2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Oil Pump: Disassembly

  1. REMOVE OIL PUMP O-RING 
    1. Remove the O-ring from the oil pump.
      Fig 1: Identifying O-Ring
      G04948641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. SECURE OIL PUMP ASSEMBLY 
    1. Place the oil pump body on the torque converter clutch.
      Fig 2: Identifying Oil Pump Body
      G04948805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE CLUTCH DRUM OIL SEAL RING 
    1. Remove the 4 oil seal rings.
      Fig 3: Identifying Oil Seal Rings
      G04948806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. REMOVE STATOR SHAFT PISTON 
    1. Using a T30 "TORX" wrench, remove the 5 bolts, stator shaft spring sub-assembly and stator shaft piston
    2. Remove the 2 O-rings from the stator shaft piston
      Fig 4: Locating Stator Shaft Bolts
      G04948807Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE STATOR SHAFT CLUTCH DRUM THRUST WASHER 
    1. Remove the stator shaft clutch drum thrust washer
  6. INSPECT STATOR SHAFT SPRING SUB-ASSEMBLY  (See INSPECTION  )
    Fig 5: Identifying Stator Shaft Clutch Drum Thrust Washer
    G04948808Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE STATOR SHAFT ASSEMBLY 
    1. Remove the 2 bolts and stator shaft from the oil pump body.
  8. REMOVE FRONT OIL PUMP BODY O-RING 
    1. Remove the oil pump body from the torque converter clutch
      Fig 6: Locating Stator Shaft With Bolts
      G04948809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring from the oil pump body
  9. INSPECT STATOR SHAFT ASSEMBLY  (See INSPECTION  )
  10. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY  (See INSPECTION  )
  11. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY  (See INSPECTION  )
    Fig 7: Identifying O-Ring
    G04948810Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE FRONT OIL PUMP DRIVE GEAR 
    1. Remove the drive gear from the oil pump body
      Fig 8: Identifying Drive Gear From Oil Pump Body
      G04948811Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE FRONT OIL PUMP DRIVEN GEAR 
    1. Remove the driven gear from the oil pump body
      Fig 9: Identifying Driven Gear From Oil Pump Body
      G04948812Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. REMOVE FRONT OIL PUMP OIL SEAL 
    1. Using a screwdriver, pry out the oil seal.
      NOTE: Do not damage the bushing or oil pump body.
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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.