3046 Engine for Caterpillar Built Machines Flywheel - Inspect Caterpillar

Inspect the Flywheel

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Illustration 1	g00987873
Exploded view of flywheel and flywheel housing (1) Gasket (2) Flywheel housing (3) Bolt (4) Rear oil seal (5) Flywheel (6) Bolt

1. Check for cracks or a damaged dowel hole.

2. Check the ring gear on flywheel (5) for teeth that are worn or damaged.

3. Inspect the flywheel bolts (6) for stripped threads.

Flatness of the Flywheel

Note: The flywheel must be removed from the engine in order to check the flatness.

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Illustration 2	g00987717
Flatness of flywheel

1. Place the flywheel on a surface plate.

2. Set a dial indicator at one side of the surface plate and move the dial indicator to the opposite side. Refer to Illustration 2.

3. Refer to Specifications, "Flywheel" for the correct values of the flatness.

Face Runout (Radial Eccentricity) of the Flywheel

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Illustration 3	g00987720
Runout of flywheel

1. Refer to Illustration 3 and install the dial indicator. Always put a force on the crankshaft in the same direction before the dial indicator is read. This will 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. Calculate the difference between the lower measurements and the higher measurements that are performed at all four points. Refer to Specifications, "Flywheel" for the correct values of the runout.