Main Shaft Assembly for Single-Range: Disassembly

1. Put the vinyl tape around main shaft splines to protect oil seal from damage. Then pull out the oil seal and needle bearing by hand.
2. Remove the lock nut from transmission main shaft assembly for single range.
   NOTE: Unlock the caulking before removing lock nut.

   ST1 498937000 TRANSMISSION HOLDER

   ST2 499987003 SOCKET WRENCH (35)

   Fig 1: Removing Lock Nut From Transmission Main Shaft Assembly For Single Range

   Courtesy of SUBARU OF AMERICA, INC.
3. Remove the 5th-Rev sleeve & hub assembly, baulk ring, 5th drive gear & needle bearing.
   Fig 2: Removing 5th-Rev Sleeve & Hub Assembly, Baulk Ring, 5th Drive Gear & Needle Bearing

   Courtesy of SUBARU OF AMERICA, INC.
4. Remove the snap ring and synchro cone stopper from 5th-Rev sleeve & hub assembly.
   Fig 3: Removing Snap Ring And Synchro Cone Stopper From 5th-Rev Sleeve & Hub Assembly

   Courtesy of SUBARU OF AMERICA, INC.
5. Using the ST1, ST2 and a press, remove the ball bearing, synchro cone and baulk ring (Rev).
   NOTE:

   • When replacing the sleeve & hub with new ones, replace them as a set.
   • Do not disassemble the sleeve & hub, because the aligning position is specified.
   • If it is necessary to disassemble, mark the engaging points on the splines beforehand.
   • Do not reuse the ball bearing.

   ST1 499757002 INSTALLER

   ST2 498077400 SYNCHRO CONE REMOVER

   Fig 4: Removing Ball Bearing, Synchro Cone And Baulk Ring Using ST1, ST2 And A Press

   Courtesy of SUBARU OF AMERICA, INC.
6. Using the ST1 and ST2, remove the rest of parts.

ST1 899864100 REMOVER

ST2 899714110 REMOVER

Fig 5: Removing Rest Of Parts Using ST1 And ST2

Courtesy of SUBARU OF AMERICA, INC.