TM 10-4320-307-243-7 FLEXIBLE COUPLING INSPECT/ALIGN/REPAIR/REPLACE (CONT).NOTESee calculation method on AlignmentRecord Lateral Readingg. Check that readings do not exceed maximumcoupling manufacturers tolerances.Amax = ± 2.5 mm (0.098 inch)Xmax = 1.56 mm (0.061 inch)Lmax = 1.2 mm (0.047 inch)NOTEExample 1 is an entry of A = 0.035 inch(36% o 0.098), L = 0.007 inch (14% of0.047) and X = 0.020 inch (0.52 mm). Anypoint on the graph indicates an acceptablefield alignment check. the smaller angularerror (X = 0.13 mm or 0.005 inch) inExample 2 allows a greater misalignment inboth A (1.48 mm or 0.058 inch) and L (0.34mm or 0.013 inch). Both Examples 1 and 2indicate acceptable conditions not requiringengine realignment. Smaller X, L, or A thanany point read from the graph is alsoacceptable. If the correlated misalignmentvalues do not fall within the limits indicated,realignment of the engine is required.Proceed to step 3.3-16
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