FixVault

Input Shaft Disassemble

Tools Required

    Fig 1: Removing Bearing Retaining Ring
    GM895132Courtesy of GENERAL MOTORS CORP.
  1. Mount the input shaft in a vise with soft jaws.
  2. Remove the bearing retaining ring and discard.
  3. Fig 2: Removing Input Shaft Bearing
    GM895134Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The input shaft bearing can not be reused after removal. It must be replaced.
    IMPORTANT: Loosen the 87 92 152  until the tool sits flush on the 4th drive gear before tightening the tool onto the bearing. See Special Tools .
  4. Remove the input shaft bearing using the 87 92 152  and the 87 91 642  . See Special Tools .
  5. Fig 3: Identifying 4th Drive Gear
    GM1619487Courtesy of GENERAL MOTORS CORP.
  6. Remove the 4th drive gear, 4th gear leaf springs, 4th gear blocking ring, and 4th gear bearing.
  7. Fig 4: View Of Synchronizer Hub Detent
    GM895153Courtesy of GENERAL MOTORS CORP.
    CAUTION: The synchronizer detent inserts may be forced out by spring pressure and could injure someone. To help avoid injury, always cover the synchronizer hub detent openings during disassembly.
  8. Move the 3rd/4th gear synchronizer sleeve down, toward third gear, far enough to remove the synchronizer detent inserts with a small screwdriver.
  9. Fig 5: View Of 3rd/4th Gear Synchronizer Sleeve
    GM895152Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Note the orientation of the 3rd/4th gear synchronizer sleeve. It needs to be installed in the same orientation.
  10. Remove the 3rd/4th gear synchronizer sleeve.
  11. Fig 6: View Of 3rd/4th Synchronizer Insert Pins & Springs
    GM895140Courtesy of GENERAL MOTORS CORP.
  12. Remove the 3rd/4th gear synchronizer insert pins and springs.
  13. Fig 7: Removing 3rd/4th Gear Synchronizer Hub
    GM1227199Courtesy of GENERAL MOTORS CORP.
  14. Remove the 3rd/4th gear synchronizer hub retaining ring and washer. Remove the 3rd/4th synchronizer hub using the 87 91 287  under the 3rd gear. See Special Tools .
  15. Fig 8: View Of 3rd Gear Blocking Ring, Drive Gear & Gear Bearing Assembly
    GM1616927Courtesy of GENERAL MOTORS CORP.
  16. Remove the 3rd gear blocking ring, 3rd gear leaf springs, 3rd drive gear, and 3rd gear bearing assembly.
  17. Fig 9: Pressing Off Input Shaft Bearing
    GM895146Courtesy of GENERAL MOTORS CORP.
  18. Press off the input shaft bearing, next to 1st drive gear, using the 87 91 121  and the 87 90 636  . See Special Tools .