GASKET 4735090 - Caterpillar

Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8H-8581 Feeler Gauge 1
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: The upper bearing for the No. 1 crankshaft journal has a lubricating oil slot. The remaining upper bearings have an oil hole for lubrication. All new upper bearings will have the slot for lubrication.
Illustration 1 g00934767
Clean upper main bearing (4) and lubricate the bearing surface with clean engine oil. Note: Ensure that the upper halves of the main bearings are installed so that the bearing tabs fit into the notch in the cylinder block.
Only the upper half of the main bearing has lubrication holes. Make sure the upper half of the main bearing is installed correctly in the cylinder block to ensure proper lubrication.
Slide upper main bearing (4) into position between the crankshaft journal and the cylinder block.
Illustration 2 g00934803
Clean main bearing cap (2) and lower main bearing (3). Lubricate the bearing surface of lower main bearing (3) with clean engine oil. Note: Ensure that the lower halves of the main bearings are installed so that the bearing tabs fit into the notch in the main bearing caps.
Install lower main bearing (3) in main bearing cap (2).
Illustration 3 g00947861
Install the upper half of thrust washer (6) on each side of the center main bearing in the cylinder block. The grooves on the thrust washer must be located against the crankshaft. If necessary, move the crankshaft to the front or to the rear in order to install the thrust washer.
Illustration 4 g00934744
Install the lower half of thrust washer (5) on each side of the center main bearing cap. The grooves on the thrust washer must be located against the crankshaft.
Illustration 5 g00947823
Install main bearing caps (2). Lubricate the threads of bolts (1) with clean engine oil.
Install bolts (1). Tighten bolts (1) to a torque of 245 N m (181 lb ft).
Rotate the crankshaft in order to ensure that the crankshaft turns freely.
Repeat Steps 1 through 9 for the remaining main bearings.
Illustration 6 g00975012
Check the crankshaft end play. Use a prybar to move the crankshaft toward the front of the engine. Use Tooling (A) to measure the end play between rear thrust washer (5) and the crankshaft. The maximum permissible crankshaft end play is 0.51 mm (0.020 inch). Note: If the crankshaft was not removed for the rear main bearing removal, the following components must be installed: bridge assembly, rear oil seal housing, flywheel housing and flywheel.End By:
Install the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Install".