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CONNECTING ROD BEARINGS STANDARD PROCEDURE—CONNECTING ROD Fit all rods on a bank until completed. DO NOT alternate from one bank to another, because connect- The bearing caps are not interchangeable and should be marked at removal to ensure correct Each bearing cap has a small V-groove across the parting face. When installing the lower bearing shell, The bearing shells must be installed so that the tangs are in the machined grooves in the rods and Limits of taper or out-of-round on any crankshaft journals should be held to 0.025 mm (0.001 in.). CRANKSHAFT DESCRIPTION The crankshaft (Fig. 26) is of a forged steel splayed type design, with four main bearing journals.The OPERATION The crankshaft transfers force generated by com- bustion within the cylinder bores to the flywheel or REMOVAL (1) Remove the oil pan (Refer to 9 - ENGINE/LU- BRICATION/OIL PAN - REMOVAL). (2) Remove the oil pump (Refer to 9 - ENGINE/ LUBRICATION/OIL PUMP - REMOVAL). (3) Identify bearing caps before removal. Remove bearing caps and bearings one at a time. (4) Lift the crankshaft out of the block. seals. (6) Remove and discard the front crankshaft oil seal. INSTALLATION (1) Lightly oil the new upper seal lips with engine oil. (2) Install the new upper rear bearing oil seal with the white paint facing towards the rear of the engine. (3) Position the crankshaft into the cylinder block. oil. (5) Install the new lower rear bearing oil seal into the bearing cap with the white paint facing towards (6) Apply 5 mm (0.20 in.) drop of Loctite 518, or equivalent, on each side of the rear main bearing cap (7) To align the bearing cap, use cap slot, align- ment dowel, and cap bolts. DO NOT remove excess (8) Clean and oil all cap bolts. Install all main bearing caps. Install all cap bolts and alternately (9) Install oil pump (Refer to 9 - ENGINE/LUBRI- CATION/OIL PUMP - INSTALLATION). (10) Apply Mopar t Silicone Rubber Adhesive Seal- ant, or equivalent, at bearing cap-to-block joint to (11) Install new front crankshaft oil seal (Refer to 9 - ENGINE/ENGINE BLOCK/CRANKSHAFT OIL (12) Immediately install the oil pan (Refer to 9 - ENGINE/LUBRICATION/OIL PAN - INSTALLA- TION). Fig. 26 Crankshaft—3.9L Engine 9 - 92 ENGINE 3.9L AN |