3406E and 3456 Industrial Engines Testing and Adjusting – Flywheel – Inspect

Face Runout (Axial Eccentricity) of the Flywheel

1. Refer to Illustration 1 and install the dial indicator. Always put a force on the crankshaft in the same direction before the dial indicator is read. to remove any crankshaft end clearance.

2. Set the dial indicator to read 0.0 mm (0.00 inch).

3. Turn the flywheel at intervals of 90 degrees and read the dial indicator.

4. Take the measurements at all four points. The difference between the lower measurements and the higher measurements that are performed at all four points must not be more than 0.13 mm (0.005 inch) runout per 25.4 mm (1.0 inch) of the diameter of the flywheel.

Bore Runout (Radial Eccentricity) of the Flywheel

1. Install 7H-1942 Dial Indicator (3) . Make an adjustment of 7H-1940 Universal Attachment (4) so the dial indicator makes contact on the flywheel.

2. Set the dial indicator to read 0.0 mm (0.00 inch).

3. Turn the flywheel at intervals of 90 degrees and read the dial indicator.

4. Take the measurements at all four points. The difference between the lower measurements and the higher measurements that are performed at all four points must not be more than the following values for the maximum permissible face runout (radial eccentricity) of the flywheel.Flywheel … 0.13 mm (0.005 inch)

5. To find the runout (eccentricity) of the pilot bearing bore, use the preceding procedure.

6. The runout (eccentricity) of the bore for the pilot bearing in the flywheel must not exceed the following values:Flywheel … 0.13 mm (0.005 inch)