Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 430
6MT-57
Center Differential
MANUAL TRANSMISSION AND DIFFERENTIAL
15.Center Differential
A: REMOVAL
1) Remove the manual transmission case from the
vehicle. <Ref. to 6MT-31, REMOVAL, Manual
2) Prepare the transmission for overhaul. <Ref. to
6MT-37, Preparation for Overhaul.>
3) Remove the extension case. <Ref. to 6MT-43,
4) Remove the transfer driven gear. <Ref. to 6MT-
55, REMOVAL, Transfer Driven Gear.>
5) Disconnect the center differential connector.
6) Remove the adjusting washer and center differ-
ential.
7) Remove the needle bearing.
B: INSTALLATION
1) Install the needle bearing.
2) Install the adjusting washer and center differen-
tial.
3) When replacing the center differential, select
and install the appropriate transfer drive gear and
adjusting washer. <Ref. to 6MT-45, ADJUST-
4) Connect the center differential connector, and
affix to the oil guide.
5) Install the transfer driven gear. <Ref. to 6MT-55,
INSTALLATION, Transfer Driven Gear.>
6) Install the extension case. <Ref. to 6MT-43, IN-
7) Install the manual transmission case assembly
to the vehicle. <Ref. to 6MT-33, INSTALLATION,
Manual Transmission Assembly.>
C: INSPECTION
Check that there is no damage on the center differ-
ential. Replace if damaged.
(A) Adjusting washer
(B) Center differential
(A)
(B)
MT-00952
MT-00516
MT-00516
(A) Adjusting washer
(B) Center differential
(A)
(B)
MT-00952
6MT-58
Transmission Case
MANUAL TRANSMISSION AND DIFFERENTIAL
16.Transmission Case
A: REMOVAL
1) Remove the manual transmission assembly
from the vehicle. <Ref. to 6MT-31, REMOVAL,
Manual Transmission Assembly.>
2) Prepare the transmission for overhaul. <Ref. to
6MT-37, Preparation for Overhaul.>
3) Remove the neutral position switch, back-up
light switch and harness. <Ref. to 6MT-41, RE-
MOVAL, Neutral Position Switch.> <Ref. to 6MT-
39, REMOVAL, Back-up Light Switch.>
4) Remove the extension case. <Ref. to 6MT-43,
5) Remove the transfer driven gear. <Ref. to 6MT-
55, REMOVAL, Transfer Driven Gear.>
6) Remove the center differential. <Ref. to 6MT-57,
REMOVAL, Center Differential.>
7) Remove the oil guides G and H.
8) Remove the snap ring and flat washer from the
selector arm area.
9) Using an ST, remove the neutral set spring and
support.
ST1 18756AA000
CLAW
ST2 399893600
PLIER
10) Lift the striking rod, and remove the straight pin.
(A) Oil guide G
(B) Oil guide H
(A) Snap ring
(B) Flat washer
MT-01728
(A)
(B)
MT-01616
(B)
(A)
(A) Striking rod
(B) Straight pin
MT-01092
ST2
ST1
MT-01307
(A)
(B)
6MT-59
Transmission Case
MANUAL TRANSMISSION AND DIFFERENTIAL
11) Remove the selector arm No. 2, shifter arm, se-
lector plunger and spring.
12) Remove the transfer bearing holder.
NOTE:
Using a general tool may cause damage. Remove
the bolt using the ST.
ST 18663AA000 SOCKET
13) Remove the washer on the main shaft section.
14) Remove the driven gear assembly shim and
spacer.
15) Remove the snap ring.
16) Remove the pilot bolt.
(A) Selector arm No. 2
(B) Shifter arm
(C) Selector plunger
MT-02713
(B)
(A)
(C)
MT-01619
(A) Driven gear ASSY
(A)
MT-00526
MT-00527
MT-00528
6MT-60
Transmission Case
MANUAL TRANSMISSION AND DIFFERENTIAL
17) Remove the holder reverse bolt.
18) Remove the transmission case.
NOTE:
If the oil guide is caught between the shift fork, it
may be difficult to remove the transmission case.
Move the oil guide, then remove. Do not pull on the
transmission case with excessive force.
19) Remove any remaining liquid gasket from the
transmission case and adapter plate.
B: INSTALLATION
1) Check that the shifter fork and the interlock block
are both shifted into the neutral position. If they are
not, shift into the neutral position.
2) Apply liquid gasket to the adapter plate.
Liquid gasket:
THREE BOND 1215 (Part No. 004403007) or
equivalent
3) Install the transmission case.
MT-00529
MT-01711
(A) Striking rod
(B) Reverse interlock block
(C) Interlock block
(A)
(C)
(B)
MT-01620
MT-00532
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