GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Optra 🢒 Engine 🢒 Engine Mechanical - 1.8L (LDA) 🢒 Oil Pump Replacement

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1291279 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the power steering pump, if equipped. Refer to Power Steering Pump Replacement .
  3. Remove the timing belt. Refer to Timing Belt Replacement .
  4. Disconnect the oil pressure switch connector.

    5. Object Number: 1291306 Size: SH
  5. Remove the oil pan. Refer to Oil Pan Replacement .
  6. Remove the oil suction pipe and support bracket bolts.
  7. Remove the oil suction pipe.

    8. Object Number: 1291324 Size: SH
  8. Remove the oil pump retaining bolts.
  9. Carefully separate the oil pump and gasket from the engine block and the oil pan.
  10. Remove the oil pump.
  11. Clean and inspect the oil pump. Refer to Oil Pump Cleaning and Inspection .

Installation Procedure

    Object Number: 1291324 Size: SH
  1. Apply Loctite® 242 to the oil pump bolts and room temperature vulcanizing (RTV) sealant to the new oil pump gasket.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the gasket to the oil pump and install the oil pump to the engine block with the bolts.

    3. Tighten
    Tighten the oil pump bolts to 10 N·m (89 lb in).


    Object Number: 1291326 Size: SH
  3. Install a new oil pump-to-crankshaft seal. Coat the lip of the seal with a thin coat of grease.

    4. Object Number: 1291306 Size: SH
  4. Coat the threads of the oil suction pipe and support bracket bolts with Loctite® 242.
  5. Install the oil suction pipe and bolts.

    6. Tighten
    Tighten the oil suction pipe and support bracket bolts to 10 N·m (89 lb in).


    Object Number: 1291279 Size: SH
  6. Install the oil pan. Refer to Oil Pan Replacement .
  7. Connect the oil pressure switch connector.
  8. Install the timing belt. Refer to Timing Belt Replacement .
  9. Install the power steering pump, if equipped. Refer to Power Steering Pump Replacement .
  10. Connect the negative battery cable.