Spotting Features
The GP40-2 car body retains the high spartan lines of other EMD locomotives of the same era, with a beveled nose and an angular, slant-roof cab. There are three large radiator fans at the rear of the hood and a single fan in the middle for the dynamic brakes (if equipped). The radiator intakes are smaller than those of the later GP50, and the walkways lack the end "porches" of the 6-axle SD40-2.
The GP40-2 can be distinguished from the earlier GP40 by the oval-shaped water-level sight glass at the right rear of the long hood; bolted (rather than hinged) battery boxes ahead of the cab; lengthened walkway blower duct; and various minor cosmetic differences in the front air intake and rear hood doors. A number of GP40-2s also came with the new Blomberg M-type trucks, with single-clasp brakes, rubber pads replacing the central leaf springs and a shock strut over each axle.
Read more about this topic: EMD GP40-2
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