CONTROL AR-HYDRAULIC 6Y4857 - Caterpillar

Table 1
Item Quantity Part Specification Description
- All The original size of the main bearing journal 76.159 to 76.180 mm (2.9984 to 2.9992 inch)
- All Maximum permissible wear of the main bearing journals 0.040 mm (0.0016 inch)
- All Surface finish of bearing journals, crank pins, and radii Ra 0.0025 microns (10 µ inch) The Shell for the Main Bearings
Bearing Shells
Table 2
Item Quantity Part Specification Description
- All Thickness at center of the shells 2.083 to 2.089 mm (0.0820 to 0.0823 inch)
- All Width of the main bearing shells 31.62 to 31.88 mm (1.244 to 1.255 inch)
- All Clearance between the bearing shell and the main bearing journals 0.057 to 0.117 mm (0.0022 to 0.0046 inch)