NUT AS 7W5746 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     8S-2241     Camshaft Bearing Tool Group     1    
8H-0684 Ratchet Wrench     1    Start By:
Remove the Flywheel Housing. Refer to Disassembly and Assembly, "Flywheel Housing - Remove and Install".
Remove the Oil Pan Plate. Refer to Disassembly and Assembly, "Oil Pan Plate - Remove and Install".
Remove the Camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g00478567
Use Tool (A) to remove the camshaft bearing from the cylinder block. Start with the front bearings and work to the rear bearing.Installation Procedure
Table 2
Required Tools    
Tool    Part Number    Part Description    Qty    
A     8S-2241     Camshaft Bearing Tool Group     1    
8H-0684 Ratchet Wrench     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g00478567
Use Tool (A) to install the camshaft bearings in the 3304B and 3306B cylinder block.Note: The camshaft bearings in the 3304B have pressure lubrication. The intermediate camshaft bearings and the rear camshaft bearings in the 3306B have splash lubrication.
Install the camshaft bearings in the 3304B cylinder block, as follows: (a) Install the front bearing to a depth of 0.57 0.5 mm (0.022 0.02 inch). Ensure that the oil holes are in a horizontal position and that the camshaft bearing joint is at the top of the engine. The camshaft bearing joint can not be more than 15° degrees from vertical in either direction. (b) Install the center bearing to a depth of 303.2 0.5 mm (11.94 0.02 inch). Ensure that the oil holes in the camshaft bearing are in alignment with the oil holes in the cylinder block. (c) Install the rear bearing to a depth of 604.9 0.5 mm (23.81 0.02 inch). Ensure that the oil holes in the camshaft bearing are in alignment with the oil holes in the cylinder block.
Illustration 3 g00478822
Install the camshaft bearings in the 3306B cylinder block, as follows:
Install front bearing (B) to a depth of 0.5 0.5 mm (.02 .02 inch). Ensure that the oil holes are in a horizontal position and that the camshaft bearing joint is at the top of the engine. The camshaft bearing joint cannot be more than 15 degrees from the vertical position in either direction.
Install the remainder of the bearings. Install the bearings to the dimensions that are given from the front face of the cylinder block: (C) 154.0 0.5 mm (6.06 .02 inch), (D) 303.2 0.5 mm (11.94 .02 inch), (E) 601.7 0.5 mm (23.69 .02 inch) and (F) 903.4 0.5 mm (35.57 .02 inch).End By:
Install the camshaft. Refer to Disassembly and Assembly, "Camshaft - Remove and Install".
Install the oil pan plate. Refer to Disassembly and Assembly, "Engine Oil Pan Plate - Remove and Install".
Install the flywheel