MAINSHAFT And Gear: Disassembly

WARNING: This page is about a different variant/trim than selected.

CAUTION:

Fix mainshaft in a vise with back plate, 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 Ring Using Tool

Courtesy of NISSAN NORTH AMERICA, INC.

Remove snap ring (1).
CAUTION: Do not reuse snap ring.

Fig 2: Removing Snap Ring Using Tool
Courtesy of NISSAN NORTH AMERICA, INC.
Remove 6th main gear (1) and mainshaft rear bearing inner race (2), with the following procedure.
1. Set a suitable tool to 6th main gear.
2. Remove mainshaft rear bearing inner race and 6th main gear, using Tool (A).
  Tool number: ST33052000 (-)
  
  Fig 3: Removing 6th Main Gear And Mainshaft Rear Bearing Inner Race Using Tool
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove 4th main gear (1) and 5th main gear (2) with the following procedure.
1. Set a suitable tool to 4th main gear.
2. Remove 5th main gear and 4th main gear, using Tool (A).
  Tool number: ST33052000 (-)
  
  Fig 4: Removing 4th And 5th Main Gear Using Tool
  Courtesy of NISSAN NORTH AMERICA, INC.
Remove mainshaft adjusting shim.
Remove 1st main gear (1), 1st-2nd synchronizer hub assembly (2), 2nd main gear (3), and 3rd main gear (4) with the following procedure.
1. Set a suitable tool to 1st main gear.
2. Remove 3rd main gear, busing, 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 Tool (A).
  Tool number: ST33052000 (-)
  
  Fig 5: Removing Main Gears And Synchronizer Hub Assembly Using Tool
  Courtesy of NISSAN NORTH AMERICA, INC.
3. Remove insert keys and 1st-2nd coupling sleeve from 1st-2nd synchronizer hub.
Remove mainshaft front bearing inner race (1) with the following procedure.
1. Set a suitable tool to mainshaft front bearing inner race.
2. Remove mainshaft front bearing inner race using Tool (A).
  Tool number: ST33052000 (-)
  
  Fig 6: Removing Mainshaft Front Bearing Inner Race Using Tool
  Courtesy of NISSAN NORTH AMERICA, INC.