GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Optra 🢒 Engine 🢒 Engine Mechanical - 1.8L (L79) 🢒 Oil Pump Replacement

Removal Procedure

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


    Object Number: 1289825 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the timing belt. Refer to Timing Belt Replacement.
  3. Remove the rear timing belt cover. Refer to Timing Belt Cover Replacement.
  4. Disconnect the oil pressure switch connector.

    5. Object Number: 1289828 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: 1289829 Size: SH
  8. Remove the oil pump retaining bolts.
  9. Carefully separate the oil pump and gasket from the engine block and oil pan.
  10. Remove the oil pump.

Installation Procedure

    Object Number: 1289829 Size: SH
  1. Apply Loctite® 242 to the oil pump bolts and room temperature vulcanizing (RTV) sealant to the new oil pump gasket.

    2. Caution: Refer to Fastener Caution 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 retaining bolts to 10 N·m (89 lb in).


    Object Number: 1289830 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: 1289828 Size: SH
  4. Coat the threads of the oil suction pipe and support the bracket bolts with Loctite® 242.
  5. Install the oil suction pipe and the bolts.

    6. Tighten

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

    Object Number: 1289825 Size: SH
  6. Install the oil pan. Refer to Oil Pan Replacement.
  7. Connect the oil pressure switch connector.
  8. Install the rear timing belt cover. Refer to Timing Belt Cover Replacement.
  9. Install the timing belt. Refer to Timing Belt Replacement.
  10. Connect the negative battery cable.