GAUGE & WARNING GP 9N4237 - Caterpillar

start by:a) remove oil pan 1. Turn the crankshaft until two pistons are at bottom center. Remove connecting rod caps (1) from the two connecting rods. Remove the lower half of the bearings from the caps.2. Push the connecting rods away from the crankshaft and remove the upper half of the bearings.
Be careful not to damage the crankshaft journals. Do not turn the crankshaft while any of the connecting rod caps are removed.
3. Clean the surfaces where the bearings fit. Install the upper half of the new bearings in the rods. Put the connecting rods in position on the crankshaft.4. Clean the surfaces where the bearings fit. Install the lower half of the new bearings in the caps. Put clean engine oil on the bolt threads and contact surfaces of the nuts.
When the connecting rod caps are installed make sure that the numbers on the side of the caps are next to and respective with the number on the side of the connecting rods.
5. Check the bearing clearance with Plastigage (A). Put the caps (1) in position on the connecting rods and install the nuts. Tighten the nuts to a torque of 30 3 lb.ft. (40 4 N m). Put a mark on each nut and the end of each bolt. Tighten the nuts 60° 5° more.6. Remove the cap. Measure the thickness of the Plastigage. The rod bearing clearance must be .0033 .0018 in. (0.084 0.046 mm). The maximum permissible clearance is .007 in. (0.18 mm).7. Put clean engine oil on the bearings and crankshaft journals. Put the caps in position on the connecting rods and install the nuts. Tighten the nuts to a torque of 30 3 lb.ft. (40 4 N m). Put a mark on each nut and the end of each bolt. Tighten the nuts 60° 5° more.8. Do Steps 1 through 7 again for the other bearings.end by:a) install oil pan