Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 429
6MT-53
Transfer Drive Gear
MANUAL TRANSMISSION AND DIFFERENTIAL
13.Transfer Drive Gear
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 extension case. <Ref. to 6MT-43,
4) Remove the transfer drive gear.
B: INSTALLATION
1) Install the transfer drive gear.
Tightening torque:
25 N·m (2.5 kgf-m, 18.4 ft-lb)
2) When the ball bearing, transfer drive gear or
snap ring are replaced, select an appropriate ad-
justing washer for the transfer drive gear. <Ref. to
6MT-44, ASSEMBLY, Extension Case.>
3) Install the extension case. <Ref. to 6MT-43, IN-
4) Install the manual transmission assembly to the
vehicle. <Ref. to 6MT-33, INSTALLATION, Manual
C: DISASSEMBLY
1) Remove the snap ring.
2) Remove the bearing using the ST.
ST 499877000
RACE 4-5 INSTALLER
D: ASSEMBLY
1) Using the ST, install the ball bearing.
NOTE:
Use a new ball bearing.
ST1 499247400
INSTALLER
ST2 398497701
SEAT
2) Install the snap ring.
MT-00505
MT-00505
MT-00506
MT-00507
ST
MT-00508
ST2
ST1
MT-00506
6MT-54
Transfer Drive Gear
MANUAL TRANSMISSION AND DIFFERENTIAL
3) Inspect the clearance between the snap ring and
the ball bearing. <Ref. to 6MT-54, INSPECTION,
E: INSPECTION
1) Bearing
Replace the bearings in the following cases.
• Damage or rust on the bearings
• Wear, or damage
• The bearing does not rotate smoothly or an ab-
normal noise is emitted.
2) Drive gear
Replace the drive gear in following case:
• If the drive gear tooth surface and shaft are ex-
cessively damaged or broken.
3) Measure the clearance between the snap ring
and ball bearing inner race with a thickness gauge.
Standard clearance between the snap ring and
inner race:
0 — 0.15 mm (0 — 0.0059 in)
4) If the measurement is out of specifications, rese-
lect an appropriate snap ring.
After replacing the snap ring, reinspect the clear-
ance.
Snap ring
Part No.
Thickness mm (in)
805045050
1.76 (0.069)
805045060
1.88 (0.074)
805045070
2.00 (0.079)
MT-00509
6MT-55
Transfer Driven Gear
MANUAL TRANSMISSION AND DIFFERENTIAL
14.Transfer Driven Gear
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 extension case. <Ref. to 6MT-43,
4) Remove the transfer driven gear.
B: INSTALLATION
1) Install the transfer driven gear.
2) When the bearing or the transfer driven gear is
replaced, select an appropriate adjusting washer
for the transfer driven gear. <Ref. to 6MT-45, AD-
3) Install the extension case. <Ref. to 6MT-43, IN-
4) Install the manual transmission assembly to the
vehicle. <Ref. to 6MT-33, INSTALLATION, Manual
C: DISASSEMBLY
1) Using the ST, remove the roller bearing (exten-
sion case side).
ST 498515700
REMOVER
2) Using the ST, remove the roller bearing (trans-
mission case side).
ST1 899858600
REMOVER
ST2 899864100
REMOVER
D: ASSEMBLY
1) Using the ST, install the roller bearing (transmis-
sion case side).
ST 499757002
INSTALLER
CAUTION:
Do not apply pressure in excess of 10 kN (1 ton,
1.1 US ton, 1.0 Imp ton).
MT-00951
MT-00951
(A) Roller bearing
MT-00511
ST
MT-00512
ST2
ST1
MT-00514
(A)
ST
6MT-56
Transfer Driven Gear
MANUAL TRANSMISSION AND DIFFERENTIAL
2) Using the ST, install the roller bearing (extension
case side).
ST1 398177700
INSTALLER
ST2 899864100
REMOVER
CAUTION:
Do not apply pressure in excess of 10 kN (1 ton,
1.1 US ton, 1.0 Imp ton).
E: INSPECTION
1) Bearing
Replace the bearings in the following cases.
• Damage or rust on the bearings
• Wear or damage
• After applying transmission gear oil, bearing
does not rotate smoothly or an abnormal noise is
emitted.
2) Driven gear
Replace the driven gear in the following cases.
• If the driven gear tooth surface and shaft are ex-
cessively damaged or broken.
(A) Roller bearing
MT-00513
(A)
ST1
ST2
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