FLYWHEEL GP 4S7417 - Caterpillar

1. Turn the flywheel until threaded hole (1) is at the top.2. Remove upper five bolts (2). 3. Install two 5/8"-18 NF guide bolts (3) as shown.4. Fasten tool (A) to a hoist and to the flywheel using a 1/2"-13 NC x 1 3/4" bolt in threaded hole (1).5. Remove the other four bolts that hold the flywheel to the crankshaft. 6. Remove the flywheel with tool (A). Weight of the flywheel is 160 lb. (72 kg). 7. Remove gear (4) from the flywheel.Install Flywheel
When flywheel ring gear (1) is installed on the flywheel, the tooth chamfer side must be installed away from the flywheel.
1. Heat the flywheel ring gear (1) to a maximum temperature of 600°F (315°C). Install the flywheel ring gear on the flywheel. 2. Install two 5/8"-18 NF guide bolts (2) in the crankshaft as shown.3. Fasten tool (A) to the flywheel (3) and a hoist.4. Use tool (A) to put flywheel (3) in position over guide bolts (2). Weight of the flywheel is 160 lb. (72 kg). 5. Make an alignment of marks (4) on the end of the crankshaft and flywheel.6. Install the bottom four of nine bolts.7. Remove tool (A) and the two guide bolts.8. Install the other five bolts that hold the flywheel in place.