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Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 443

6MT-109

Shifter Fork and Rod

MANUAL TRANSMISSION AND DIFFERENTIAL

3) Remove the interlock arm using the ST.

ST 398791700

REMOVER

D: ASSEMBLY

1. REVERSE SHIFTER FORK

1) Using the ST, install the reverse fork.

ST 398791700

REMOVER

NOTE:

• Confirm that the reverse fork and rod are in-

stalled in the proper direction.

• Use a new straight pin.

2) Using the ST, install the reverse arm.

ST 398791700

REMOVER

NOTE:

• Confirm that the reverse arm and rod are in-

stalled in the proper direction.

• Use a new straight pin.

2. 1ST-2ND, 3RD-4TH SHIFTER FORK

1) Using the ST, install the 1st-2nd shifter fork.

ST 398791700

REMOVER

NOTE:

• Make sure that the 1st-2nd shifter fork and rod

are installed in the correct direction.

• Use a new straight pin.

2) Using the ST, install the 1st-2nd shifter arm.

ST 398791700

REMOVER

NOTE:

• Make sure that the 1st-2nd shifter arm and fork

are installed in the correct direction.

(A) Interlock arm

(A) Reverse fork
(B) Reverse rod

MT-00690

(A)

MT-00691

(C)

(B)

(A)

(A) Reverse arm
(B) Reverse rod

(A) 1st-2nd shifter fork
(B) 1st-2nd shifter rod

MT-00692

(C)

(B)

(A)

MT-00693

(C)

(B)

(A)

6MT-110

Shifter Fork and Rod

MANUAL TRANSMISSION AND DIFFERENTIAL

• Use a new straight pin.

3) Using the ST, install the 3rd-4th shifter arm.

ST 398791700

REMOVER

NOTE:

• Make sure that the 3rd-4th shifter arm and rod

are installed in the correct direction.

• Use a new straight pin.

4) Attach the 3rd-4th fork rod to the 1st-2nd shifter

arm.

5) Using the ST, install the 3rd-4th shifter fork.

ST 398791700

REMOVER

NOTE:

• Make sure that the 3rd-4th shifter fork is installed

in the correct direction.

• Use a new straight pin.

3. 5TH-6TH SHIFTER FORK

1) Using the ST, install the 5th-6th shifter arm.

ST 398791700

REMOVER

NOTE:

• Make sure that the 5th-6th shifter arm and rod

are installed in the correct direction.

• Use a new straight pin.

(A) 1st-2nd shifter fork
(B) 1st-2nd shifter arm

(A) 3rd-4th shifter rod
(B) 3rd-4th shifter arm

MT-00694

(C)

(B)

(A)

MT-00695

(C)

(B)

(A)

MT-00696

(A) 3rd-4th shifter fork
(B) Straight pin

(A) 5th-6th shifter arm
(B) 5th-6th shifter rod

MT-01737

(B)

(A)

MT-00698

(C)

(B)

(A)

6MT-111

Shifter Fork and Rod

MANUAL TRANSMISSION AND DIFFERENTIAL

2) Using the ST, install the 5th-6th shifter fork.

ST 398791700

REMOVER

NOTE:

• Check that the 5th-6th shifter fork and arm are in-

stalled.

• Use a new straight pin.

4. SHIFTER ARM SHAFT

Using the ST, install the selector arm.

ST 398791700

REMOVER

NOTE:

• Confirm that the selector arm and rod are in-

stalled in the proper direction.

• Use a new straight pin.

5. STRIKING ROD

1) Using the ST, install the reverse interlock arm

and interlock arm.

ST 398791700

REMOVER

NOTE:

• Confirm that the reverse interlock arm and rod

are installed in the proper direction.

• Confirm that the interlock arm and rod are in-

stalled in the proper direction.

• Use a new straight pin.

2) Attach the reverse interlock block and interlock

block to the striking rod.
NOTE:

Confirm that the reverse interlock block and inter-

lock block are installed in the proper direction.

E: INSPECTION

1) Check the shift shaft and shift rod for damage.

Replace if damaged.

2) Repair or replace the gearshift mechanism if ex-

cessively worn, bent or defective in any way.

(A) 5th-6th shifter fork
(B) 5th-6th shifter arm

(A) Selector rod
(B) Selector arm

MT-00699

(C)

(B)

(A)

MT-01096

(B)

(A)

(C)

(A) Reverse interlock arm
(B) Interlock arm

(A) Reverse interlock block
(B) Interlock block

MT-00701

(C)

(B)

(A)

MT-00688

(A)

(B)

6MT-112

Shifter Fork and Rod

MANUAL TRANSMISSION AND DIFFERENTIAL

F: ADJUSTMENT

1. 1ST-2ND FORK ROD SELECTION

NOTE:

In the following conditions, perform the procedures

below.

• Replacement of the 1st and 2nd driven gear

• 1st and 2nd synchro ring assembly replacement

• Adapter plate replacement

• Driven shaft replacement

• 1st-2nd hub and sleeve assembly replacement.

1) Insert the drive pinion assembly into the adapter

plate.
NOTE:

Confirm that the thrust bearing outer race has not

been removed and the drive pinion is not lifted.

2) Set the height gauge to the adapter plate. Lower

the height gauge indicator to the mating surface of

the adapter plate and case, and set to zero points.

ST 18853AA000 HEIGHT GAUGE

NOTE:

• The adapter plate will be the base point for the

measurement. Use a scraper to remove any gasket

material remaining on the end face.

• During measurement, do not place the height

gauge in the shaded area shown in the figure.

3) Select the main shaft snap ring. <Ref. to 6MT-

77, ADJUSTMENT, Main Shaft Assembly.>

4) Measure “B1” and “B2” as shown in the figure.

5) Shift down the 1st-2nd sleeve all the way to the

1st driven gear side, and measure “B1”.

NOTE:

• Set the height gauge indicator near the measure-

ment target, and lock dial (1) as shown in the figure.

Turn dial (2), and set the indicator to the 1st side

end surface of the sleeve.

• Turn approximately 72° at a time, and measure

the sleeve in 5 locations. Round down the 2 highest

and 2 lowest measurement values. The remaining

center value is used as the measurement value.

MT-00582

MT-00583

(A) 1st driven gear
(B) 1st-2nd sleeve

MT-00979

MT-00702

(A)

(B)

MT-00585

(2)

(1)

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