RAM 2500 Truck 4WD V8-5.9L VIN Z LDC (1998)
Crankshaft Main Bearing Seal: Service and Repair
Lower Seal
1. Remove the oil pan.
2. Remove the oil pump from the rear main bearing cap.
3. Remove the rear main bearing cap and discard the old lower seal.
4. Clean the rear main cap mating surfaces including the oil pan seal grooves.
5. Carefully install a new upper seal.
6. Lightly oil the new lower seal lips with engine oil.
7. Install a new lower seal in bearing cap with white paint facing the rear of engine.
Sealant Application To Bearing Cap
8. Apply 5 mm (0.20 inch) drop of Loctite 518, or equivalent, on each side of the rear main bearing cap. DO NOT over apply sealant or allow the
sealant to contact the rubber seal. Assemble bearing cap to cylinder block immediately after sealant application.
9. To align the bearing cap, use cap slot, alignment dowel and cap bolts. DO NOT remove excess material after assembly. DO NOT strike rear cap
more than 2 times for proper engagement.
10. Install the rear main bearing cap with cleaned and oiled cap bolts. Alternately tighten the cap bolts to 115 Nm (85 ft. lbs.) torque.
11. Install oil pump.
Apply Sealant To Bearing Cap To Block Joint
12. Apply Mopers Silicone Rubber Adhesive Sealant, or equivalent, at bearing cap to block joint to provide cap to block and oil pan sealing. Apply
enough sealant until a small amount is squeezed out. Withdraw nozzle and wipe excess sealant off the oil pan seal groove.
13. Immediately install the oil pan.
