Manual Transmission Assembly: Installation

WARNING: This page is about a different car, the 2020 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

Install the release bearing & lever. Refer to CLUTCH SYSTEM>Release Bearing and Lever>INSTALLATION .
Replace the differential side retainer oil seal with a new part. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>DIFFERENTIAL SIDE RETAINER OIL SEAL>REPLACEMENT .
CAUTION: Be sure to replace the oil seal after removing the front drive shaft.

NOTE: When a new oil seal has been installed, replacement is not required.
Strike and bend the transmission hanger of transmission rear with a rubber hammer etc. so that it gets in contact with the transmission case.
CAUTION: Do not apply excessive load or impact to the transmission case.

Courtesy of SUBARU OF AMERICA, INC.
Install the transmission cushion rubber to the transmission, and tighten the bolt (A).
Install the transmission cushion rubber to the center crossmember, and temporarily tighten the nut (B).
Tightening torque:

Bolt (A)

35 N.m (3.6 kgf-m, 25.8 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the transmission assembly onto the engine.
1. Lift up the transmission gradually using a transmission jack.
2. Engage at the spline section.
CAUTION: Be careful not to hit the main shaft against the clutch cover.
While raising the transmission jack, loosen the turnbuckle of the ST (ENGINE SUPPORT), and set the engine unit to the original position.
Install the front crossmember and rear crossmember.
Tighten the transmission cushion rubber mounting nut.
Tightening torque:

T1: 75 N.m (7.6 kgf-m, 55.3 ft-lb)

T2: 140 N.m (14.3 kgf-m, 103.3 ft-lb)

T3: 35 N.m (3.6 kgf-m, 25.8 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Take out the transmission jack.
Tighten the bolts and nuts which hold the lower side of transmission to the engine.
Tightening torque:

50 N.m (5.1 kgf-m, 36.9 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Lower the vehicle.
Install the starter. Refer to STARTING/CHARGING SYSTEMS (H4DO (EXCEPT FOR HEV))>STARTER>INSTALLATION .
Tighten the bolts which hold the upper side of the transmission to the engine.
Tightening torque:

50 N.m (5.1 kgf-m, 36.9 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Remove ST (ENGINE SUPPORT BRACKET and ST ENGINE SUPPORT).
Install the engine ground terminals.
Tightening torque:

19 N.m (1.9 kgf-m, 14.0 ft-lb)
Install the engine harness stay and MT docking connector together as a unit.
Tightening torque:

19 N.m (1.9 kgf-m, 14.0 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the pitching stopper.
Tightening torque:

T1: 50 N.m (5.1 kgf-m, 36.9 ft-lb)

T2: 58 N.m (5.9 kgf-m, 42.8 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Lift up the vehicle.
Set the ST (OIL SEAL PROTECTOR) to the differential side retainer.
Replace the circlip of the front drive shaft with a new part.
Install the front drive shaft and remove ST.
Preparation tool:

ST: OIL SEAL PROTECTOR (28399SA010)

Courtesy of SUBARU OF AMERICA, INC.
Replace the flange nut with a new part, and install the ball joint to the front arm.
Tightening torque:

100 N.m (10.2 kgf-m, 73.8 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Replace the flange nut with a new part, and install the stabilizer link.
Tightening torque:

60 N.m (6.1 kgf-m, 44.3 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.

Attach the gear shift rod and stay.

Replace the self-locking nut with a new part, and install the gear shift rod.

Tightening torque:

12 N.m (1.2 kgf-m, 8.9 ft-lb)

G13604194

Courtesy of SUBARU OF AMERICA, INC.

Replace the self-locking nut with a new part, and install the stay.
Tightening torque:

18 N.m (1.8 kgf-m, 13.3 ft-lb)

G13604195

Courtesy of SUBARU OF AMERICA, INC.

Install the propeller shaft. Refer to DRIVE SHAFT SYSTEM>PROPELLER SHAFT>INSTALLATION .
Install the hanger bracket.
Tightening torque:

23 N.m (2.3 kgf-m, 17.0 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the center exhaust cover.
Tightening torque:

18 N.m (1.8 kgf-m, 13.3 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the rear exhaust pipe. Refer to EXHAUST (H4DO (EXCEPT FOR HEV))>REAR EXHAUST PIPE>INSTALLATION .
Install the front exhaust pipe. Refer to EXHAUST (H4DO (EXCEPT FOR HEV))>FRONT EXHAUST PIPE>INSTALLATION .
Install the crossmember support - rear.
Tightening torque:

70 N.m (7.1 kgf-m, 51.6 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Lower the vehicle.
Using the ST, tighten the strut mount self-locking nut.
Special tool:

ST: STRUT MOUNT SOCKET (20399AG000)

Tightening torque:

55 N.m (5.6 kgf-m, 40.6 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the operating cylinder.
Tightening torque:

37 N.m (3.8 kgf-m, 27.3 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the engine hanger rear.
Tightening torque:

36 N.m (3.7 kgf-m, 26.6 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the transmission radio ground cord terminal.
Tightening torque:

32.3 N.m (3.3 kgf-m, 23.8 ft-lb)

Courtesy of SUBARU OF AMERICA, INC.
Install the air breather hose.

Courtesy of SUBARU OF AMERICA, INC.
Install the coupling harness.

Courtesy of SUBARU OF AMERICA, INC.
Pour in transmission gear oil and check the oil level. Refer to MANUAL TRANSMISSION AND DIFFERENTIAL (5MT)>TRANSMISSION GEAR OIL .
Install the air intake boot. Refer to INTAKE (INDUCTION) (H4DO (EXCEPT FOR HEV))>AIR INTAKE BOOT>INSTALLATION .
Install the front tires. Refer to WHEEL AND TIRE SYSTEM>TIRE AND WHEEL>INSTALLATION .
Connect the ground terminal to 12V engine restart battery sensor. Refer to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>BATTERY .
Inspect the wheel alignment and adjust if necessary. Refer to FRONT SUSPENSION>WHEEL ALIGNMENT .