2008 Lexus IS FFACTORY 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) 

      Standard depth: -0.2 to 0.2 mm (-0.00787 to 0.00787 in.) 

      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 Oil Seal
      G05751233Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. SECURE 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 Driven Gear To Oil Pump Body
      G04948812Courtesy 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 Drive Gear To Oil Pump Body
      G04948811Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL FRONT OIL PUMP BODY O-RING 
    1. Coat a new O-ring with ATF.
    2. Install the O-ring to the oil pump body.
      Fig 4: Identifying O-Ring To Oil Pump Body
      G04948824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL STATOR SHAFT ASSEMBLY 
    1. Align the 2 bolt holes on the stator shaft and install the shaft as shown in the illustration.
    2. Install the 2 bolts.

      Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

      Fig 5: Locating Bolt Holes On Stator Shaft
      G04948809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSTALL STATOR SHAFT CLUTCH DRUM THRUST WASHER 
    1. Align the 2 claws and install the thrust washer.
      Fig 6: Identifying Thrust Washer
      G04948808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL STATOR SHAFT PISTON 
    1. Coat 2 new O-rings with ATF and install them to the stator shaft piston.
      Fig 7: Identifying O-Ring
      G04948827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the stator shaft piston and stator shaft spring sub-assembly.
    3. Using a T30 "TORX" wrench, install the 5 bolts.

      Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

  9. INSPECT OIL PUMP DRIVE GEAR ROTATION  (See INSPECTION  )
  10. INSTALL CLUTCH DRUM OIL SEAL RING 
    1. Coat 4 new oil seal rings with ATF.
      Fig 8: Locating Bolts
      G05751240Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Squeeze the ends of the 4 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 9: Identifying Oil Seal Rings
      G04948829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. INSTALL OIL PUMP O-RING 
    1. Install a new O-ring to the oil pump.
      Fig 10: Identifying Oil Seal Rings
      G04948771Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.