TURBOCHARGER GP 1871603 - Caterpillar

Remove Crankshaft
start by: a) remove timing gear coverb) remove flywheel housingc) remove pistonsd) remove crankshaft rear seal wear sleevee) remove crankshaft front seal wear sleevef) remove fuel injection pump housing and governor Check the bearing caps for a number as to their location. If a number can not be seen, put a number on the left side of cylinder block and bearing cap. 1. Loosen the bolts (2) that hold main bearing caps (1) to cylinder block.2. Install one of the bolts for flywheel in each end of the crankshaft. 3. Fasten a hoist and remove the main bearing caps. Remove bearings from bearing caps.4. Remove crankshaft from engine. Weight is 350 lb. (159 kg).5. Remove crankshaft main bearings from cylinder block. If new main bearings are not to be installed, keep old bearings with identification as to their location in cylinder block. 6. Use tooling (A) to remove crankshaft outer gear. Use a hammer and a chisel to remove spacer. 7. Use tooling (B) to remove dowel.8. Use tooling (A) to remove crankshaft inner gear.Install Crankshaft
1. Heat the crankshaft gears to a maximum temperature of 400°F (204°C). 2. Install crankshaft inner gear (2) on crankshaft.3. Install spacer on crankshaft.4. Install the pin in end of crankshaft. The pin must be extended no more than .25 in. (6.4 mm) from surface of crankshaft.5. Install the crankshaft outer gear (1) on crankshaft. the pin in crankshaft must be in alignment with notch in crankshaft gear (1).6. Clean the cylinder block and main bearing caps thoroughly. 7. Install upper half of main bearings (3) in the block. Put clean engine oil on the bearings and journals of crankshaft.8. Install one bolt for flywheel on each end of crankshaft. 9. Fasten a hoist and put crankshaft in position in block. Be sure the "V" mark on camshaft gear is in alignment with "V" mark on crankshaft gear.10. Install main bearings in bearing caps. Be sure the tabs (4) on back of bearings fit in the grooves of caps and cylinder block.11. Use wire (B) to check bearing clearance.12. Put wire (B) on the bearing.
Be sure main bearing caps (5) are installed so the numbers on the side of the cylinder block are the same as the numbers on the bearing caps, and the arrows on the caps are toward the front of the cylinder block.
When the bearing clearance is checked and the engine is in a vertical position, such as in the vehicle, the crankshaft will have to be lifted up with a force equal to the weight of the crankshaft and held against the upper halves of the main bearings to get a correct measurement with wire (B). The wire will not hold the weight of the crankshaft and give a correct indication. If the engine is in a horizontal position, such as on an engine stand, it is not necessary to hold the crankshaft up. Do not turn crankshaft when