KIT-ENGINE GASKET 5326252 - Caterpillar

Start By:a. remove flywheel housingb. remove valve liftersc. remove pistons and connecting rod assembliesd. remove timing gear cover and oil pump 1. Fasten a hoist, and put the engine in position on Tool (A).2. Turn crankshaft (3) until the timing mark on the crankshaft gear is in alignment with the timing mark on the camshaft gear. For more detail about removal of main bearings, see the topic, "Remove & Install Crankshaft Main Bearings".3. Remove bolts (1) and main bearing caps (2). Remove the lower halves of the main bearings from the caps.4. Install two of the bolts that hold the flywheel in place in the end of the crankshaft.
Be careful not to damage the crankshaft journals when the crankshaft is removed.
5. Fasten a hoist, and remove crankshaft (3) from the engine. The weight of the crankshaft is approximately 54 kg (120 lb).6. Remove the upper halves of the main bearings from the cylinder block. 7. Install Tooling (B), and remove the gear from the crankshaft.Install Crankshaft & Gear
1. Install the key for the crankshaft gear so it is even with the end of the crankshaft.2. Heat the crankshaft gear to a maximum temperature of 260°C (500°F). Install the gear on the crankshaft with the timing mark on the gear toward the pulley end of the crankshaft.3. Install the thrust bearing for the No. 4 main. Install the bearings dry when the clearance checks are made. Put clean engine oil on the bearings for final assembly.4. Install the upper main bearings (the bearings with oil hole) into the engine block.5. Install two of the bolts that hold the flywheel in place in the end of the crankshaft. Fasten a hoist, and put the crankshaft in position in the block. Make sure the timing mark on the crankshaft gear is in alignment with the timing mark on the camshaft gear. For more details about installation of main bearings, see the topic, "Remove & Install Crankshaft Main Bearings" in this manual.
When the bearing caps are installed, make sure the number on the side of the cap is next to and respective with the number on the engine block.
If the crankshaft journals and bores for the block and rods were measured at disassembly and found to be within specifications, no further checks are necessary. However, if the serviceman still wants to measure the bearing clearances, Plastigage is recommended. Lead wire, shim stock or use of a dial bore gauge can damage the bearing surface.The serviceman must be very careful to use Plastigage correctly. The following points must be remembered....Make sure that the backs of the bearings and the bores are clean and dry....Make sure that the bearing locking tabs are properly seated in their slots....The crankshaft must be free of oil where the Plastigage touches it....If the main bearing clearances are checked with the engine upright or on its side, the crankshaft must be supported. Use a jack under an adjacent crankshaft counterweight, and hold the crankshaft against the crown of the