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GE Dash 9-40C Diesel-Electric Locomotive
The GE Dash 9-40C, also called a C40-9, was a 4,000-horsepower (3,000 kW) road switcher diesel locomotive that was built by GE Transportation Systems of Erie, Pennsylvania, between January 1995 and March 1995. The C40-9 was equipped with the 16-cylinder 7FDL-16 prime mover which is rated at a lower power than the 4,400 hp (3,300 kW) GE Dash 9-44CW that debuted a year earlier in 1994. It featured GE's direct current B13B traction motors.

The C40-9 featured the standard cab design and was the only model in the Dash-9 series to do so. It is essentially identical to the wide-cab C40-9W model otherwise. All units had rooftop-mounted air conditioner units which gave them their distinct "top hat" look.

Norfolk Southern Railway (NS) was the only operator of this model. The company owns 125 units, numbered 8764–8888.NS specifically requested the standard cab and may have purchased more units had the Federal Railroad Administration not required it to purchase the wide-cab C40-9W version instead.

Upgrade
In mid 2015, NS started to upgrade its C40-9s into 4400 hp. C44-9s by upgrading the wattage to 3,281 kW, up from the as-delivered 3,000 kW. The units are being upgraded as they go in for their 184-day maintenance cycle.

Also in 2015, NS 8879 became first NS GE Dash 9-40C to be converted from DC to AC traction. The locomotive was rebuilt with a new GE wide nose and cab, and had locomotive speed limiter (LSL) and cab signals installed. These traction motor replacements are part of a Norfolk Southern / General Electric project to test the economic feasibility of converting Norfolk Southern's large (125 units), but relatively old Dash 9 fleet to AC traction. (BNSF Railway is also considering a similar upgrade program for its even bigger - originally 1,797 units - C44-9W fleet). Work on the 8879 was sub-contracted out to and completed by American Motive Power, Inc. (AMP) in Dansville, New York. Two more units were soon added to the conversion program, NS C40-9 8799 and NS C40-9W 8900. Norfolk Southern's units will be called AC44C6M.

As of November 2018 all have been retired and are to be rebuilt by 2019.

GE Dash 9-40C Overview
Type and origin
Power type: Diesel-electric
Builder: GE Transportation Systems
Model: GE Dash 9-40C
Build date: January–April 1995
Total produced: 125
Specifications
Configuration:
​ • AAR: C-C
Gauge: 4 ft 8 1⁄2 in (1,435 mm)
Trucks: GE HiAd
Wheel diameter: 40 in (1,000 mm)
Wheelbase: 13 ft 7 in (4.14 m)
Length: 73 ft 2 in (22.30 m)
Locomotive weight: 410,000 lb (190 t), full supplies - (fuel oil, lube oil, sand).
Fuel capacity: 4,600 US gal (17 kL)
Lubricant capacity: 410 US gal (1.6 kL)
Sandbox capacity: 40 cu ft (1.1 m3)
Prime mover: GE 7FDL-16
Traction motors: direct-current GE B13B
Performance figures
Maximum speed: 70 mph (110 km/h)
Power output: 4,000 hp (3,000 kW)
Tractive effort: 109,000 lbf (480 kN) (continuous)
Tractive effort: 140,000 lbf (620 kN) (starting)
Career
Locale: United States
Current owner: Norfolk Southern Railway
Disposition: All retired and rebuilt as AC44C6M

See also:

Norfolk Southern Railway

GE Transportation

GE Diesel-Electric Locomotives

Norfolk Southern 8801 heads a long grain train at Marion, Ohio, September 1, 2007. 

By John Mueller - originally posted to Flickr as Marion, OH 090107, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=3913376

Norfolk Southern 8801 heads a long grain train at Marion, Ohio, September 1, 2007.

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