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503 and another 500 unit take PORI through Royal Junction in Falmouth on April 15th of 2005.
Photo by John Erickson.
503 and another 500 unit take PORI through Royal Junction in Falmouth on April 15th of 2005.
Photo by John Erickson.
MEC 510, EDRU at Royal Junction on May 30th, 2007.
Photo by John Erickson.
MEC 510, EDRU at Royal Junction on May 30th, 2007.
Photo by John Erickson.
503 and 505 arrive with NMED at Danville on April 10, 2008.
Photo by John Erickson.
503 and 505 arrive with NMED at Danville on April 10, 2008.
Photo by John Erickson.
503 and 505 arrive with NMED at Danville on April 10, 2008.
Photo by John Erickson.
503 and 505 arrive with NMED at Danville on April 10, 2008.
Photo by John Erickson.
503 and 320 and a light EDRU on October 29, 2009.
Photo by John Erickson.
503 and 320 and a light EDRU on October 29, 2009.
Photo by John Erickson.
MEC 503 canned at Cooks in Scarborough on April 21, 2010.
Photo by John Erickson.
MEC 503 canned at Cooks in Scarborough on April 21, 2010.
Photo by John Erickson.
B&M 330, Mec 509, MEC 503 & MEC 516 work a DJ-Extra at Danville on the 26th of January 2013.
Photo by John Erickson.
B&M 330, Mec 509, MEC 503 & MEC 516 work a DJ-Extra at Danville on the 26th of January 2013.
Photo by John Erickson.
MEC 503 & 343 lead PORU through Danville in Auburn on August 5th of 2015.
Photo by John Erickson.
MEC 503 & 343 lead PORU through Danville in Auburn on August 5th of 2015.
Photo by John Erickson.
MEC 503, & 380 lead PORU through Danville on November 23rd of 2018.
Photo by John Erickson.
MEC 503, & 380 lead PORU through Danville on November 23rd of 2018.
Photo by John Erickson.
MEC 503, 380 & another 500s unit lead PORU through Danville on November 23rd of 2018.
Photo by John Erickson.
MEC 503, 380 & another 500s unit lead PORU through Danville on November 23rd of 2018.
Photo by John Erickson.
RI-1 with MEC engine 503 on the east end of Rileys Yard in Jay on June 13th of 2020.
Photo by John Erickson.
RI-1 with MEC engine 503 on the east end of Rileys Yard in Jay on June 13th of 2020.
Photo by John Erickson.
MEC 307, 509, 511, & 503, RUPO disconected from the train and taking on water at Danville on March 25th of 2022.
Photo by John Erickson.
MEC 307, 509, 511, & 503, RUPO disconected from the train and taking on water at Danville on March 25th of 2022.
Photo by John Erickson.
MEC 503 at Danville Junction on June 30th of 2023.
Photo by John Erickson.
MEC 503 at Danville Junction on June 30th of 2023.
Photo by John Erickson.
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MEC 503, & MEC 517 haul PORI up hill at Gray on April 15, 2005.
Video by John Erickson.
MEC 519 leads 518, 503 and 343 with POWA through Green on July 22nd of 2015.
Video by John Erickson.
MEC 510 takes RUPO westbound by Merril Rd, Lewiston on December 29th of 2018.
Video by John Erickson.
B&M 330 MEC 511 & MEC 503 haul PORU out of the siding at Blake on March 12th of 2020.
Video by John Erickson.
MEC 307, 509, 511, & 503 backing up to their train, RUPO, at Danvill on March 25th of 2022.
Video by John Erickson.
MEC 307, 509, 511, & 503 lead RUPO at Allied on March 25th of 2022.
Video by John Erickson.
| Number | Marks | Current Disposition | Eng. Serial No. | Eng. Built: | Date Acquired: |
|---|---|---|---|---|---|
| 503 | MEC | Active | A3036 | 3/1974 | 1990s |
| Eng. Type: | Engine Maker: | Trucks: | Horsepower: | Weight: | Engine: |
| GP40-2 | EMD | HTB 4-Wheel | 3000 | 250,000 lbs | 645E3C 16 cylinder |
| Bore & Stroke: | Fuel Capacity: | Truck Wheel Base: | Tractive Effort (starting): | Gear Ratio: | Speed: |
| 9.08" X 10" | 1700 | 9'-00" | 61,000 lbs @25% | 62:15 | 65 mph |
All diesel engine data is usually from The Diesel Shop with inclusions from Wikipedia where the information on The Diesel Shop was spotty. Former Maine Central Locomotives are checked against Maine Central Diesel Locomotives Revised Edition by Edwin B. Robertson.