SEAL 4740599 - Caterpillar

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Guide Bolt
(1/2 inch - 20 NF by 4 inch) 2
B 138-7575 Link Bracket 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Thoroughly clean the flywheel housing. Inspect the crankshaft rear seal for leaks. If there are any oil leaks, refer to this Disassembly and Assembly Manual, "Crankshaft Rear Seal - Remove" for the correct procedure.
Illustration 1 g00909349
Always wear protective gloves when handling parts that have been heated.
Note: If ring gear (3) has been removed from flywheel (2). Identify the orientation of ring gear (3) on the flywheel for the correct positioning when the new ring gear is installed.
Heat the ring gear to 250 °C (480 °F) in an oven to install the ring gear onto the flywheel. Ensure that the orientation of the ring gear is correct and quickly install the ring gear onto the flywheel.Note: Do not use a torch to heat the ring gear.
Clean flywheel (2) and ring gear (3) when the ring gear has cooled.
Illustration 2 g01148312
Install the Tooling (A) on the crankshaft. Install the Tooling (B) and a suitable lifting device on flywheel (2) and position the flywheel in the flywheel housing. The weight of the flywheel is approximately 54 kg (119 lb).
Install bolts (1) to flywheel (2).
Remove Tooling (A). Install the remaining bolts (1) that secure flywheel (2) to the crankshaft. Tighten the bolts (1) to a torque of 140 N m (103 lb ft).
Check the alignment of flywheel (2) with the crankshaft. Refer to Testing and Adjusting, "Flywheel - Inspect" for the correct procedure.