DOWEL 1334952 - Caterpillar

Remove Crankshaft
START BY:a. remove rocker shaft assemblies and push rodsb. remove front drive housingc. remove rear gear group (Step 1 only)d. remove piston cooling jets
The rocker shaft assemblies and push rods do not have to be removed to remove the crankshaft, but bent push rods can be the result if they are not removed.
1. Put the engine in the position as shown. The weight of the 3512 Engine is approximately 6131 kg (12516 lb.). The weight of the 3516 Engine is approximately 7763 kg (17114 lb.). The counterweights does not have to be removed from the crankshaft, if the piston and connecting rod assemblies have been removed from the engine. 2. Put identification marks on counterweights (1) and remove them from the crankshaft. 3. Remove bearing caps (2) from the connecting rod, and push the connecting rods away from the crankshaft. Use wire to hold the upper half of the connecting rods away from the crankshaft. 4. Remove the center main bearing cap, and remove two thrust plates (3) from each side of the main bearing. 5. Use two of the bolts that hold the flywheel to the crankshaft, and install a bolt in each end of the crankshaft. Fasten a hoist to the crankshaft as shown. 6. Remove the remainder of main bearing caps (5) and remove crankshaft (4) from the cylinder block. The weight of the crankshaft in 3512 Engines is 545 kg (1202 lb.). The weight of the crankshaft used in 3516 Engines is 726 kg (1601 lb.).7. If necessary, remove bolts (7) to remove gears (6) from each end of the crankshaft.Install Crankshaft
If main bearing clearances or crankshaft endplay is to be checked, see Install Crankshaft Main Bearings. 1. Install gears (1) on each end of the crankshaft. 2. Make sure the upper halves of main bearings (2) (bearings with oil holes) are in position in the cylinder block. Put clean engine oil on the bearings. 3. Fasten a hoist to crankshaft (3) with two flywheel bolts, and put it in position. Make sure the word "FRONT" on the end of the crankshaft is toward the front of the cylinder block. 4. Make sure the lower halves of the main bearings are in position in the main bearing caps. Put clean engine oil on the bearings, and install all but the center main bearing cap on the cylinder block. The caps must be installed with the word "FRONT" and the cast part number toward the front of the cylinder block. Each cap has a number on the bottom surface and must be installed in the same position as the correct number on the right side of the block pan rail.5. Put Fel-Pro C100 Lubricant on the main bearing cap bolts. Tighten the bolts in the number sequence as shown to a torque of 136 14 N m (100 10 lb.ft.); then tighten each bolt again in the number sequence 180° 5° of a turn more. 6. Put clean engine oil on