Toyota Corolla (E120): Overhaul

1. Remove oil pump relief valve

  1. Remove the oil pump relief valve plug, oil pump relief valve spring and oil pump relief valve.
  1.  Oil pump relief valve plug
  2.  oil pump relief valve spring
  3.  oil pump relief valve

2. Inspect oil pump assy

  1. Remove 3 screws and oil pump cover.

  1. Inspect the oil pump relief valve.
  1.  Coat the valve with engine oil and check that it falls smoothly into the valve hole by it own weight.
  1.  inspect the oil pump rotor sub–assembly.
  1. Coat the oil pump gear set with engine oil and place them into the oil pump body. Check that the rotors revolves smoothly.

  1.  inspect rotor tip clearance.
  1. Using a feeler gauge, measure the clearance between the drive and driven rotor tips.

    Standard tip clearance: 0.040 – 0.160 Mm (0.0016 – 0.0063 In.)

  1. Inspect body clearance.
  1. Using a feeler gauge, measure the clearance between the driven rotor and body.

    Standard body clearance: 0.260 – 0.325 Mm (0.0102 – 0.0128 In.)

  1. Inspect rotor side clearance.
  1.  Using a feeler gauge and precision straight edge, measure the clearance between the rotors and precision straight edge.

    Standard side clearance: 0.025 – 0.071 Mm (0.0010 – 0.0028 In.)

  1. Install oil pump rotor sub–assembly.
  1.  Coat the oil pump gear set with engine oil and place it into pump body with the marks facing the pump body cover side.

  1. Install oil pump rotor sub–assembly.

    (1) Coat the oil pump gear set with engine oil and place it into pump body with the marks facing the pump body cover side.

3. Install oil pump relief valve

  1. Install the oil pump relief valve plug, oil pump relief valve spring and oil pump relief valve.

    Torque: 37 nvm (375 Kgf·cm, 27 ft·lbf)

  1.  oil pump relief valve plug
  2.  oil pump relief valve spring
  3.  oil pump relief valve
    Share this page:

    Other materials:

    On–vehicle inspection
    1. Inspect cooling system for leaks Caution: to avoid the danger of being burned, do not remove the radiator cap while the engine and radiator are still hot, as fluid and steam can be blown out under pressure.  fill the radiator with coolant and attach a radiator cap tester.   ...

    Circuit description
    When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...

    Inspection procedure
    Hint: when the throttle position is slightly opened (the accelerator pedal is slightly depressed) because a floor carpet is overlapped on the accelerator pedal, or if not fully releasing the accelerator pedal, etc., Dtc p505 will possibly be detected. Read freeze frame data using the ...