2003 Toyota PriusFACTORY OEM SERVICE PROCEDURE

On-Vehicle Repair

  1. REMOVE ENGINE UNDER COVER LH 
  2. REMOVE OIL PUMP 
    1. Remove the plug.
    2. Remove the O-ring from the plug.
      Fig 1: Removing O-Ring From Plug
      G03431022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 5 bolts and oil pump cover.
      Fig 2: Removing & Oil Pump Cover
      G03431023Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the O-ring.
      Fig 3: Removing O-Ring
      G03431024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the oil pump driven rotor and drive rotor.
      Fig 4: Removing Oil Pump Driven Rotor & Drive Rotor
      G03431025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Remove the oil pump drive shaft.
  3. INSTALL OIL PUMP 
    1. Apply ATF to each sliding part.
    2. Install the oil pump drive shaft.
      Fig 5: Installing Oil Pump Drive Shaft
      G03431026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the oil pump driven rotor and drive rotor.
      Fig 6: Installing Oil Pump Driven Rotor & Drive Rotor
      G03431027Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Install a new O-ring.
      Fig 7: Installing O-Ring
      G03431028Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Apply liquid sealer to 2 or 3 threads of the bolt end.

      Sealant:  Part No. 08833-00080, THREE BOND 1344, LOCTITE 242 or equivalent

    6. Install the oil pump cover with the 5 bolts.

      Torque:  5.5 N.m (56 kgf.cm, 49 in.lbf)

      Fig 8: Installing Oil Pump Cover
      G03431029Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Install a new O-ring and the plug.

      Torque:  7.35 N.m (75 kgf.cm, 65 in.lbf)

      Fig 9: Installing O-Ring & Plug
      G03431030Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL ENGINE UNDER COVER LH 
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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