TM 5-3805-260-24Bore Runout (radial eccentricity) of the FlywheelHousing1.With the dial indicator in position at (C), adjustthe dial indicator to .000 in. Push crankshaft upagainst the top bearing. Write the measurementfor bearing clearance on Iine 1 in column (C).2.Divide the measurement from Step I by 2. Writethis number on line I in columns (B) & (D)3.Turn the crankshaft to put the dial indicator at(A). Adjust the dial indicator to .000 in4.Turn the crankshaft counterclockwise to put thedial indicator at (B). Write down themeasurement in the chart.8S2328 DIAL INDICATOR GROUP INSTALLEDNOTE: Write the dial indicator measurements with theirpositive(+) and negative(-) notation (signs). This isnecessary for making the calculations in the chartcorrectly5.Turn the crankshaft counterclockwise to put thedial indicator at (C). Write the measurement inthe chart.6.Turn the crankshaft counterclockwise to put thedial indicator at (D). Write the measurement inthe chart.7.Add lines I & 11 by columns.8.Subtract the smaller number from the largernumber in line III in columns (B) & (D). Theresult is the horizontal "eccentricity" (out ofround). Line II, column (C) is the verticaleccentricity.9.On the graph for total eccentricity find the pointof intersection of the lines for vertical eccentricityand horizontal eccentricity.10. If the point of intersection is in the range marked"Acceptable" the bore is in alignment If the pointof intersection is in the range marked "NotAcceptable" the flywheel housing must bechanged.2-74
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