Oil Pump Installation. Buick GL7 (Export) 2001

For 1990-2009 cars

1. Install a new O-ring to the engine block.
2. Lubricate the O-ring with engine oil.
3. Install the oil pump.

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.

4. Install the oil pump bolts.

Tighten
Tighten the oil pump bolts to 21 N·m (15 lb ft).

Important: Do not damage the crankshaft sensor reluctor teeth.

5. Install the oil pump drive gear and crank sensor reluctor assembly.
6. Install the oil pump driven gear.

Notice: Do not use an impact driver to remove or install the oil pump driven gear nut. Use of an impact driver may shear the oil pump drive gear pin in the crankshaft.

Important: Look for an "L" on the end of the oil pump shaft. If there is an "L" present, the nut and shaft have left hand threads. Service the nut accordingly.

7. While holding the secondary oil pump shaft with a hex driver, install the oil pump driven gear nut.

Tighten
Tighten the oil pump driven gear nut to 100 N·m (74 lb ft).