Subaru Impreza 2002 Service Manual page 4318

3) Set the main shaft assembly on ST, then remove
the lock nut and washer.
ST1 18665AA000 HOLDER
ST2 18664AA000 BASE
NOTE:
Use a 38 mm (1.50 in) socket wrench.
4) Remove the main shaft assembly from ST.
5) Set the ST1 on 6th drive gear, then remove the
taper roller bearing, bush and 6th drive gear using
press.
NOTE:
Refer to "ID" section for transmission model. <Ref.
to ID-2, IDENTIFICATION, Identification.>
ST1(TY856WBXXX model) 18722AA000 REMOVER
ST1(TY856WNXXX model) 18722AA010 REMOVER
ST2 899864100 REMOVER
(B)
(A) Taper roller bearing
(B) Bush
(C) 6th drive gear
MAIN SHAFT ASSEMBLY
6) Remove the 5th-6th sleeve, 6th needle bearing
and 6th baulk ring.
TR0729
7) Set the ST on 3rd drive gear, then remove each
part using press.
ST 18720AA000 REMOVER
(A)
(C)
TR0730
6MT-77
MANUAL TRANSMISSION AND DIFFERENTIAL
(A) Needle bearing
(B) 6th baulk ring
(C) 5th-6th sleeve
(B)
ST
ST
(B)
(A) 3rd drive gear
(B) 3rd-4th sleeve
(A)
(B)
(C)
TR0731
(A)
TR0732