BOLT-SOCKET HEAD 8T9405 - Caterpillar

Illustration 1 g01254512
Typical example (1) The bearing shell for the connecting rodFor the correct procedure to install the bearing shell for the connecting rod, refer to Disassembly and Assembly, "Pistons and Connecting Rods - Assemble".
Table 1
Thickness of Connecting Rod Bearing at the Center     1.995 to 2.002 mm (0.07854 to 0.07882 inch)    
Bearing Clearance    
0.031 to 0.078 mm (0.00122 to 0.00307 inch)    
Table 2
Oversize Connecting Rod Bearing    
0.25 mm (0.010 inch)    
0.51 mm (0.020 inch)    
0.76 mm (0.030 inch)    
Illustration 2 g01950657
Typical example (U) Day code (V) Code for the connecting rod (X) Code for the Connecting rod cap (Y) Year code (Z) Code for the grade of connecting rodNote: The day code is from the first day in the year. For example, "001" will be the first day of the appropriate year.The mating surfaces of the connecting rod are produced by hydraulically fracturing the forged connecting rod. Ensure that the correct cap for the connecting rod is installed with the correct connecting rod. Ensure that the serial numbers for both components match. (2) Torque of the setscrews for the connecting rod ... 40 N m (30 lb ft)Tighten the setscrews for the connecting rod for an additional 120 degrees. The setscrews for the connecting rod (2) must be replaced after this procedure.Note: Always tighten the connecting rod cap to the connecting rod, when the assembly is out of the engine. Tighten the assembly to the following torque 20 N m (14 lb ft).
Illustration 3 g01254518
Typical example (3) Diameter of the finished bore for the piston pin ... 39.738 to 39.723 mm (1.5645 to 1.5639 inch) (4) Distance between the parent bores ... 219.05 to 219.1 mm (8.6240 to 8.6260 inch) (5) Diameter for the finished bore for the connecting rod bearing ... 72.045 to 72.058 mm (2.83641 to 2.83692 inch)The connecting rod is color coded. The color code is a reference for the length of the connecting rod. Refer to table 3 for the length of connecting rod.
Table 3
Specifications for the Connecting Rod    
Grade Letter    Color Code    Length Of The Connecting Rod    
B     Blue    
163.081 to 163.114 mm (6.42050 to 6.42180 inch)