Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 445
6MT-117
Shifter Fork and Rod
MANUAL TRANSMISSION AND DIFFERENTIAL
3) Use a height gauge to measure “D1” and “D2” as
shown in the figure.
(1) Shift up the 5th-6th sleeve all the way to the
6th drive gear side, and measure “D2”.
NOTE:
• Set the height gauge indicator near the measure-
ment target, and lock dial (1) as shown in the figure.
Turn dial (2), and set the indicator to the 6th side
end surface of the sleeve.
• The measurement is to be performed with two
persons, while holding the sleeve straight.
• Turn approximately 72° at a time, and measure
the sleeve in 5 locations. Round down the 2 highest
and 2 lowest measurement values. The remaining
center value is used as the measurement value.
(2) Set the height gauge indicator upside down.
(A) 5th drive gear
(B) 6th drive gear
(A) 6th drive gear
MT-00712
D1
D2
(A)
(B)
MT-00713
(A)
(A) Indicator
MT-00585
(2)
(1)
MT-00710
(A)
6MT-118
Shifter Fork and Rod
MANUAL TRANSMISSION AND DIFFERENTIAL
(3) Shift down the 5th-6th sleeve all the way to
the 5th drive gear side, and measure “D1”.
NOTE:
• Set the height gauge indicator near the measure-
ment target, and lock dial (1) as shown in the figure.
Turn dial (2), and set the indicator to the 5th side
end surface of the sleeve.
• Turn approximately 72° at a time, and measure
the sleeve in 5 locations. Round down the 2 highest
and 2 lowest measurement values. The remaining
center value is used as the measurement value.
4) According to both of the measurements, calcu-
late the neutral position of the 5th-6th sleeve. From
the following calculation, select a fork rod which
matches the calculated value.
Calculation: T = (D1 + D2) / 2
T: 5th-6th sleeve center position
D1: Measured length from the shaft rear bearing
snap ring groove to the sleeve groove end, when
shifted to 5th gear [Value: +55 mm (2.17 in)]
D2: Measured length from the main shaft rear bear-
ing snap ring groove to the sleeve groove end,
when shifted to 6th gear
NOTE:
Attach the indicator upside down in comparison to
the setting procedures for the zero point. Add “d1”
[Value: 55 mm (2.17 in)] from the figure below to
“D1”, and measure “D1”.
(A) 5th drive gear
MT-00714
(A)
MT-00585
(2)
(1)
T mm (in)
Lot No. (marking)
M.SFT
Snap ring
805072010
[t = 1.65 mm
(0.065 in)]
M.SFT
Snap ring
805072011
[t = 1.95 mm
(0.077 in)]
M.SFT
Snap ring
805072012
[t = 2.25 mm
(0.089 in)]
64.12 —
64.42
(2.5244 —
2.5362)
32945AA021
(none)
32945AA031
(2)
32945AA041
(4)
64.42 —
64.72
(2.5362 —
2.5480)
32945AA011
(1)
32945AA021
(none)
32945AA031
(2)
64.72 —
65.02
(2.5480 —
2.5598)
32945AA001
(3)
32945AA011
(1)
32945AA021
(none)
T = Thickness
MT-00705
d1
6MT-119
Shifter Fork and Rod
MANUAL TRANSMISSION AND DIFFERENTIAL
4. REVERSE FORK ROD SELECTION
NOTE:
In the following conditions, perform the procedures
below.
• Reverse idler gear replacement.
• Reverse idler gear No. 2 replacement.
• Adapter plate replacement.
• Base replacement.
1) Insert the reverse idler gear assembly into the
adapter plate.
2) Tighten the base COMPL attachment bolts.
Tightening torque:
25 N·m (2.5 kgf-m, 18.4 ft-lb)
3) Set the height gauge to the adapter plate. Lower
the height gauge indicator to the mating surface of
the adapter plate and case, and set to zero points.
ST 18853AA000 HEIGHT GAUGE
NOTE:
• The adapter plate will be the base point for the
measurement. Use a scraper to remove any gasket
material remaining on the end face.
• During measurement, do not place the height
gauge in the shaded area shown in the figure.
4) Shift the reverse sleeve to the reverse idler gear
No. 2, and measure “T”.
NOTE:
• Set the height gauge indicator near the measure-
ment target, and lock dial (1) as shown in the figure.
Turn dial (2), and set the indicator to the end face of
the reverse sleeve side.
• Turn approximately 72° at a time, and measure
the sleeve in 5 locations. Round down the 2 highest
and 2 lowest measurement values. The remaining
center value is used as the measurement value.
MT-00546
MT-00582
ST
MT-00583
(A) Reverse idler gear No. 2
(A) Reverse idler gear No. 2
MT-00715
(A)
T
MT-00716
(A)
MT-00585
(2)
(1)
6MT-120
Shifter Fork and Rod
MANUAL TRANSMISSION AND DIFFERENTIAL
5) Calculate the neutral position of the reverse
sleeve according to the measurement. From the
following calculation, select a fork rod which match-
es the calculated value.
Calculation: T + 4.8 mm (0.189 in)
T + 4.8 mm (0.189 in) mm
(in)
Lot No. (marking)
33.50 — 33.80
(1.3189 — 1.3307)
32816AA110 (1)
33.80 — 34.10
(1.3307 — 1.3425)
32816AA130 (none)
34.10 — 34.40
(1.3425 — 1.3543)
32816AA140 (2)
T = Thickness
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