Removal Procedure
- Remove the intake manifold. Refer to Intake Manifold Replacement .
- Remove the oil pump drive bolt.
- Remove the oil pump drive.
- Clean and inspect the oil pump drive. Refer to Oil Pump Drive Cleaning and Inspection in Engine Mechanical - 8.1 L Unit Repair.
Installation Procedure
- Apply grease to the oil pump drive gear for ease of assembly.
- Line up the oil pump drive, making sure that the oil pump is fully seated in the engine block.
- Install the oil pump, making sure that the oil pump drive is fully seated in the engine block.
- Install the intake manifold. Refer to Intake Manifold Replacement .
Important: Correct alignment of the oil pump drive and oil pump driveshaft is critical. Make sure both components mate correctly, or engine damage may occur.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten
Tighten the oil pump drive bolt to 25 N·m (18 lb ft).
