NUT 5W4019 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 194-3541 4 mm Hex Drive Socket 1 Start By:
Remove the crankshaft. Refer to Disassembly and Assembly, "Crankshaft - Remove " for the correct procedure.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01254108
Support crankshaft (1) on a suitable stand.
Use Tooling (A) in order to remove Allen head screws (2) from crankshaft timing ring (3). Do not reuse the Allen head screws.
Carefully remove crankshaft timing ring (3) from crankshaft (1). Do not reuse the crankshaft timing ring. Note: Ensure that seal surface (4) of the crankshaft is not damaged when the crankshaft timing ring is removed.Note: Do not remove dowel (5) from crankshaft (1) unless the dowel is damaged.Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 194-3541 4 mm Hex Drive Socket 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Support crankshaft (1) on a suitable stand.
Ensure that the flange for the crankshaft timing ring on the crankshaft is clean and free from damage.
Illustration 2 g01254108
If dowel (5) was removed, install a new dowel to crankshaft (1).
Position crankshaft timing ring (3) onto the crankshaft with the teeth toward rear seal surface (4). Align the hole in crankshaft timing ring (3) with dowel (5). Carefully install crankshaft timing ring (3) to crankshaft (1). Note: Ensure that seal surface (4) on the crankshaft is not damaged when the crankshaft timing ring is installed.
Use Tooling (A) to install new allen head screws (2). Tighten the allen head screws to a torque of 9 N m (80 lb in). End By:
Install the crankshaft. Refer to Disassembly and Assembly, "Crankshaft - Install " for the correct procedure.