Subaru Impreza 2003 Service Manual page 1534

AUTOMATIC TRANSMISSION
1. General Description
A: SPECIFICATIONS
1. TORQUE CONVERTER CLUTCH
Model 1.6 L
Symmetric, 3 element, single stage,
Type
2 phase torque converter
Stall torque
2.2 — 2.4 2.0 — 2.2
ratio
Nominal
236 mm (9.29 in)
diameter
2,400 —
Stall speed
3,000
(at sea level)
rpm
One-way
Sprague type one-way clutch
clutch
2. OIL PUMP
Type Pracoid constant-displacement pump
Driving method
Inner rotor
Number of teeth
Outer rotor
3. TRANSMISSION CONTROL ELEMENT
Type
Multi-plate clutch
Multi-plate brake
One-way clutch
(sprague type)
4. TRANSMISSION GEAR RATIO
1st
2nd
3rd
4th
Rev
GENERAL DESCRIPTION
2.0 L
2.0 L
Non- 2.5 L
Turbo
turbo
1.85 — 2.05 —
2.15 2.35
246 mm (9.69 in)
2,200 — 2,100 — 2,900 —
2,700 2,600 3,500
rpm rpm rpm
Driven by engine
9
10
4-forward, 1-reverse,
double-row planetary gears
3 sets
2 sets
1 sets
Gear ratio
2.785
1.545
1.000
0.694
2.272
5. PLANETARY GEAR AND PLATE
Model 1.6 L
Tooth num-
ber of front
sun gear
Tooth num-
ber of front
pinion
Tooth num-
ber of front
internal gear
Tooth num-
ber of rear
sun gear
Tooth num-
ber of rear
pinion
Tooth num-
ber of rear
internal gear
Drive &
driven plate
number of
high clutch
Drive &
driven plate
number of
low clutch
Drive &
driven plate
number of
reverse
clutch
Drive &
driven plate
number of 2-
4 brake
Drive &
driven plate
number of
low &
reverse
brake
4AT-2
2.0 L
Non- 2.5 L
turbo
33
21
75
42
17
75
3 4
4 6
1 2
2 3
4 6
2.0 L
Turbo
5
7
4
7