Figure 2-9.—Accessory drive gear ratios.to establish how many full arcs of the ratchet wrench arerequired to move the main rotor one full revolution. Forexample, when you are using the forward pad, a344-degree revolution of the input drive equals 360degrees on the main rotor.SERVICE LIMITSThis section discusses the types of damage that youmight find when conducting a routine inspection. Thismaterial will be limited to a discussion of the majorengine areas. The parts nomenclature that is used in thissection is found in figure 2-11, a foldout at the end ofthis chapter.Compressor SectionYou should inspect the compressor section for nicksand dents, cracks, spacer rubs, casing rubs, blade tiprubs, bent edges, missing pieces, and trailing edgeerosion. Inspect the first-stage compressor midspandamper for leading edge dents and other types of2-9
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