106 units by Juniata (plus 4 units by EMD Muncie)
Rebuilt From Rebuilt As Rbld Notes NS 7229 SD90MAC NS 7229 SD70ACU 8/16 4500 hp NS 7230 SD90MAC NS 7230 SD70ACU 10/17 NS 7231 SD90MAC NS 7231 SD70ACU 2/17 to PRLX 2/2021 NS 7232 SD90MAC NS 7232 SD70ACU 3/17 NS 7233 SD90MAC NS 7233 SD70ACU 2/17 4500 hp; to PRLX 2/2021 NS 7234 SD90MAC NS 7234 SD70ACU 10/16 4500 hp; to PRLX 2/2021 NS 7235 SD90MAC NS 7235 SD70ACU 6/16 NS 7236 SD90MAC NS 7236 SD70ACU 11/16 4500 hp NS 7237 SD90MAC NS 7237 SD70ACU 5/17 4500 hp NS 7238 SD90MAC NS 7238 SD70ACU 7/17 to PRLX 2/2021 NS 7239 SD90MAC NS 7239 SD70ACU 11/17 to PRLX 2/2021 NS 7240 SD90MAC NS 7240 SD70ACU 11/17 4500 hp NS 7241 SD90MAC NS 7241 SD70ACU 1/17 4500 hp; to PRLX 1/2022 NS 7242 SD90MAC NS 7242 SD70ACU 11/16 NS 7243 SD90MAC NS 7243 SD70ACU 9/16 4500 hp NS 7244 SD90MAC NS 7244 SD70ACU 10/16 to PRLX 2/2021 NS 7245 SD90MAC NS 7245 SD70ACU 6/16 NS 7246 SD90MAC NS 7246 SD70ACU 11/16 4500 hp NS 7247 SD90MAC NS 7247 SD70ACU 3/17 4500 hp NS 7248 SD90MAC NS 7248 SD70ACU 1/16 to PRLX 2/2021 NS 7249 SD90MAC NS 7249 SD70ACU 12/16 NS 7250 SD90MAC NS 7250 SD70ACU 4/16 to PRLX 2/2021 NS 7251 SD90MAC NS 7251 SD70ACU 10/17 to PRLX 1/2022 NS 7252 SD90MAC NS 7252 SD70ACU 6/16 NS 7253 SD90MAC NS 7253 SD70ACU 9/16 NS 7254 SD90MAC NS 7254 SD70ACU 2/17 Rebuilt and released by EMD Muncie 1/2017 then sent to Juniata for paint and testing NS 7255 SD90MAC NS 7255 SD70ACU 11/17 4500 hp; to PRLX 1/2022 NS 7256 SD90MAC NS 7256 SD70ACU 3/16 4500 hp; to PRLX 1/2022 NS 7257 SD90MAC NS 7257 SD70ACU 4/17 to PRLX 2/2021 NS 7258 SD90MAC NS 7258 SD70ACU 4/16 NS 7259 SD90MAC NS 7259 SD70ACU 8/16 to PRLX 1/2022 NS 7260 SD90MAC NS 7260 SD70ACU 6/17 4500 hp; to PRLX 1/2022 NS 7261 SD90MAC NS 7261 SD70ACU 7/16 to PRLX 2/2021 NS 7262 SD90MAC NS 7262 SD70ACU 6/16 to PRLX 2/2021 NS 7263 SD90MAC NS 7263 SD70ACU 2/16 4500 hp NS 7264 SD90MAC NS 7264 SD70ACU 2/16 4500 hp; to PRLX 2/2021 NS 7265 SD90MAC NS 7265 SD70ACU 5/16 4500 hp NS 7266 SD90MAC NS 7266 SD70ACU 6/17 NS 7267 SD90MAC NS 7267 SD70ACU 6/16 to PRLX 2/2021 NS 7268 SD90MAC NS 7268 SD70ACU 5/16 to PRLX 2/2021 NS 7269 SD90MAC NS 7269 SD70ACU 1/18 4500 hp NS 7270 SD90MAC NS 7270 SD70ACU 5/16 to PRLX 1/2022 NS 7271 SD90MAC NS 7271 SD70ACU 11/16 to PRLX 1/2022 NS 7272 SD90MAC NS 7272 SD70ACU 11/17 Rebuilt by EMD Muncie 4/2017 and sent to Juniata for paint and final testing; to PRLX 2/2021 NS 7273 SD90MAC NS 7273 SD70ACU 6/16 NS 7274 SD90MAC NS 7274 SD70ACU 8/16 to PRLX 2/2021 NS 7275 SD90MAC NS 7275 SD70ACU 6/17 to PRLX 2/2021 NS 7276 SD90MAC NS 7276 SD70ACU 3/16 to PRLX 1/2022 NS 7277 SD90MAC NS 7277 SD70ACU 10/16 to PRLX 1/2022 NS 7278 SD90MAC NS 7278 SD70ACU 11/17 Rebuilt by EMD Muncie 4/2017 and sent to Juniata for paint and final testing NS 7279 SD90MAC NS 7279 SD70ACU 8/16 to PRLX 2/2021 NS 7280 SD90MAC NS 7280 SD70ACU 6/17 to PRLX 1/2022 NS 7281 SD90MAC NS 7281 SD70ACU 6/17 NS 7282 SD90MAC NS 7282 SD70ACU 3/16 to PRLX 2/2021 NS 7283 SD90MAC NS 7283 SD70ACU 1/16 to PRLX 2/2021 NS 7284 SD90MAC NS 7284 SD70ACU 6/17 NS 7285 SD90MAC NS 7285 SD70ACU 2/17 Rebuilt and released by EMD Muncie 1/2017 then sent to Juniata for paint and testing; finally released to service 5/2017 NS 7286 SD90MAC NS 7286 SD70ACU 2/16 to PRLX 2/2021 NS 7287 SD90MAC NS 7287 SD70ACU 5/17 to PRLX 2/2021 NS 7288 SD90MAC NS 7288 SD70ACU 7/17 to PRLX 1/2022 NS 7289 SD90MAC NS 7289 SD70ACU 8/17 to PRLX 1/2022 NS 7290 SD90MAC NS 7290 SD70ACU 6/16 4500 hp; to PRLX 2/2021 NS 7291 SD90MAC NS 7291 SD70ACU 6/17 NS 7292 SD90MAC NS 7292 SD70ACU 5/16 to PRLX 2/2021 NS 7293 SD90MAC NS 7293 SD70ACU 7/16 to PRLX 2/2021 NS 7294 SD90MAC NS 7294 SD70ACU 5/16 to PRLX 2/2021 NS 7295 SD90MAC NS 7295 SD70ACU 8/17 NS 7296 SD90MAC NS 7296 SD70ACU 9/16 to PRLX 2/2021 NS 7297 SD90MAC NS 7297 SD70ACU 4/16 NS 7298 SD90MAC NS 7298 SD70ACU 8/16 to PRLX 2/2021 NS 7299 SD90MAC NS 7299 SD70ACU 3/18 First unit started in this program 9/2015; not released until 7/2018; to PRLX 1/2022 NS 7300 SD90MAC NS 7300 SD70ACU 6/17 NS 7301 SD90MAC NS 7301 SD70ACU 5/17 to PRLX 2/2021 NS 7302 SD90MAC NS 7302 SD70ACU 3/17 NS 7303 SD90MAC NS 7303 SD70ACU 3/17 NS 7304 SD90MAC NS 7304 SD70ACU 1/17 NS 7305 SD90MAC NS 7305 SD70ACU 5/16 to PRLX 2/2021 NS 7306 SD90MAC NS 7306 SD70ACU 12/16 to PRLX 2/2021 NS 7307 SD90MAC NS 7307 SD70ACU 5/17 to PRLX 2/2021 NS 7308 SD90MAC NS 7308 SD70ACU 12/16 to PRLX 2/2021 NS 7309 SD90MAC NS 7309 SD70ACU 8/16 NS 7310 SD90MAC NS 7310 SD70ACU 10/17 to PRLX 2/2021 NS 7311 SD90MAC NS 7311 SD70ACU 3/17 to PRLX 2/2021 NS 7312 SD90MAC NS 7312 SD70ACU 12/16 NS 7313 SD90MAC NS 7313 SD70ACU 8/17 to PRLX 2/2021 NS 7314 SD90MAC NS 7314 SD70ACU 9/16 Renumbered NS 7339 in 10/2018 NS 7315 SD90MAC NS 7315 SD70ACU 10/17 to PRLX 2/2021 NS 7316 SD90MAC NS 7316 SD70ACU 10/16 to PRLX 2/2021 NS 7317 SD90MAC NS 7317 SD70ACU 1/17 to PRLX 2/2021 NS 7318 SD90MAC NS 7318 SD70ACU 2/17 to PRLX 2/2021 UP 8247 SD90MAC NS 7319 SD70ACU 2/16 was slated to become NS 7329 but never was patched as such, marked as 7329 before strip-down with spray paint; re-marked 7319 after being stripped down; to PRLX 2/2021 NS 7320 SD90MAC NS 7320 SD70ACU 4/16 to PRLX 2/2021 NS 7321 SD90MAC NS 7321 SD70ACU 3/17 to PRLX 2/2021 NS 7322 SD90MAC NS 7322 SD70ACU 1/17 NS 7323 SD90MAC NS 7323 SD70ACU 8/17 to PRLX 2/2021 NS 7324 SD90MAC NS 7324 SD70ACU 4/16 to PRLX 1/2022 NS 7325 SD90MAC NS 7325 SD70ACU 8/17 to PRLX 1/2022 NS 7326 SD90MAC NS 7326 SD70ACU 10/16 to PRLX 1/2022 NS 7327 SD90MAC NS 7327 SD70ACU 4/16 to PRLX 1/2022 NS 7328 SD90MAC NS 7328 SD70ACU 2/17 to PRLX 2/2021 -------------------------------------------------------- NS 7329 SD90MAC NS 7329 SD70ACU 10/18 Originally CEFX 104 NS 7330 SD90MAC NS 7330 SD70ACU 3/19 Originally CEFX 105; to PRLX 1/2022 NS 7331 SD90MAC NS 7331 SD70ACU 2/19 Originally CEFX 118; to PRLX 1/2022 NS 7332 SD90MAC NS 7332 SD70ACU 4/19 Originally CEFX 120; last unit of series to enter service in 5/2019 NS 7333 SD90MAC NS 7333 SD70ACU 9/18 Originally CEFX 121 INRD 9002 SD90MAC NS 7334 SD70ACU 3/19 Originally CEFX 124, then to INRD 9002, never was patch-renumbered as NS 7334 (stored until rebuilt) NS 7335 SD90MAC NS 7335 SD70ACU 12/18 Originally CEFX 125 NS 7336 SD90MAC NS 7336 SD70ACU 12/18 Originally CEFX 126, then to INRD 9003 NS 7337 SD90MAC NS 7337 SD70ACU 8/18 Originally CEFX 135, then to INRD 9008 NS 7338 SD90MAC NS 7338 SD70ACU 4/19 Originally CEFX 138, then to INRD 9006 Work Done: - Old cab replaced with EMD isolated SD70ACe cab with completely new wiring and electronics - ICE (Integrated Cab Electronics) displays replaced with FIRE (Functional Integrated Railroad Electronics) displays with new EM2000 to replace old EM2000 - EPIC air brake replaced with CCB2 - Siemens inverters replaced with Mitsubishi inverters - Ultra Cab II installed with Conrail cab signals and LSL (some units already had this changeover) - Rear ditch lights installed and pneumatic bell replaced with electronic bell - Engine work done as-needed with some being upgraded from Tier 0+ to Tier 1+ emissions; some units tuned up to 4500 hp (those known to be 4500 hp are noted above) - Truck work done as-needed but original Siemens traction motors remain - Ballasted up to 432,000 lbs (first 34 rebuilds were released as 420,000 lbs, but will be increased as they go back into the shop) Notes: - While on Union Pacific, these units were designationed SD9043AC by UP while EMD referred to them as SD90MAC. NS chose to use the EMD designation. - These units equipped with Conrail cab signals before SD70ACU upgrade: 7235, 7238, 7239, 7240, 7243, 7245, 7247, 7254, 7255, 7257, 7264, 7266, 7271, 7274, 7277, 7278, 7284, 7288, 7291, 7292, 7298, 7300, 7305, 7307, 7311, 7312, 7322, 7327, 7328 - Several units were sent to EMD Muncie for rebuilding but only four units ended up getting rebuilt there as noted above. - 2/2021, 40-some 'problem units' sold to Progress Rail. - 1/2022, 20 more 'problem units' traded to Progress Rail for ten SD70ACe units built in 2019.
| SD90 Comparison | ||||
|---|---|---|---|---|
| Model | Engine | Main Alt. | Inverters | Traction Motors |
| SD90MAC-H (6000 hp) | 16V265H | TA22 | Siemens | 1TB2830 |
| SD90MAC (4300 hp) | 16-710G3B | TA22 | Siemens | 1TB2830 |
| SD70ACU (4300/4500 hp) | 16-710G3B | TA22 | Mitsubishi | 1TB2830 |
| SD70ACe (4300 hp) | 16-710G3C | TA17 | Mitsubishi | A3432 |
| As you can see, little has been changed mechanically with these rebuilds. They have not been derated as they've always been 4300 hp since built. | ||||
| EMD | UP | CP | NS | Railfan | |
|---|---|---|---|---|---|
| 6000hp 90MAC | SD90MAC-H | SD90AC | SD90MAC | n/a | |
| 4300hp 90MAC | SD90MAC | SD9043AC | SD9043AC | SD90MAC | SD9043MAC |
Copyright © 2015-2022 L.R. Myers. All rights reserved.