Subaru IMPREZA GD 2007 Series Manual page 2509

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AUTOMATIC TRANSMISSION
1. General Description
A: SPECIFICATION
1. TORQUE CONVERTER CLUTCH
Model Non-turbo
Symmetric, 3 element, single stage,
Type
Stall torque ratio
Standard diameter
mm (in)
Stall speed (at sea
2,200 — 2,700
level) rpm
One-way clutch Sprag type one-way clutch
2. OIL PUMP
Parachoid constant-displacement
Type
Driving method
Inner rotor
Number of teeth
Outer rotor
3. TRANSMISSION CONTROL ELEMENT
Type
double-row planetary gears
Multi-plate clutch
Multi-plate brake
One-way clutch
(sprag type)
4. TRANSMISSION GEAR RATIO
1st
2nd
3rd
4th
Rev
General Description
Turbo
2 phase torque converter
2.05 — 2.35
246 (9.69)
2,600 — 3,100
pump
Driven by engine
9
10
4-forward, 1-reverse
3 sets
2 sets
1 sets
2.785
1.545
1.000
0.694
2.272
4AT-2
5. PLANETARY GEAR AND PLATE
Model Non-turbo
Number of front
sun gear teeth
Number of front
pinion teeth
Number of front
internal gear teeth
Number of rear
sun gear teeth
Number of rear
pinion teeth
Number of rear
internal gear teeth
Number of high
4
clutch drive plates
Number of low
5
clutch drive plates
Number of reverse
clutch drive plates
Number of drive
plates for the 2-4 3
brake
Number of drive
plates for low & 5
reverse brake
6. SELECTOR POSITION
Transmission is in neutral, output member is
P (Park)
immovable, engine start is possible
R
Transmission in reverse for backing up
(Reverse)
N Transmission is in neutral and engine start is
(Neutral) possible
Automatic gear change 1st ← → 2nd ←→ 3rd
D (Drive)
← → 4th
Automatic gear change 1st ← → 2nd ←→ 3rd
3 (3rd)
2nd gear will be locked (speed reduction is
2 (2nd)
possible, 2nd ← 3rd ← 4th.)
1st gear will be locked (speed reduction is
1 (1st)
possible, 1st ← 2nd ← 3rd ← 4th.)
Control
Wire cable type
method
Turbo
33
21
75
42
17
75
5
7
2
4
7
← 4th