| EMD G22C Series | |
| Powertype: | Diesel-electric |
| Gauge: | or |
| Builder: | Astarsa, Equipamentos Villares S.A., Electro-Motive Division, General Motors Diesel, Henschel & Sohn GmbH, MACOSA |
| Buildmodel: | G22CW, G22CU, G22CU-2, GL22C, GL22C-2, GL22MC |
| Builddate: | February 1969 - August 2001 |
| Totalproduction: | 410 |
| Aarwheels: | C–C |
| Uicclass: | Co′–Co′ |
| Driverdiameter: | 400NaN0 |
| Wheelbase: | 11feet between bolsters; 6feet between axles in each truck |
| Length: | 46feet over the coupler pulling faces |
| Width: | 9feet over the grabirons |
| Height: | 12feet |
| Locoweight: | 84t |
| Fuelcap: | 1700- |
| Primemover: | EMD 12-645E |
| Aspiration: | Roots blower |
| Cylindercount: | V12 |
| Poweroutput: | 1500- |
| Maxspeed: | 65- |
| Nicknames: | "Pup” |
| Locale: | Argentina, Brazil, Sri Lanka, Guinea, Liberia, Morocco, Mali, Nigeria, Pakistan, Peru, Senegal, Taiwan |
The EMD G22C Series were first introduced in 1968 to replace the popular G12 along with various improvements. They carried a low per axle weight on their Flexicoil Type-GC trucks and were the first model series to have a low nose as a standard option as well.
The G22 series now carried a U or W suffix after the model designation to indicate the type of traction motors. A C indicated six-axle C trucks, while a 4 indicated six-axle A1A trucks (only four of them powered); although there never has been an indication of A1A trucks until 1993.
The designations could apply to any kind of export locomotive design of EMD or another licensee of EMD as long as the electrical & mechanical gear was left unaltered.
With the introduction of the 645 engine for export models in 1967, the model designation numbers changed by adding 10. To meet customer demands of a six axle version of the popular G12, EMD created the GR12 which was slightly longer and taller to accommodate the six axle Type-GC trucks.
Although the orders lacked for the GR12 due to the weight and size of the locomotive, EMD revised and designed the lighter G22 series model to accommodate the Flexicoil Type-C truck and introducing the new EMD 645 series engine. With relocation of the batteries within the carbody and increasing the fuel tank capacity, the G22C series was the same length to that of its four axle counterpart, the G22. Production spanned longer than the four axle G22 version, but with smaller orders.
Several models were introduced:
The EMD G22CW was first introduced in 1969. Unlike its predecessor GR12, the G22CW now carried a CW suffix which indicated that this model had six axles (C) and traction motors that could fit from standard gauge rails to gauge rails (W).
The G22CW found most of its popularity in Argentina and Sri Lanka, as the largest order were each placed by them with 15 units.
Production spanned from July 1976 to November 1990
| GM G22CW orders | ||||||
|---|---|---|---|---|---|---|
| Builder | Country | Railroad | Quantity | Road numbers | Notes | |
| EVSA | Peru | Centromin | 1 | 39 | The only G22C built by Equipamentos Villares S.A. | |
| EMD | Peru | Cerro de Pasco | 1 | 38 | The First G22CW built | |
| ASTARSA | Argentina | Ferrocarriles Argentinos | 40 | 7901 – 7940 | ||
| Thyssen Henschel | Sri Lanka | Sri Lanka Railways | 16 | 783 – 798 | Imported to Sri Lanka in 1979. Still in operation. | |
See main article: EMD G22CU. The EMD G22CU first appeared in 1969. Designed mainly for the narrow gauge market, the G22CU now carried a CU suffix which indicated that this model had six axles (C) and traction motors that could fit from one meter gauge to 5 ft 6 in gauge rails (U).
The G22CU found most of its popularity in Pakistan, as older locomotives were being replaced.
Production spanned from February 1969 to June 1982.
| EMD G22CU Orders | ||||||
|---|---|---|---|---|---|---|
| Builder | Country | Railroad | Quantity | Road Numbers | Notes | |
| EMD | Chile | Ferrocarril de Antofagasta a Bolivia | 2 | 1410 – 1411 |
| |
| EMD | Mali | Chemin de Fer du Mali | 2 | CC1671 – CC1672 | 1 meter gauge | |
| EMD & ASTARSA | Argentina | Ferrocarriles Argentinos | 96 | 7701 – 7796 | Assigned to Ferrocarril General Belgrano; 7701 – 7720 built by General Motors, 7721 – 7796 built by ASTARSA | |
| EMD | Liberia | National Iron Ore Co. Ltd. | 2 | 28 – 29 | ||
| EMD & GMD | Pakistan | Pakistan Railways | 62 | 4801 – 4832, 4901 – 4930 | 4801 – 4832 built by EMD, 4901 – 4930 built by GMD | |
| EMD | Taiwan | Taiwan Railway Administration | 25 | R151 – R175 | ||
| MACOSA | Brazil | Viação Férrea do Rio Grande do Sul (RFFSA) | 24 | 6201 – 6224 | Built during the Brazilian Miracle era | |
Beginning on January 1, 1972, export locomotives now had the option to carry EMD Dash 2 electronics, adding the (-2) suffix to the locomotive model. Only Argentina and Taiwan purchased the G22CU-2.
Production spanned from March 1992 to August 2001
| EMD G22CU-2 Orders | ||||||
|---|---|---|---|---|---|---|
| Builder | Country | Railroad | Quantity | Road Numbers | Notes | |
| EMD | Argentina | Belgrano Sur Line | 5 | MF701 – MF705 | ||
| EMD | Taiwan | Taiwan Cement | 6 | R191 – R196 | ||
| EMD | Taiwan | Taiwan Railway Administration | 10 | R181 – R190 | ||
When most second and third world railroads couldn't operate standard EMD Locomotives due to their weight, EMD introduced the L suffix which indicated the locomotive had a lightweight frame. The locomotive designation was now changed to GL22C. However, as these locomotives had a much lighter frame, the application of the U or W suffixes no longer applied.
Production spanned from December 1971 to May 1977
| EMD GL22C Orders | ||||||
|---|---|---|---|---|---|---|
| Builder | Country | Railroad | Quantity | Road Numbers | Notes | |
| Henschel & Son | Mali | Chemin de Fer du Mali | 2 | CC1681 – CC1682 | ||
| EMD | Nigeria | Nigerian Railway Corporation | 30 | 1126 – 1155 | ||
| EMD | Guinea | Office National du Chemin de Fer de Guinée | 2 | CC1601 – CC1602 | ||
| Henschel & Son | Senegal | Régie des Chemins de Fer du Senegal | 2 | CC1701 – CC1703 | ||
| EMD | Morocco | Société Ferrite de Rif | 2 | 1 – 2 | ||
Being the rarest of the G22C series, the GL22C-2 model combined a lightweight frame and the new EMD Dash 2 electronics.
Production was only for Queensland Rail, who were the sole purchaser.
| EMD GL22C-2 Orders | ||||||
|---|---|---|---|---|---|---|
| Builder | Country | Railroad | Quantity | Road Numbers | Notes | |
| Clyde Engineering | Australia | Queensland Rail | 24 | 2400 – 2423 | 2400 class | |
| Clyde Engineering | Australia | Queensland Rail | 18 | 2450 – 2467 | 2450 class | |
| Clyde Engineering | Australia | Queensland Rail | 38 | 2470 – 2507 | 2470 class | |
Only two general variations have been noticed during the G22C production.
Phase 1: Larger frame sill, air reservoir slung under skirting.
Phase 2: Smaller frame sill, air reservoir exposed, and two horizontal bars along intake grilles.
There have been various as-modifications on railroads as well, but are excluded due to various degrees of completion on the modification.
The G22CU/G22CW model is represented in HO scale by Frateschi. Due to the accommodation of the motor, the model is not entirely accurate.