3204 VEHICULAR ENGINE FOR D3 TRACTOR, 931 TRACK-TYPE LOADER Caterpillar

1. Remove top bolt (1) and install a 7/16"-20 NF guide bolt 6" long in the crankshaft.

2. Remove the remainder of the flywheel bolts.

3. Use two persons and remove flywheel (2) from the crankshaft and flywheel housing. The weight is 70 lb. (32 kg).

4. Remove guide bolt from the crankshaft.

Install Flywheel

1. Install a 7/16"-20 NF guide bolt (1) in the top of the crankshaft.

2. Use two persons and install flywheel (2) on the guide bolt with the mark on the flywheel in alignment with the mark on the crankshaft.

3. Slide the flywheel in position against the crankshaft. Install bolts (3) that hold the flywheel in position. Remove the guide bolt and install the other flywheel bolts. Tighten the bolts to a torque of 55 ± 5 lb.ft. (75 ± 7 N·m).