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Home >> Nissan-Datsun >> 2012 >> Cube Base >> Repair and Diagnosis >> Transmission >> Manual Transmission >> Unit Disassembly And Assembly >> MAINSHAFT And Gear >> Disassembly

MAINSHAFT And Gear: Disassembly

CAUTION:
  • Fix mainshaft in a vise with backplate, and then remove gears and snap rings.
  • For removal of snap ring, set snap ring pliers and flat pliers at both sides of snap ring. While expanding snap ring with snap ring pliers, move snap ring with flat pliers.
  • Disassemble gear components putting direction marks on the parts that never affect any functions.
Fig 1: Removing Snap Rings
G04926441Courtesy of NISSAN NORTH AMERICA, INC.
  1. Remove snap ring (1).
    Fig 2: Removing Snap Ring
    G04926458Courtesy of NISSAN NORTH AMERICA, INC.
  2. Remove 6th main gear (1) and mainshaft rear bearing inner race (2) according to the following procedures.
    1. Set a puller [Commercial service tool] to 6th main gear.
    2. Remove mainshaft rear bearing inner race and 6th main gear, using the drift (A) [SST: ST33052000 (-)].
      Fig 3: Removing Mainshaft Rear Bearing Inner Race And 6th Main Gear
      G04926459Courtesy of NISSAN NORTH AMERICA, INC.
  3. Remove 4th main gear (1) and 5th main gear (2) according to the following procedures.
    1. Set a puller [Commercial service tool] to 4th main gear.
    2. Remove 5th main gear and 4th main gear, using the drift (A) [SST: ST33052000 (-)].
  4. Remove mainshaft adjusting shim.
    Fig 4: Removing 5th And 4th Main Gear
    G04926460Courtesy of NISSAN NORTH AMERICA, INC.
  5. Remove 1st main gear (1), 1st-2nd synchronizer hub assembly (2), 2nd main gear (3), and 3rd main gear (4) according to the following procedures.
    1. Set a puller [Commercial service tool] to 1st main gear.
    2. Remove 3rd main gear, bushing, 2nd main gear, 2nd inner baulk ring, 2nd synchronizer cone, 2nd outer baulk ring, 1st-2nd synchronizer hub assembly, 1st outer baulk ring, 1st synchronizer cone, 1st inner baulk ring, and 1st main gear, using the drift (A) [SST: ST33052000 (-)].
    3. Remove insert keys and 1st-2nd coupling sleeve from 1st-2nd synchronizer hub.
  6. Remove mainshaft front bearing inner race (1) according to the following procedures.
    Fig 5: Removing Mainshaft Front Bearing Inner Race
    G04926461Courtesy of NISSAN NORTH AMERICA, INC.
    1. Set a puller [Commercial service tool] to mainshaft front bearing inner race.
    2. Remove mainshaft front bearing inner race, using the drift (A) [SST: ST33052000 (-)].
      Fig 6: Removing Mainshaft Front Bearing Inner Race Using Drift
      G04926462Courtesy of NISSAN NORTH AMERICA, INC.
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