GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1997 🢒 LeSabre 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Oil Pump Replacement

Removal Procedure

    Object Number: 26160 Size: SH
  1. Remove the front cover. Refer to Engine Front Cover Replacement .
  2. Remove the oil filter adapter.
  3. Remove the pressure relief valve and spring.
  4. Remove the oil pump cover screws.
  5. Remove the oil pump cover.
  6. Remove the oil pump gears.

Installation Procedure

    Object Number: 26160 Size: SH
  1. Lubricate the gears with petroleum jelly.
  2. Install oil pump gears.
  3. Pack the cavity with petroleum jelly.
  4. Install oil pump cover.
  5. Install oil pump cover screws.

    6. Tighten
    Tighten the screws to 11 N·m (98 lb in).

    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.

  6. Install oil filter adapter.
  7. Install front cover. Refer to Engine Front Cover Replacement .