Subaru Legacy (2005 year). Manual - part 651

5MT-51

MANUAL TRANSMISSION AND DIFFERENTIAL

Center Differential

12.Center Differential

A: REMOVAL

1) Remove the manual transmission assembly
from vehicle. <Ref. to 5MT-30, REMOVAL, Manual
Transmission Assembly.>
2) Remove the transfer case with extension case
assembly. <Ref. to 5MT-43, REMOVAL, Transfer
Case and Extension Case Assembly.>
3) Remove the extension case assembly. <Ref. to
5MT-43, REMOVAL, Transfer Case and Extension
Case Assembly.>
4) Remove the transfer driven gear. <Ref. to 5MT-
49, REMOVAL, Transfer Driven Gear.>
5) Remove the center differential.

B: INSTALLATION

1) Install the center differential into transfer case.
2) Install the transfer driven gear. <Ref. to 5MT-49,
INSTALLATION, Transfer Driven Gear.>
3) Install the extension case assembly. <Ref. to
5MT-43, INSTALLATION, Transfer Case and Ex-
tension Case Assembly.>
4) Install the transfer case with extension case as-
sembly. <Ref. to 5MT-43, INSTALLATION, Trans-
fer Case and Extension Case Assembly.>
5) Install the back-up light switch and neutral posi-
tion switch. <Ref. to 5MT-40, INSTALLATION,
Switches and Harness.>
6) Install the manual transmission assembly into
vehicle. <Ref. to 5MT-32, INSTALLATION, Manual
Transmission Assembly.>

C: DISASSEMBLY

NOTE:
Center differential is a non-disassembled part
which should not be disassembled.
Remove the ball bearing using ST.

NOTE:
Do not reuse the ball bearing.
ST

498077300

CENTER DIFFERENTIAL 
BEARING REMOVER

D: ASSEMBLY

Install the ball bearing into center differential as-
sembly.

NOTE:
Do not apply pressure in excess of 10 kN (1 ton, 1.1
US ton, 1.0 Imp ton).

E: INSPECTION

1) Bearings
Replace the bearing in following cases:
• In case of broken or rusty bearings
• In case of worn or damaged bearings
• When the bearings fail to turn smoothly or emit
noise in rotation after gear oil lubrication.
• When bearings have other defects.
2) Center differential
Replace the center differential case assembly if
worn or damaged.

MT-00147

ST

(A) Ball bearing

MT-00148

(A)

5MT-52

MANUAL TRANSMISSION AND DIFFERENTIAL

Reverse Check Sleeve

13.Reverse Check Sleeve

A: REMOVAL

1) Remove the manual transmission assembly
from vehicle. <Ref. to 5MT-30, REMOVAL, Manual
Transmission Assembly.>
2) Remove the transfer case with extension case
assembly. <Ref. to 5MT-43, REMOVAL, Transfer
Case and Extension Case Assembly.>
3) Remove the shifter arm.
4) Remove the plug, spring, washer and reverse
check ball.

5) Remove the reverse check sleeve.

B: INSTALLATION

1) Install the reverse check sleeve.

Tightening torque:

6.4 N

⋅

m (0.65 kgf-m, 4.7 ft-lb)

2) Install the reverse check ball, spring, washer and
plug to transfer case.

Tightening torque:

10 N

⋅

m (1.0 kgf-m, 7.4 ft-lb)

3) Install the shifter arm to transfer case assembly.
4) Install the transfer case with extension case as-
sembly. <Ref. to 5MT-43, INSTALLATION, Trans-
fer Case and Extension Case Assembly.>
5) Install the manual transmission assembly into
vehicle. <Ref. to 5MT-32, INSTALLATION, Manual
Transmission Assembly.>

C: DISASSEMBLY

1) Cover the reverse check sleeve with a rag, and
remove the snap ring using a screwdriver.

NOTE:
Replace the snap ring with a new one if it is de-
formed or reactive force is weakened.

MT-00149

MT-00150

MT-00150

(A) Snap ring

MT-00149

MT-00153

(A)

5MT-53

MANUAL TRANSMISSION AND DIFFERENTIAL

Reverse Check Sleeve

2) Remove the reverse check plate, reverse check
spring, reverse check cam, return spring (5th-Rev),
reverse accent shaft, return spring cap and return
spring (1st-2nd).

3) Remove the O-ring.

NOTE:
• Visually check the O-ring. Replace if defective.
• Be careful not to break adjustment shim placed
between reverse check sleeve assembly and case.

D: ASSEMBLY

1) Install the return spring (1st-2nd), return spring
cap, reverse accent shaft, reverse check cam, re-
turn spring (5th-Rev.) and reverse check spring
onto reverse check sleeve.

NOTE:
Be sure to position the bent section of reverse
check spring in the groove in check cam.

2) Hook the bent section of reverse check spring
over reverse check plate.
3) Rotate the cam so that the protrusion of reverse
check cam is at the opening in plate.
4) With cam held in that position, install the reverse
check plate onto reverse check sleeve and hold
with snap ring.
5) Position the O-ring in the groove in sleeve.

(A) Reverse check plate

(B) Reverse check spring

(C) Return spring (5th-Rev)

(D) Reverse check cam

(E) Reverse accent shaft

(F) Return spring cap

(G) Return spring (1st-2nd)

MT-00154

(B)

(C)

(D)

(E)

(F)

(G)

(A)

(A) Reverse check plate

(B) Reverse check spring

(C) Return spring (5th-Rev)

(D) Reverse check cam

(E) Reverse accent shaft

(F) Return spring cap

(G) Return spring (1st-2nd)

MT-00154

(B)

(C)

(D)

(E)

(F)

(G)

(A)

5MT-54

MANUAL TRANSMISSION AND DIFFERENTIAL

Reverse Check Sleeve

E: INSPECTION

• Make sure the cutout of reverse accent shaft is
aligned with the opening in reverse check sleeve.
• Check the cam for smooth rotation by turning
with hand.
• Make sure the cam and shaft move all the way
toward plate and release.
If the cam does not return properly, replace the re-
verse check spring. If the shaft does not return,
check for scratches on the inner surface of sleeve.
If the sleeve is in good order, replace the spring.

• Select a suitable reverse accent shaft and re-
verse check plate. <Ref. to 5MT-54, ADJUST-
MENT, Reverse Check Sleeve.>

F: ADJUSTMENT

1. NEUTRAL POSITION ADJUSTMENT

1) Shift the gear into 3rd gear position.
2) Shifter arm turns lightly toward the 1st/2nd gear
side but heavily toward the reverse gear side be-
cause of the function of return spring, until arm con-
tacts the stopper.
3) Make adjustment so that the heavy stroke (re-
verse side) is a little more than the light stroke (1st/
2nd side).
4) To adjust, remove the bolts holding reverse
check sleeve assembly to the case, move the
sleeve assembly outward, and place the adjust-
ment shim between sleeve assembly and case to
adjust the clearance.

CAUTION:
Be careful not to break O-ring when placing 
shim(s).

NOTE:
• When the shim is removed, the neutral position
will move closer to reverse; when the shim is add-
ed, the neutral position will move closer to 1st gear.

• If the shims alone cannot adjust the clearance,
replace the reverse accent shaft and re-adjust.

2. REVERSE CHECK PLATE ADJUST-
MENT

1) Shift the shifter arm to “5th” and then to reverse
to see if reverse check mechanism operates prop-
erly.
2) Also check to see if the arm returns to neutral
when released from the reverse position. If the arm
does not return properly, replace the reverse check
plate.

(A) Snap ring

(B) Reverse check plate

(C) Checking spring

(D) Check cam

MT-00156

(A)

(D)

(B)

(C)

Adjusting shim

Part Number

Thickness mm (in)

32190AA000

0.15 (0.0059)

32190AA010

0.30 (0.0118)

Reverse accent shaft

Part No.

Mark

Remarks

32188AA130

S

Neutral position is 
closer to 1st.

32188AA140

T

Standard

32188AA150

U

Neutral position is 
closer to reverse gear.

Reverse check plate

Part Number

(A): 

No.

Angle 

θ

Remarks

32189AA000

0

28

°

Arm stops closer to 
5th gear.

32189AA010

1

31

°

Arm stops closer to 
5th gear.

32189AA020

2

34

°

Arm stops in the cen-
ter.

32189AA030

3

37

°

Arm stops closer to 
reverse gear.

32189AA040

4

40

°

Arm stops closer to 
reverse gear.

MT-00157

(A)