ENGINE AR 1079664 - Caterpillar

Illustration 2 g01889993
No. 1 Upper Main Bearing
Install upper bearings (9) to the cylinder block. Ensure that the locating tabs for the upper bearings are seated in the slots in the cylinder block. Note: Number 1 upper main bearing has an oil slot. See Illustration 2. All other upper bearings have a groove and two oil holes.
Lubricate upper bearings (9) with clean engine oil.
Illustration 3 g01254099
Typical example
Attach Tooling (A) and a suitable lifting device to crankshaft (8). Carefully lift the crankshaft into the cylinder block. The weight of the crankshaft is approximately 30 kg (66 lb). Remove Tooling (A). Note: Do not damage any of the finished surfaces on the crankshaft. Do not damage the bearing.
Illustration 4 g01254100
Typical example
For number three bearing, ensure that thrust washers (10) are clean and free from wear or damage. If necessary, replace the thrust washers. Lubricate thrust washers (10) with clean engine oil. Slide the thrust washers into position between the crankshaft and the cylinder block. Note: The grooves in the thrust washers must be located against the crankshaft.
Illustration 5 g01253146
Illustration 6 g01253137
Install lower bearings (5) into bearing caps (4). Ensure that the locating tabs for the lower bearings are correctly seated into the slots in the bearing caps. For number three bearing cap, ensure that thrust washers (7) are clean and free from wear or damage. If necessary, replace both the thrust washers. Lubricate thrust washers (7) with clean engine oil. Place the thrust washers into position on the bearing cap. Ensure that the locating tab is correctly seated in the bearing cap. Note: The lower bearing is a plain bearing that has no oil holes.
Lubricate lower bearings (5) and lubricate the journals of crankshaft (8) with clean engine oil. Install bearing caps (4) to the cylinder block. Note: Ensure the correct location and orientation of the bearing caps. The locating tabs for the upper and the lower bearings should be on the same side of the engine.
Illustration 7 g01253719
Lubricate the threads of bolts (3) with clean engine oil. Lubricate the underside of the heads of the bolts with clean engine oil.
Install bolts (3) to bearing caps (4). Evenly tighten the bolts in order to pull the caps into position. Ensure that the caps are correctly seated. Note: Do not tap the bearing caps into position as the bearing may be dislodged.
Tighten bolts (3) to a torque of 245 N m (180 lb ft).
Rotate the crankshaft in order to ensure that there is no binding.
Illustration 8 g01253186
Typical example
Check the crankshaft end play. Push the crankshaft toward the front of the engine. Install Tooling (B) to the cylinder block and the rear face of the crankshaft. Push the crankshaft toward the rear of the engine. Use Tooling (B) to measure the crankshaft end play. The permissible crankshaft end play is 0.05 mm (0.00197 inch) to 0.38 mm (0.01496 inch).
If the crankshaft has been replaced or the crankshaft has been reconditioned, inspect the height of the piston above the cylinder block. Refer to Systems Operation, Testing and Adjusting, "Piston Height -