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Home >> Infiniti >> 2002 >> I35 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Overhaul - Re4F04 Series >> Transaxle Disassembly

Transaxle Disassembly

  1. Remove drain plug and drain ATF. Remove torque converter. Check torque converter one-way clutch. See TORQUE CONVERTER  under COMPONENT TESTS. Remove dipstick and dipstick tube. Remove oil cooler tube. Place manual lever in "P" position. Remove PNP switch. Remove oil pan and gasket. See Fig 4. DO NOT reuse oil pan bolts.
  2. Remove valve body assembly bolts. See Fig 2. Remove clip from wire harness terminal body. Push terminal body into transaxle case and remove wire harness. Remove manual valve from valve body assembly. Remove return spring from servo release accumulator piston. Using compressed air, remove servo release accumulator piston. See Fig 1 and Fig 3 .
    Fig 1: Identifying Hydraulic Fluid Passages
    G99E04670Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Removing & Installing Valve Body Assembly
    G93J23589Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Remove "O" rings from servo release accumulator piston. Using compressed air, remove N-D accumulator piston and return spring. See Fig 1 and Fig 3 . Remove "O" rings from N-D accumulator piston. Check accumulator pistons and contact surface of transaxle case for damage. Check accumulator return springs free length and diameter. See ACCUMULATOR SPRING SPECIFICATIONS  table.
    ACCUMULATOR SPRING SPECIFICATIONS

    Application In. (mm)
    N-D Accumulator Spring
    Free Length 1.713 (43.50)
    Outer Diameter 1.102 (28.00)
    Servo Release Accumulator Spring
    Free Length 2.067 (52.50)
    Outer Diameter .803 (20.40)
    Fig 3: Removing N-D & Servo Release Accumulator Pistons
    G93J23415Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 4: Exploded View Of Transaxle Case Components
    G96G30763Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Remove (4) lip seals from transaxle case. See Fig 5. Remove low and reverse oil tube and sleeve. Remove converter housing bolts. Remove converter housing by tapping housing with soft hammer. Remove "O" ring from differential oil port. See Fig 6.
  5. Remove differential assembly from transaxle case. Using appropriate puller, remove differential side bearing outer race from transaxle case and converter housing. Remove differential side bearing adjustment shim from transaxle case.
  6. Remove oil seal from converter housing, being careful not to damage converter housing. Remove oil tube from converter housing. Remove "O" ring from input shaft. See Fig 7. Remove oil pump assembly bolts and remove oil pump assembly, baffle and gasket from transaxle case. Remove thrust washer and bearing race from oil pump assembly. Loosen anchor end pin lock nut, then back off anchor end pin.
  7. Remove brake band and strut from transaxle case. When removing brake band, insert wire clip into brake band ends for support. To prevent brake lining from cracking or peeling, DO NOT stretch brake band. Check brake band facing for damage, cracks, wear or burns. Remove high clutch (with input shaft assembly) and reverse clutch. Remove high clutch from reverse clutch. See Fig 11.
  8. Remove needle bearing from high clutch drum. Remove high clutch hub and front sun gear. Remove needle bearing from high clutch hub. Remove front sun gear and needle bearing from high clutch drum. Remove bearing race from front sun gear. Check all components for damage or wear.
  9. Remove needle bearing from transaxle case. Apply compressed air to transaxle case to check low and reverse brake operation. See Fig 8. Remove snap ring. Using a bent wire, remove low one-way clutch from transaxle case. See Fig 9. Remove snap ring and front planetary carrier with low-reverse brake piston and spring retainer.
  10. Remove low and reverse brake spring retainer. Ensure low one-way clutch rotates counterclockwise only. See Fig 10. Remove needle bearing, low and reverse brake piston and spring retainer from front planetary carrier. See Fig 8. Check all components for damage or wear.
  11. Remove rear planetary carrier from transaxle case. Remove rear sun gear from rear planetary carrier. Note direction of rear sun gear prior to removal. Remove needle bearings from rear planetary carrier. Check all components for damage or wear.
  12. Using a feeler gauge, check clearance between pinion washer and appropriate planetary carrier. See Fig 12. Clearance between pinion washer and planetary carrier should be .008-.028" (.20-.70 mm), with service limit of .031" (.80 mm). If clearance is not as specified, replace appropriate planetary carrier.
    13. NOTE: Output shaft assembly may remain attached to side cover. DO NOT drop output shaft assembly. DO NOT reuse "A" side cover bolts.
  13. Remove rear internal gear and forward clutch hub from transaxle case. Remove overrun clutch hub from transaxle case. Remove needle bearing from overrun clutch hub and check bearing for damage or wear. Remove forward clutch assembly from transaxle case. Remove needle bearing from transaxle case. Remove side cover bolts and side cover. See Fig 13.
    14. NOTE: DO NOT reuse idler gear lock nut.
  14. Tap side cover with soft hammer to remove from output shaft (if necessary). Remove adjusting shim. Remove needle bearing. Set manual lever to "P" position to lock idler gear. Using a hammer and pin punch, unlock idler gear lock nut. Remove idler gear lock nut.
  15. Using appropriate puller, remove idler gear from transaxle case. Remove reduction pinion gear and adjusting shim from reduction pinion gear. Remove return spring from parking shaft. Remove parking shaft and parking pawl from transaxle case. Check parking shaft and pawl for wear or damage.
  16. Note direction of parking actuator support and remove actuator support from transaxle case. Inspect actuator support for wear or damage. Using a hammer and screwdriver, remove side oil seal from transaxle case. Remove manual shaft components from transaxle case. See MANUAL SHAFT ASSEMBLY  under COMPONENT DISASSEMBLY & REASSEMBLY.
Fig 5: Locating Lip Seals
G99G04671Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 6: Locating Differential Oil Port "O" Ring
G00047160Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 7: Exploded View Of Torque Converter Housing & Differential Components
G00016779Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 8: Checking Low-Reverse Brake Operation
G93F23593Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 9: Removing Low-One Way Clutch
G93G23594Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 10: Checking Low One-Way Clutch Operation
G99D08347Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 11: Exploded View Of Forward Clutch, High Clutch, Low-Reverse Brake, Overrun Clutch & Reverse Clutch Assemblies
G93E23592Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 12: Measuring Pinion Gear Clearance (Typical)
G99F08348Courtesy of NISSAN MOTOR CO., U.S.A.
Fig 13: Identifying Side Cover Bolt Locations
G93H23595Courtesy of NISSAN MOTOR CO., U.S.A.
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