Main Shaft Assembly: Assembly

WARNING: This page is about a different car, the 2021 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

When the sleeve & hub assemblies have been disassembled, reassemble by aligning the alignment marks.
NOTE: Position the open ends of the spring 120° apart.

Courtesy of SUBARU OF AMERICA, INC.
Install the 3rd drive gear, outer baulk ring, 3rd synchro cone, inner baulk ring, 3rd needle bearing, and sleeve & hub assembly.
NOTE: Align the groove of the baulk ring with the 3rd-4th shifting insert.

Courtesy of SUBARU OF AMERICA, INC.
Install the 4th needle bearing race using ST1, ST2 and a press.
CAUTION: Do not apply a load in excess of 10 kN (1 ton, 1.1 US ton, 1.0 Imp ton).

Preparation tool:

ST1: REMOVER (899714110)

ST2: RACE 4-5 INSTALLER (499877000)

Courtesy of SUBARU OF AMERICA, INC.
Install the 4th baulk ring, 4th needle bearing, 4th drive gear, and 4th gear thrust washer to the main shaft.
CAUTION: Make sure the thrust washer is facing the correct direction.

NOTE: Align the 4th baulk ring and hub & sleeve assembly with the key groove.

Courtesy of SUBARU OF AMERICA, INC.
Press-fit a new double ball bearing using ST1, ST2 and a press.
CAUTION:
- Do not apply a load in excess of 10 kN (1 ton, 1.1 US ton, 1.0 Imp ton).
- Install the snap ring side of the double ball bearing facing the 5th drive gear side.
Preparation tool:

ST1: REMOVER (899714110)

ST2: RACE 4-5 INSTALLER (499877000)

Courtesy of SUBARU OF AMERICA, INC.
Using the ST (REMOVER) and ST (RACE 4-5 INSTALLER), install the 5th gear thrust washer and 5th needle bearing race onto the rear section of the main shaft.
CAUTION:
- Do not apply a load in excess of 10 kN (1 ton, 1.1 US ton, 1.0 Imp ton).
- Make sure the thrust washer is facing the correct direction.
Courtesy of SUBARU OF AMERICA, INC.

Install the rest of the parts to the rear section of the main shaft.

CAUTION:

Install the baulk lever so that the concave side faces toward the 5th hub.

Courtesy of SUBARU OF AMERICA, INC.

Align the protruded section of the 5th baulk ring between the baulk levers.

Courtesy of SUBARU OF AMERICA, INC.

Install a new lock washer.
CAUTION: Make sure the lock washer is facing the correct direction.
Tighten a new lock nut using ST (SOCKET WRENCH (35)) and ST (TRANSMISSION HOLDER).
Tightening torque:

120 N.m (12.2 kgf-m, 88.5 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Crimp lock nuts in two locations after tightening.
CAUTION: When crimping the lock nut, be careful not to crack it.