Oil Pump Disassembly

Drivetrain. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
A343E Automatic Transmission Transaxle. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

  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. INSPECT FRONT OIL PUMP BODY

  6. INSPECT STATOR SHAFT ASSEMBLY

  7. INSPECT CLEARANCE OF FRONT OIL PUMP BODY

  8. REMOVE FRONT OIL PUMP DRIVE GEAR

  9. REMOVE FRONT OIL PUMP DRIVEN GEAR

  10. REMOVE FRONT OIL PUMP OIL SEAL

Oil Pump -- Disassembly



1. REMOVE FRONT OIL PUMP BODY O-RING


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly


2. FIX OIL PUMP ASSEMBLY


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Place the oil pump body on the torque converter assembly.

    Text in Illustration
    *1
    Torque converter assembly


3. REMOVE CLUTCH DRUM OIL SEAL RING


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Remove the 2 clutch drum oil seal rings.



4. REMOVE STATOR SHAFT ASSEMBLY


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Remove the 13 bolts and stator shaft assembly from the oil pump body.

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



5. INSPECT FRONT OIL PUMP BODY


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Using a dial indicator, measure the inside diameter of the oil pump body bush.

    Maximum inside diameter:
    38.138 mm (1.50 in.)
    If the inside diameter is more than the maximum, replace the oil pump body.


6. INSPECT STATOR SHAFT ASSEMBLY


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Using a dial indicator, measure the inside diameter of the stator shaft bush.

    Maximum Inside Diameter:
    Front Side
    Rear Side
    21.527 mm (0.847 in.)
    27.026 mm (1.06 in.)
    If the inside diameter is more than the maximum, replace the stator shaft.


7. INSPECT CLEARANCE OF FRONT OIL PUMP BODY


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Push the driven gear to one side of the body.

  1. Using a feeler gauge, measure the body clearance.

    Standard body clearance:
    0.07 to 0.15 mm (0.00276 to 0.00590 in.)
    If the body clearance is more than the maximum, replace the drive gear, driven gear or pump body assembly. Replace the part or parts determined to be the most likely cause of the problem.


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Using a feeler gauge, measure the tip clearance between the driven gear teeth and drive gear teeth.

    Standard tip clearance:
    0.004 to 0.248 mm (0.000157 to 0.00976 in.)
    If the tip clearance is more than the maximum, replace the drive gear, driven gear or pump body assembly. Replace the part or parts determined to be the most likely cause of the problem.


    Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Using a steel straightedge and feeler gauge, measure the side clearance of both gears.

    Standard side clearance:
    0.02 to 0.05 mm (0.000788 to 0.00196 in.)
    If the side clearance is more than the maximum, replace the drive gear, driven gear or pump body assembly. Replace the part or parts determined to be the most likely cause of the problem.
    HINT:
    There are 5 different thicknesses for drive and driven gears.
    Drive and Driven Gear Thickness:
    Mark
    Specified Condition
    M
    11.690 to 11.699 mm (0.4603 to 0.4605 in.)
    N
    11.700 to 11.709 mm (0.4606 to 0.4609 in.)
    P
    11.710 to 11.720 mm (0.4610 to 0.4614 in.)
    R
    11.721 to 11.730 mm (0.4615 to 0.4618 in.)
    S
    11.731 to 11.740 mm (0.4619 to 0.4622 in.)


8. REMOVE FRONT OIL PUMP DRIVE GEAR


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly


9. REMOVE FRONT OIL PUMP DRIVEN GEAR


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly


10. REMOVE FRONT OIL PUMP OIL SEAL


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.A343E Automatic Transmission Transaxle.Automatic Transmission System (For 2Tr-Fe).Oil Pump  Disassembly
  1. Using a screwdriver, pry out the front oil pump oil seal.

    NOTICE:
    Be careful not to damage the bush or oil pump body.