Crankshaft Main Bearings: Installation

When installing a new upper bearing shell, slightly chamfer sharp edges from plain side.

1. Start bearing in place, and insert Main Bearing Tool C-3059 into oil hole of crankshaft. See Figure. Slowly rotate crankshaft counter-clockwise sliding bearing into position. Remove Special Main Bearing Tool C-3059. Install each main cap and tighten bolts finger tight. Tighten number 1, 3 and 4 main cap bolts to 41 N.m + 1/4 Turn (30 ft. lbs. + 1/4 Turn). See Figure. Then tighten #3 tie bolts to 54 N.m (40 ft. lbs.). See Figure.
2. Rotate crankshaft until number 6 piston is at TDC. To ensure correct thrust bearing alignment following procedures must be done: Move crankshaft all way to rear of its travel. Then, move crankshaft all way to front of its travel.
3. Wedge a appropriate tool between rear of cylinder block and rear crankshaft counterweight. This will hold crankshaft in it's most forward position. Tighten #2 Thrust Bearing cap bolts to 41 N.m + 1/4 Turn (30 ft. lbs. + 1/4 Turn). Then tighten #2 tie bolts to 54 N.m (40 ft. lbs.). Remove holding tool.