8613 8614 8615 8616 8617 8618 8619 8620 8621 8622 8623 8624 8625

8700 8701 8702 8703 8704 8705 8706 8707 8708 8709 8710 8711

Locomotive histories

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