GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2005 🢒 Unit Repair 🢒 Engine 🢒 Engine Mechanical - 5.7L (LS1 Export) 🢒 Oil Pump Assemble

    Object Number: 65060 Size: SH

    Important: Prior to assembling the oil pump, coat all wear or internal surfaces with clean engine oil.

  1. Install the driven gear into the pump housing.

    2. Install the driven gear with the orientation mark facing the pump cover.


    Object Number: 65058 Size: SH
  2. Install the drive gear into the pump housing.

    3. Object Number: 65057 Size: SH
  3. Install the oil pump cover.

    4. Object Number: 65055 Size: SH

    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 pump cover bolts.

    5. Tighten
    Tighten the oil pump cover bolts to 12 N·m (106 lb in).


    Object Number: 65076 Size: SH
  5. Install the regulator valve.

    6. Object Number: 65068 Size: SH
  6. Install a NEW regulator valve spring.

    7. Object Number: 65064 Size: SH
  7. Install the pressure regulator valve plug.

    8. Tighten
    Tighten the pressure regulator valve plug to 12 N·m (106 lb in).

  8. Inspect the oil pump for smooth operation by rotating the drive gear.