3126E Truck Engine Caterpillar

Installation Procedure

Note: Drill and tap the new flywheel ring gear if the outer bolt holes of the flywheel are used. Use the flywheel as a template and drill twelve holes to a diameter of 8.2 mm (0.32 inch). Thread the holes with a tap.

1. Heat the flywheel ring gear to a maximum temperature of 204 °C (400 °F). Do not use a torch to heat the flywheel ring gear. Install the flywheel ring gear on the flywheel. Position the flywheel ring gear with the part number toward the crankshaft. Allow the flywheel ring gear to cool. Use a soft hammer in order to seat the flywheel ring gear against the shoulder of the flywheel.

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Illustration 1	g00613482

2. Install Tooling (A) on flywheel (2). Fasten a suitable lifting device to flywheel (2) .

3. Place flywheel (2) in the original position on the guide bolt. Align the arrows on flywheel (2) and the crankshaft.

4. Apply 9S-3263 Thread Lock Compound to the threads of eight bolts (1) .

5. Install seven bolts (1) and the washers. Remove the guide bolt and install remaining bolt (1) and the washer. Tighten the bolts evenly to a torque of 120 ± 20 N·m (90 ± 15 lb ft).

6. Check the flywheel runout. Refer to Testing and Adjusting, "Flywheel - Inspect" for the correct procedure.