TURBOCHARGER AS 5646221 - Caterpillar

Illustration 1 g00924764
Cylinder block
Table 1
Callout Quantity Part Specification Description
1 - Cylinder block
2 - Cylinder bore 105.000 to 105.025 mm (4.1338 to 4.1348 inch)
The first oversize bore diameter 105.5 to 105.525 mm (4.1535 to 4.1545 inch)
The second oversize bore diameter 106.000 to 106.025 mm (4.1732 to 4.1742 inch)
The maximum permissible wear for the cylinder bore 0 to 0.15 mm (0 to 0.0059 inch)
3 - Camshaft bearings Diameter of the bore in the cylinder block for the number 1 camshaft bearing 55.56 to 55.59 mm (2.188 to 2.189 inch)
Diameter of the bore in the cylinder block for the number 2 camshaft journal 50.54 to 50.60 mm (1.990 to 1.992 inch)
Diameter of the bore in the cylinder block for the number 3 camshaft journal 50.038 to 50.090 mm (1.969 to 1.972 inch)
4 - Main bearings Bore in the cylinder block for the main bearings 80.416 to 80.442 mm (3.1660 to 3.1670 inch)
Table 2
Procedure to Install the Main Bearing Cap Bolts
Callout Quantity Part Specification Description
5 - Main bearing cap bolts Apply clean engine oil to the threads of the main bearing cap bolts.
- - - Put the main bearing caps in the correct position that is indicated by a number on the top of the main bearing cap. Install the main bearing caps with the locating tabs in correct alignment with the recess in the cylinder block.
- - - Evenly tighten the main bearing cap bolts.
Torque for the main bearing cap bolts. 245 N m (180 lb ft)
Illustration 2 g00938203
Table 3
Procedure to Install the Allen Head Bolts for the Bridge
Callout Quantity Part Specification Description
- - - Use a straight edge in order to ensure that the bridge is aligned with the front face of the cylinder block.
6 - - Tighten allen head bolts for the bridge.
Torque for the allen head bolts 16 N m (12 lb ft)
7 - - When the bridge is installed on the cylinder block, apply a thin bead of 8T-9013 Silicone Sealant into groove at each end of the bridge.
- - - Total height of the cylinder block between the top and the bottom faces. 441.173 to 441.274 mm (17.3689 to 17.3729 inch)