Flywheel Housing - Inspect
Bore Runout (Radial Eccentricity) of the Flywheel Housing
- Fasten a dial indicator to the flywheel so the anvil of the dial indicator will contact the bore of the flywheel housing.
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| Illustration 1 | g00285934 |
8T-5096 Dial Indicator | |
- While the dial indicator is in the position at Location "C" adjust the dial indicator to 0.0 mm (.00 inch). Push the crankshaft upward against the top of the bearing. Refer to the Illustration 2. Write the measurement for bearing clearance on Line "1" in Column "C".
Note: Write the measurements for the dial indicator with the correct notations. This notation is necessary for making the calculations in the chart correctly.
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| Illustration 2 | g00285936 |
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| Illustration 3 | g00285932 |
Checking Bore Runout Of The Flywheel Housing | |
- Divide the measurement from Step 2 by two. Write this number on Line "1" in Columns "B" and "D".
- Turn the flywheel in order to put the dial indicator at position (A). Adjust the dial indicator to 0.0 mm (.00 inch).
- Turn the flywheel counterclockwise in order to put the dial indicator at position (B). Write the measurements in the chart.
- Turn the flywheel counterclockwise in order to put the dial indicator at position (C). Write the measurement in the chart.
- Turn the flywheel counterclockwise until the dial indicator is at position (D). Write the measurement in the chart.
- Add the lines together in each column.
- Subtract the smaller number from the larger number in Column "B" and Column "D". Place this number on Line "III". The result is the horizontal eccentricity (out of round). Line "III" in Column "C" is the vertical eccentricity.
- On the graph for total eccentricity, find the point of intersection of the lines for vertical eccentricity and horizontal eccentricity.
- If the point of intersection is in the range that is marked "Acceptable", the bore is in alignment.
- If the point of intersection is in the range that is marked "Not Acceptable", the flywheel housing must be changed.
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| Illustration 4 | g00286046 |
Graph For Total Eccentricity (1) Total vertical eccentricity. (2) Total horizontal eccentricity. (3) Acceptable value. (4) Unacceptable value. | |
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