Subaru Impreza 2002 Service Manual page 420

2. SELECTION OF 3RD
NOTE:
Perform the following procedures when:
• Replacing the main shaft.
• Replacing the 3rd, 3rd to 6th drive gear and
bush.
• Replacing the 3rd, 3rd to 6th synchro assembly.
1) Insert the main shaft assembly in adapter plate.
2) Set the height gauge to adapter plate. Lower the
indicator of height gauge to upper surface of snap
ring groove, on the upper side of main rear bearing,
then set to zero point.
ST 18853AA000 HEIGHT GAUGE
(A) Ball bearing
NOTE:
• Remove the remaining gasket on edge surface
with scraper, since the height gauge is set on
adapter plate during measurement.
• Do not put the height gauge on shaded area in
the figure during the measurement.
SHIFTER FORK AND ROD
4TH FORK ROD
-
(A)
TR0862
TR0756
6MT-125
MANUAL TRANSMISSION AND DIFFERENTIAL
3) Using the height gauge, measure "C1" and "C2"
shown in the figure.
C2
C1
(B)
(A)
(A) 3rd main gear
(B) 4th main gear
(1) Shift the 3rd-4th sleeve to 4th gear side,
then press down to the stopper and measure
"C2".
(A)
(A) 4th main gear
TR0863
TR0864