Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 436

6MT-81

Driven Gear Assembly

MANUAL TRANSMISSION AND DIFFERENTIAL

4) Attach ST1 to the 6th driven gear, then remove

the ball bearing and 5th-6th driven gear.

ST1 18723AA000

REMOVER

ST2 499877000

RACE 4-5 INSTALLER

5) Attach ST1 to the 4th driven gear, then remove

the 3rd-4th driven gear.

ST1 18723AA000

REMOVER

ST2 499877000

RACE 4-5 INSTALLER

6) Remove the driven gear key.

7) Remove the 2nd gear.

8) Remove the needle bearing and 1st-2nd sleeve.

9) Remove the outer baulk ring, 2nd synchro cone

and inner baulk ring.

(A) Ball bearing
(B) 5th-6th driven gear

(A) 3rd-4th driven gear

MT-01480

(A)

(B)

ST2

ST1

MT-01481

(A)

ST2

ST1

MT-00590

(A) Needle bearing
(B) 1st-2nd sleeve

(A) Outer baulk ring
(B) 2nd synchro cone

(C) Inner baulk ring

MT-00591

MT-00592

(A)

(B)

MT-01502

(B)

(A)

(C)

6MT-82

Driven Gear Assembly

MANUAL TRANSMISSION AND DIFFERENTIAL

10) Using the ST, remove individual parts.

ST 18754AA000 REMOVER

D: ASSEMBLY

NOTE:

When replacing the following parts, replace as a

set.

• Sleeve and hub

• Outer baulk ring, 1st synchro cone and inner

baulk ring

• Outer baulk ring, 2nd synchro cone and inner

baulk ring

1) Apply adequate transmission gear oil to the main

shaft, 1st needle bearing and 1st driven gear inner

surface.

2) Install the 1st needle bearing.

3) Attach the 1st driven gear to the driven shaft.

4) Install the inner baulk ring.

(A) 2nd bushing
(B) 1st-2nd hub

(C) Outer baulk ring
(D) 1st synchro cone

(E) Inner baulk ring

(F) 1st driven gear

(G) 1st needle bearing

(A)

(E)

(B)

(C)

(D)

(F)

(G)

MT-01715

ST

ST

MT-00595

MT-01729

MT-01730

6MT-83

Driven Gear Assembly

MANUAL TRANSMISSION AND DIFFERENTIAL

5) Match the protrusion of the 1st synchro cone to

the hole of the 1st driven gear, then install.

6) Install the outer baulk ring.

7) Install the 1st-2nd hub.
NOTE:

• Match the cut out of the 1st-2nd hub with the pro-

trusion on the outer baulk ring, then install.

• Make sure that the 1st-2nd hub is installed in the

correct direction.

8) Using the ST, install the 1st-2nd hub and 2nd

bush.

ST 18654AA000 INSTALLER
CAUTION:

Do not apply pressure in excess of 40 kN (4.0

ton, 4.4 US ton, 3.9 Imp ton).

MT-01505

MT-00599

(A) 1st-2nd hub
(B) Outer baulk ring

(C) 1st-2nd hub cut out section
(D) Protrusion of the outer baulk ring

(E) 1st driven gear

(A) 2nd bushing
(B) 1st-2nd hub

MT-01716

(E)

(D)

(C)

(A)

(B)

(E)

(A)

MT-00601

(B)

(A)

ST

6MT-84

Driven Gear Assembly

MANUAL TRANSMISSION AND DIFFERENTIAL

9) Make sure that the 1st driven gear can be turned

smoothly by hand. If it does not turn smoothly, re-

assemble.

10) Attach the 1st-2nd sleeve to the 1st-2nd hub.
NOTE:

• Make sure that the 1st-2nd sleeve is installed in

the correct direction.

• Align the 1st-2nd hub cut out section (three plac-

es) and the key grooves (three places) of shifting

insert key that are located inside the 1st-2nd

sleeve.

• Set the 1st-2nd sleeve and 1st driven gear so

that they contact each other.

11) Attach the shifting insert key to the appropriate

position of the 1st-2nd sleeve.
NOTE:

• The location angle of each shifting insert key is

120°.

• Install the shifting insert key to the key grooves

(three places) of shifting insert key that are located

inside the 1st-2nd sleeve.

12) Install the outer baulk ring.

13) Install the 2nd synchro cone.

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

(C) 1st driven gear side

(A) 1st-2nd hub
(B) 1st-2nd sleeve

MT-00603

(B)

(A)

(C)

(B)

MT-01731

(A)

(B)

(A) Shifting insert key
(B) 1st-2nd hub

(C) 1st-2nd sleeve

MT-01732

(A)

(B)

(C)

(A)

(A)

MT-01733

MT-01506