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Home >> Infiniti >> 2021 >> Q50 Signature Edition, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Transfer Case (Service Information)) >> Disassembly And Assembly >> Front Final Drive >> Front Final Drive Pinion >> FRONT FINAL DRIVE PINION : Disassembly & Assembly >> Assembly

FRONT FINAL DRIVE PINION : Disassembly & Assembly: Assembly

WARNING: This page is about a different variant/trim than selected.
  1. Install pinion front and rear bearing outer races using drift (A) [SST: ST37820000 (--)].
    G04076268Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • At first, using a hammer, tap bearing outer race until it becomes flat to gear carrier.
    • Never reuse pinion front and rear bearing outer race.
  2. Temporarily install pinion height adjusting washer SYMBOL .
    GNSJSDIA0760Z-760Courtesy of NISSAN NORTH AMERICA, INC.

    When hypoid gear set has been replaced 

    When hypoid gear set has been reused 

    • Temporarily install the removed pinion height adjusting washer or same thickness washer to drive pinion.
    CAUTION:
    • Pay attention to the direction of pinion height adjusting washer. (Assemble as shown in the figure, below.)
    • Never reuse pinion rear bearing inner race.
  3. Install pinion rear bearing inner race SYMBOL to drive pinion with the drift (A) [SST: ST30032000 (J-26010-01)].
    GNSJSDIA0761Z-761Courtesy of NISSAN NORTH AMERICA, INC.
  4. Temporarily assemble removed drive pinion adjusting washer and drive pinion bearing adjusting washer or same thickness of them to drive pinion.
    G04076271Courtesy of NISSAN NORTH AMERICA, INC.
  5. Apply gear oil to pinion rear bearing, and assemble drive pinion into gear carrier.
  6. Apply gear oil to pinion front bearing, and assemble pinion front bearing inner race to drive pinion assembly.
    CAUTION: Never reuse pinion front bearing inner race.
  7. Using suitable spacer SYMBOL (commercial service tool), press the pinion front bearing inner race to drive pinion as far as drive pinion lock nut can be tightened.
    G04076272Courtesy of NISSAN NORTH AMERICA, INC.
  8. Adjust pinion bearing preload. If necessary, select the appropriate drive pinion adjusting washer and drive pinion bearing adjusting washer. Refer to FRONT FINAL DRIVE PINION : Adjustment .
  9. Using the drifts (A and B), install front oil seal as shown in the figure, below.
    G04076273Courtesy of NISSAN NORTH AMERICA, INC.

    A: Drift [SST: ST33400001 (J-26082)]

    B: Drift [SST: KV38102510 (--)]
    CAUTION:
    • Never reuse oil seal.
    • When installing, never incline oil seal.
    • Apply multi-purpose grease onto oil seal lips, and gear oil onto the circumference of oil seal.
  10. Install companion flange.
    NOTE: When reusing drive pinion, align the matching mark SYMBOL of drive pinion with the matching mark SYMBOL of companion flange, and then install companion flange SYMBOL .
    G04076251Courtesy of NISSAN NORTH AMERICA, INC.
  11. Apply anti-corrosion oil to the thread and seat of new drive pinion lock nut, and temporarily tighten drive pinion lock nut to drive pinion, using flange wrench (commercial service tool).
    G04076267Courtesy of NISSAN NORTH AMERICA, INC.

    A: Preload gauge [SST: ST3127S000 (J-25765-A)]
    CAUTION: Never reuse drive pinion lock nut.
  12. Tighten to drive pinion lock nut, while adjusting pinion bearing preload torque, using preload gauge [SST: ST3127S000 (J-25765-A)].

    Pinion bearing preload

    : Refer to FRONT FINAL DRIVE : Service Data .
    CAUTION:
    • Adjust to the lower limit of the drive pinion lock nut tightening torque first.
    • After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rotation malfunction, and other malfunctions.
  13. Install differential case assembly. Refer to FRONT FINAL DRIVE DIFFERENTIAL ASSEMBLY : Disassembly & Assembly .
    CAUTION: Never install carrier cover yet.
  14. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and companion flange runout. Refer to FRONT FINAL DRIVE DIFFERENTIAL ASSEMBLY : Adjustment  and FRONT FINAL DRIVE PINION : Adjustment .

    Recheck above items. Readjust the above description, if necessary.

  15. Check total preload torque. Refer to FRONT FINAL DRIVE DIFFERENTIAL ASSEMBLY : Adjustment .
  16. Install carrier cover. Refer to FRONT FINAL DRIVE DIFFERENTIAL ASSEMBLY : Disassembly & Assembly .
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