Figure 2-8.—Engine turning locations for borescope inspections.Detailed procedures are provided for indexing andreference point for distress reporting for each stage. Yourotating the engine on the MRC. Figures 2-9 and 2-10should not concentrate on counting the blades. Instead,show the accessory drive gear ratios and the locking lugsconcentrate on the specific condition of each airfoil asused for indexing the compressor rotor. Zero referenceit passes. The forward and aft drive pads have differentfor the compressor and HP turbine stages is establisheddrive ratios to the main rotor shaft. You may find itby use of the locking lug blades. Establishing the zeroadvantageous to use a torque multiplier to slow downreference ensures a complete inspection for each stage.and maintain better control over the main rotor speed.It also provides you an immediate circumferentialDepending on the manual drive setup, you will be able2-8
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