Subaru Legacy (2005 year). Manual - part 645

5MT-27

MANUAL TRANSMISSION AND DIFFERENTIAL

General Description

18675AA000

DIFFERENTIAL 
SIDE OIL SEAL 
INSTALLER

Used for installing differential side retainer oil 
seal.

398507703

DUMMY COLLAR

• Used for installing input shaft holder oil seal.
• For dual-range model.

398663600

PLIERS

• Used for removing and installing input shaft 
snap ring.
• For dual-range model.

499757001

SNAP RING GUIDE

• Used for installing snap ring (OUT 25).
• For dual-range model.

ILLUSTRATION

TOOL NUMBER

DESCRIPTION

REMARKS

ST18675AA000

ST-398507703

ST-398663600

ST-499757001

5MT-28

MANUAL TRANSMISSION AND DIFFERENTIAL

General Description

2. GENERAL TOOL

899474100

EXPANDER

• Used for removing and installing snap ring.
• For dual-range model.

899580100

INSTALLER

• Used for pressing ball bearings into input 
shaft.
• For dual-range model.

399513600

INSTALLER

• Used for pressing ball bearings into input 
shaft.
• For dual-range model.

398791700

STRAIGHT PIN 
REMOVER

Used for removing and installing straight pin.

TOOL NAME

REMARKS

Circuit tester

Used for measuring resistance, voltage and ampere.

TORX

®

 BIT T70

Used for removing and installing transmission gear oil drain 
plug.

ILLUSTRATION

TOOL NUMBER

DESCRIPTION

REMARKS

ST-899474100

ST-899580100

ST-399513600

ST-398791700

5MT-29

MANUAL TRANSMISSION AND DIFFERENTIAL

Transmission Gear Oil

2. Transmission Gear Oil

A: INSPECTION

1) Park the vehicle on a level surface.
2) Turn the ignition switch to OFF, and wait until the
engine cools.
3) Remove the oil level gauge and wipe it clean.
4) Reinsert the level gauge all the way. Be sure that
the level gauge is correctly inserted and in the
proper direction.
5) Pull out the oil level gauge again, and check the
oil level. If it is below the lower level, add oil through
the oil level gauge hole to bring the level up to the
upper level.

B: REPLACEMENT

1) Pull out the oil level gauge.
2) Lift-up the vehicle.
3) Using TORX

®

 BIT T70, remove the drain plug.

Drain transmission gear oil completely.

CAUTION:
Immediately after the vehicle running, the 
transmission gear oil is very hot. Be careful not 
to burn yourself.
4) Using TORX

®

 BIT T70, tighten the transmission

gear oil drain plug after draining transmission gear
oil.

NOTE:
Use a new gasket.

Tightening torque:

70 N

⋅

m (7.1 kgf-m, 51.6 ft-lb)

5) Lower the vehicle.
6) Pour gear oil through the gauge hole.

Recommended gear oil:

GL-5 (75W-90) or equivalent

Gear oil capacity:

Single-range model

3.5 

2 (3.7 US qt, 3.1 Imp qt)

Dual-range model

4.0 

2 (4.2 US qt, 3.5 Imp qt)

7) Check the level of transmission gear oil.

CAUTION:
The level should be within the specified range 
marked on the gauge.

(A) Oil level gauge

(B) Upper level

(C) Lower level

PM-00030

(B)

(C)

(A)

(A) Drain plug

(B) Gasket

MT-00061

(A)

(B)

5MT-30

MANUAL TRANSMISSION AND DIFFERENTIAL

Manual Transmission Assembly

3. Manual Transmission As-

sembly

A: REMOVAL

1) Open the front hood fully, and support with stay.
2) Disconnect the ground cable from battery.
3) Drain transmission gear oil completely.
4) Remove the air intake chamber and air cleaner
case. <Ref. to IN(H4SO 2.0)-7, REMOVAL, Air In-
take Chamber.> <Ref. to IN(H4SO 2.0)-5, REMOV-
AL, Air Cleaner Case.>
5) Remove the air intake chamber stay.

6) Disconnect the following connectors:

(1) Neutral position switch connector
(2) Back-up light switch connector
(3) High-low switch connector (Dual-range
model)

7) Remove the snap pin and clevis pin from drive
select cable. (Dual-range model)

8) Remove the drive select cable on transmission
side. (Dual-range model)

9) Remove the starter. <Ref. to SC(H4SO 2.0)-6,
REMOVAL, Starter.>
10) Remove the operating cylinder from transmis-
sion.

11) Remove the pitching stopper.

MT-00062

MT-00063

(A) Snap pin

(B) Clevis pin

(C) Drive select cable

MT-00066

( A )

( B )

( C )

CL-00253

MT-00069