Subaru Legacy IV (2008 year). Manual — part 814
6MT-69
Main Shaft Assembly
MANUAL TRANSMISSION AND DIFFERENTIAL
5) Set the ST1 to the 6th drive gear, and use a
press to remove the taper roller bearing, bushing
and 6th drive gear.
ST1
18722AA010
REMOVER
ST2
899864100
REMOVER
6) Remove the 5th-6th sleeve, 6th needle bearing
and 6th baulk ring.
7) Set the ST to the 3rd drive gear, and use a press
to remove individual parts.
ST
18720AA000
REMOVER
(A) Taper roller bearing
(B) Bushing
(C) 6th drive gear
(A) Needle bearing
(B) 6th baulk ring
(C) 5th-6th sleeve
MT-00557
(A)
(B)
(C)
ST1
ST2
ST1
(A)
(B)
(C)
MT-00558
(A) 3rd drive gear
(B) 3rd-4th sleeve
(A)
ST
(B)
(B)
ST
MT-01406
6MT-70
Main Shaft Assembly
MANUAL TRANSMISSION AND DIFFERENTIAL
D: ASSEMBLY
NOTE:
When replacing the following parts, replace as a
set.
• Sleeve and hub
• Outer baulk ring, 3rd synchro cone and inner
baulk ring
• Taper roller bearing
1) Apply adequate transmission gear oil to the main
shaft, 3rd needle bearing and 3rd drive gear inner
surface.
2) Install the 3rd needle bearing and 3rd drive gear
to the main shaft.
3) Install the inner baulk ring, 3rd synchro cone and
outer baulk ring.
NOTE:
Install the 3rd synchro cone by aligning the protru-
sion of the 3rd synchro cone with the hole on the
3rd drive gear.
(A) 3rd needle bearing
(B) 3rd drive gear
MT-00560
(A)
(B)
(A) Inner baulk ring
(B) Outer baulk ring
(A)
(B)
MT-00561
MT-01501
6MT-71
Main Shaft Assembly
MANUAL TRANSMISSION AND DIFFERENTIAL
4) Install the 3rd-4th hub and 4th bushing.
(1) Being careful of the install direction of the
3rd-4th hub, set to the main shaft.
(2) Being careful not to cover the oil holes of the
main shaft and 4th bushing, attach to the main
shaft.
(3) Using the ST, push in to the 3rd-4th hub and
4th bushing all at once.
ST1
18651AA000
INSTALLER
ST2
398177700
INSTALLER
CAUTION:
Do not apply pressure in excess of 40 kN (4.0
ton, 4.4 US ton, 3.9 Imp ton).
NOTE:
When pushing into the 3rd-4th hub and 4th bush-
ing, move the outer baulk ring to match the protru-
sion of the outer baulk ring and the cut out on the
3rd-4th bushing.
5) Make sure that the 3rd drive gear can be turned
smoothly by hand. If it does not turn smoothly, re-
assemble.
(A) Main shaft
(B) 3rd-4th hub
(C) 3rd drive gear
(A) 4th bushing
(B) 3rd-4th hub
(C) 4th bushing oil hole
(D) Main shaft oil hole
MT-00884
(A)
(B)
(C)
MT-01819
(A)
(B)
A
(D)
(C)
A
A - A
(C)
(D)
(A)
(A) 3rd-4th hub
(B) Outer baulk ring
(C) Cut out on the 3rd-4th hub
(D) Protrusion of the outer baulk ring
(E) 4th bushing
MT-00555
(D)
(C)
(A)
(E)
(E)
(A)
(B)
ST1
ST2
6MT-72
Main Shaft Assembly
MANUAL TRANSMISSION AND DIFFERENTIAL
6) Attach the 3rd-4th shifting insert key at the ap-
propriate position of the 3rd-4th sleeve.
NOTE:
• The angle of each shifting insert key is 120°.
• Refer to the following figure to install the shifting
insert key.
7) Attach the 3rd-4th sleeve to the 3rd-4th hub.
NOTE:
• There is an identification groove on the 3rd-4th
sleeve.
• Place the groove towards the 3rd drive gear, and
attach the 3rd-4th sleeve.
8) Install the 4th baulk ring.
9) Apply adequate transmission gear oil to the main
shaft, 4th needle bearing and 4th drive gear inner
surface.
10) Install the 4th needle bearing and 4th drive
gear.
(A) Attach the straight part of the shifting insert key
to the sleeve convex portion.
(B) 3rd-4th shifting insert key
(C) 3rd-4th sleeve
(A) 3rd drive gear
(B) 3rd-4th sleeve identification groove (1)
(B)
(C)
MT-01820
(A)
(B)
(A)
MT-00563
(A)
(B)
(A) 4th needle bearing
(B) 4th drive gear
MT-00564
MT-00565
(A)
(B)
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