RING-THRUST 6Y2933 - Caterpillar

1. With the dial indicator in position at (C), adjust the dial indicator to "0" (zero). Push the crankshaft up against the top bearing. Write the measurement for bearing clearance on line 1 in column (C).2. Divide the measurement from Step 1 by 2. Write this number on line 1 in columns (B) & (D).3. Turn the crankshaft to put the dial indicator at (A). Adjust the dial indicator to "0" (zero).4. Turn the crankshaft counterclockwise to put the dial indicator at (B). Write the measurement in the chart.5. Turn the crankshaft counterclockwise to put the dial indicator at (C). Write the measurement in the chart.6. Turn the crankshaft counterclockwise to put the dial indicator at (D). Write the measurement in the chart.7. Add lines I & II by columns.8. Subtract the smaller number from the larger number in line III in columns (B) & (D). The result is the horizontal "eccentricity" (out of round). Line III, column (C) is the vertical eccentricity. 9. On the graph for total eccentricity find the point of intersection of the lines for vertical eccentricity and horizontal eccentricity.10. If the point of intersection is in the range marked "Acceptable" the bore is in alignment. If the point of intersection is in the range marked "Not Acceptable" do Step 11.11. Loosen the bolts holding the flywheel housing to the cylinder block. Hit the flywheel housing lightly with a hammer to put it in the correct position. Tighten the bolts holding the flywheel housing to the cylinder block and do Steps 1 through 10 again.