Oil Pump Disassembly

Transmission. Lexus Gs430, Gs300. Uzs190 Grs190
A760E Automatic Transmission. Lexus Gs430, Gs300. Uzs190 Grs190

  1. REMOVE FRONT OIL PUMP BODY O-RING

  2. FIX OIL PUMP ASSEMBLY

  3. REMOVE CLUTCH DRUM OIL SEAL RING

  4. REMOVE STATOR SHAFT ASSEMBLY

  5. REMOVE FRONT OIL PUMP BODY O-RING

  6. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY

  7. INSPECT STATOR SHAFT ASSEMBLY

  8. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY

  9. REMOVE FRONT OIL PUMP DRIVE GEAR

  10. REMOVE FRONT OIL PUMP DRIVEN GEAR

  11. REMOVE FRONT OIL PUMP OIL SEAL

Oil Pump -- Disassembly



1. REMOVE FRONT OIL PUMP BODY O-RING


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the O-ring from the oil pump assembly.



2. FIX OIL PUMP ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Oil Pump  Disassembly
  1. Place the oil pump body on the torque converter clutch.



3. REMOVE CLUTCH DRUM OIL SEAL RING


    Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Oil Pump  Disassembly
  1. Remove the 3 oil seal rings.



4. REMOVE STATOR SHAFT ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 14 bolts and the stator shaft from the oil pump body.



5. REMOVE FRONT OIL PUMP BODY O-RING


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the O-ring from the oil pump body.

  1. Remove the oil pump body from the torque converter clutch.



6. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a dial indicator, measure the inside diameter of the oil pump body bushing.

    Maximum inside diameter:
    38.138 mm (1.5015 in.)
    If the inside diameter is greater than the maximum inside diameter, replace the oil pump body.


7. INSPECT STATOR SHAFT ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a dial indicator, measure the inside diameter of the stator shaft bushing.

    Maximum inside diameter:
    Front side:
    21.527 mm (0.8475 in.)
    Rear side:
    32.03 mm (1.261 in.)
    If the inside diameter is greater than the maximum inside diameter, replace the stator shaft.


8. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Push the driven gear to one side of the body.

  1. Using a feeler gauge, measure the clearance.

    Standard body clearance:
    0.10 to 0.17 mm (0.0039 to 0.0067 in.)
    If the body clearance is greater than the standard clearance, check the drive gear, the driven gear and the pump body.


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a feeler gauge, measure the clearance between the driven gear teeth and the drive gear teeth.

    Standard tip clearance:
    0.070 to 0.150 mm (0.0028 to 0.0059 in.)
    If the tip clearance is greater than the standard clearance, check the drive gear, the driven gear and the pump body.


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a steel straight edge and a feeler gauge, measure the side clearance of both gears.

    Standard side clearance:
    0.03 to 0.05 mm (0.0012 to 0.002 in.)
  1. There are 7 different thicknesses for the drive and driven gears.

    Drive and driven gears thickness:
    Mark
    Thickness
    0
    10.736 to 10.742 mm (0.42268 to 0.42291 in.)
    1
    10.743 to 10.749 mm (0.42296 to 0.42319 in.)
    2
    10.750 to 10.756 mm (0.42323 to 0.42346 in.)
    3
    10.757 to 10.763 mm (0.42350 to 0.42374 in.)
    4
    10.764 to 10.770 mm (0.42378 to 0.42401 in.)
    5
    10.771 to 10.777 mm (0.42405 to 0.42429 in.)
    6
    10.778 to 10.784 mm (0.42433 to 0.42457 in.)
    If the side clearance is greater than the standard thickness, check the drive gear, the driven gear and the pump body.


9. REMOVE FRONT OIL PUMP DRIVE GEAR


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the front oil pump drive gear.



10. REMOVE FRONT OIL PUMP DRIVEN GEAR


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the front oil pump driven gear.



11. REMOVE FRONT OIL PUMP OIL SEAL


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a screwdriver, remove the oil seal.

    NOTICE:
    Do not damage the bushing and the oil pump body.