| MLW M-636 | |
| Powertype: | Diesel-electric |
| Builder: | Montreal Locomotive Works, AE Goodwin, Auburn, NSW (licensee), Comeng, Granville, NSW/Bassendean, WA (licensee) |
| Buildmodel: | M-636 |
| Builddate: | September 1969 - February 1980 |
| Totalproduction: | 185 |
| Aarwheels: | C-C |
| Uicclass: | Co′Co′ |
| Trucks: | Dofasco ZWT-3 Hi-Ad, ALCo Hi-Ad |
| Wheeldiameter: | 40inches |
| Length: | 69feet |
| Width: | 10feet |
| Height: | 15feet (cab roof) |
| Fueltype: | Diesel |
| Primemover: | Alco 16-251F |
| Rpmrange: | 300-1,100 |
| Enginetype: | V16 diesel engine |
| Cylindercount: | 16 |
| Aspiration: | Turbocharged |
| Alternator: | GE GTA11 |
| Tractionmotors: | GE 752 |
| Trainbrakes: | 26L |
| Poweroutput: | 3600abbr=onNaNabbr=on |
The M-636 is a six-axle, 3,600 hp diesel locomotive marketed as part of the Montreal Locomotive Works six-axle "M-Line" series of locomotives. It was an evolution of the ALCo C636, and it saw many sales to Canadian, Mexican and Australian customers. Today, there are a handful M-636s left in revenue service.
| Units built by Montreal Locomotive Works[1] | |||||
|---|---|---|---|---|---|
| Railroad | Quantity | Road numbers | Notes | ||
| Canadian National Railway | 40 | 2300–2339 | Units were ordered without dynamic brakes. | ||
| Canadian Pacific Railway | 44 | 4700–4743 | |||
| Quebec Cartier Mining | 11 | 71-76, 81-85 | |||
| Ferrocarril del Pacífico | 16 | 651-666 | |||
| Units built by AE Goodwin[2] [3] [4] | |||||
| Railroad | Quantity | Road numbers | Notes | ||
| Cliffs Robe River Iron Associates | 7 | 9410–9416 | |||
| Hamersley Iron | 19 | 4030-4048 | |||
| Mount Newman Mining | 16 | 5469–5484 | All were built with ALCo Hi-Ad trucks. | ||
| Units built by Commonwealth Engineering | |||||
| Railroad | Quantity | Road numbers | Notes | ||
| Cliffs Robe River Iron Associates | 3 | 9421–9423 | 9423 was the last M636 built in February 1980. | ||
| Hamersley Iron | 8 | 4049-4056 | |||
| Mount Newman Mining | 21 | 5485–5505 | 5485-5495 were built with ALCo Hi-Ad trucks. 5496 and up were built with the standard Dofasco ZWT-3 Hi-Ad trucks. | ||
| Total | 185 | ||||