567D engine maintenance These two models are by far the most maintainable, with many 645 service parts being rather easily fitted to C and D engines. The 567D's turbocharger is perhaps the least maintainable part of such an engine, and the 567D turbo has many more maintenance issues than 645E and later turbos. A common choice is conversion of a 567D turbo engine to Roots-blown, thereby abandoning the turbo and its many issues. Installation of 645 power assemblies will still allow Roots-converted 4-axle locomotives (GP20s) to produce , as does a Roots-blown 16-645E, thereby becoming the functional equivalent of a GP38, although with older electrical equipment and controls, and, of course, the older carbody. Many EMD locomotives with C and D engines are still operating, particularly as their relatively light weight (about ) is of significant benefit to shortline and industrial operators. See also EMD 645 EMD 710 EMD 1010 Notes References Bibliography Service Department (1954?). The Complete Line of General Motors Diesel Locomotives. La Grange, IL: Electro-Motive Division of General Motors Corporation External links Diesel locomotive engines Marine diesel engines Two-stroke diesel engines V6 engines V8 engines V12 engines V16 engines