2007 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Fuel Pump: Reassembly

  1. INSTALL FUEL PUMP ASSEMBLY 
    1. Apply some gasoline to a new seal.
    2. Install the spacer and a new seal to the fuel pump.
    3. Push in the fuel pump.
  2. INSTALL FUEL PUMP FILTER 
    1. Install the filter with a new clip.
  3. INSTALL FUEL SUCTION PLATE WITH SENDER GAUGE 
    1. Apply a light coat of gasoline to a new O-ring, and install it to the fuel port of the fuel suction plate.
    2. Connect the fuel pump connector.
    3. Push the fuel filter, and attach the 4 snap claws to the claw holes.
      Fig 1: Identifying Snap Claws To Claw Holes
      G05289191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL FUEL PRESSURE WITH JET PUMP REGULATOR ASSEMBLY 
    1. Apply a light coat of gasoline to a new O-ring, and install it to the fuel pressure regulator.
    2. Push in the fuel pressure regulator to the fuel filter.
    3. Check that the fuel pressure regulator rotates smoothly.

      If it does not rotates smoothly, the O-ring may be pinched. Remove the fuel pressure regulator and perform the 2 steps above.

      Fig 2: Pushing In Fuel Pressure Regulator To Fuel Filter
      G05289192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the fuel return jet tube to the clamp of the fuel filter.
    5. Install the fuel pump cushion rubber.
  5. INSTALL NO. 2 FUEL SUCTION SUPPORT 
    1. Push the fuel suction support, and attach the 3 snap claws to the claw holes.
      Fig 3: Pushing Fuel Suction Support And Snap Claws
      G05289193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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