2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Oil Pump: Reassembly

  1. INSTALL FRONT OIL PUMP OIL SEAL 
    1. Using SST and a hammer, tap in a new oil seal.

      SST 09350-30020 (09351-32140) 

      HINT:

      The oil seal end should be flush with the outer edge of the pump body.

    2. Coat the lip of the oil seal with MP grease.
      Fig 1: Tapping In Oil Seal
      G05290050Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. FIX FRONT OIL PUMP BODY SUB-ASSEMBLY 
    1. Place the oil pump body on the torque converter clutch.
  3. INSTALL FRONT OIL PUMP DRIVEN GEAR 
    1. Coat the driven gear with ATF.
    2. Install the driven gear to the oil pump body.
      Fig 2: Identifying Front Oil Pump Driven Gear
      G04963676Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL FRONT OIL PUMP DRIVE GEAR 
    1. Coat the drive gear with ATF.
    2. Install the drive gear to the oil pump body.
      Fig 3: Identifying Front Oil Pump Drive Gear
      G04963675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL FRONT OIL PUMP BODY O-RING 
    1. Install a new O-ring to the oil pump body.
      Fig 4: Identifying Front Oil Pump O-Ring
      G04963674Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL STATOR SHAFT ASSEMBLY 
    1. Align the stator shaft with each bolt hole.
    2. Install the 14 bolts.

      Torque: 12 N*m (122 kgf*cm, 9 ft.*lbf) 

      Fig 5: Installing Stator Shaft Bolts
      G04963673Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSTALL CLUTCH DRUM OIL SEAL RING 
    1. Coat 3 new oil seal rings with ATF.
    2. Squeeze the ends of the 3 oil seal rings so that the gap becomes 8 mm (0.315 in.) or less, and then install them to the stator shaft groove.
      NOTE: Do not expand the ring ends excessively.

      HINT:

      After installing the oil seal rings, check that they rotate smoothly.

      Fig 6: Identifying Oil Seal Rings
      G04963672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSPECT OIL PUMP DRIVE GEAR ROTATION (See  INSPECTION   ) 
  9. INSTALL FRONT OIL PUMP BODY O-RING 
    1. Install a new O-ring to the oil pump.
      Fig 7: Identifying Front Oil Pump O-Ring
      G04963670Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.