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AUTOMATIC TRANSMISSION
General Description
AUTOMATIC TRANSMISSION
1. General Description 5. PLANETARY GEAR AND PLATE
A: SPECIFICATION Model Non-turbo Turbo
Tooth number of
1. TORQUE CONVERTER CLUTCH front sun gear
33
Tooth number of
Model Non-turbo Turbo 21
front pinion
Symmetric, 3 element, single stage,
Type Tooth number of
2 phase torque converter 75
front internal gear
Stall torque ratio 2.05 -- 2.35
Tooth number of
Nominal diameter 42
246 (9.69) rear sun gear
mm (in)
Tooth number of
Stall speed (at sea 17
2,200 -- 2,700 2,700 -- 3,200 rear pinion
level) rpm
Tooth number of
One-way clutch Sprague type one-way clutch 75
rear internal gear
Drive plate num-
2. OIL PUMP ber of high clutch
4 5
Drive plate num-
Parachoid constant-displacement 5 7
Type ber of low clutch
pump
Drive plate num-
Driving method Driven by engine
ber of reverse 2
Inner rotor 9 clutch
Number of teeth
Outer rotor 10 Drive plate num-
3 4
ber of 2-4 brake
3. TRANSMISSION CONTROL ELEMENT Drive plate num-
ber of low & 5 7
4-forward, 1-reverse, reverse brake
Type
double-row planetary gears
Multi-plate clutch 3 sets 6. SELECTOR POSITION
Multi-plate brake 2 sets
One-way clutch Transmission in neutral, output member immov-
1 set P (Park)
(sprague type) able, and engine start possible
R
Transmission in reverse for backing
4. TRANSMISSION GEAR RATIO (Reverse)
N Transmission in neutral and engine start possi-
1st 2.785 (Neutral) ble
2nd 1.545 Automatic gear change
D (Drive)
3rd 1.000 1st 2nd 3rd 4th
4th 0.694 Automatic gear change
3 (3rd)
Rev 2.272 1st 2nd 3rd 4th
2nd gear locked
2 (2nd)
(Deceleration possible 2nd 3rd 4th)
1st gear locked
1 (1st)
(Deceleration possible 1st 2nd 3rd 4th)
Control
Wire cable type
method
4AT-2
General Description
AUTOMATIC TRANSMISSION
7. HYDRAULIC CONTROL AND LUBRICA- 8. COOLING AND HARNESS
TION
Liquid-cooled cooler incor-
Cooling system
Electronic hydraulic control porated in radiator
[Four forward speed Inhibitor switch 12 poles
Type changes by electrical signals Transmission harness 20 poles
of vehicle speed and accel-
erator (throttle) opening] 9. TRANSFER
Recom-
SUBARU ATF Type-HP
mended Model Non-turbo Turbo
Fluid Alternative Idemitsu: ATF HP Multi-plate transfer Variable torque
Castrol: Transmax J Transfer type
(MP-T) distribution (VTD)
Pennzoil Quaker State: Pen-
Drive & driven
nzoil ATF-J
plate number of 5 3
Fluid capacity 9.3 -- 9.6 transfer clutch
2 (US qt, Imp qt) (9.8 -- 10.1, 8.2 -- 8.4) Control method Electronic hydraulic type
Forced feed lubrication with The same Automatic transmission fluid
Lubrication system Lubricant
oil pump used in automatic transmission
Automatic transmission fluid 1st reduction gear
Oil 1.000 (53/53)
(above mentioned) ratio
10.FINAL REDUCTION
Non-turbo Turbo
Final gear ratio 4.111 (37/9) 3.900 (39/10)
11.RECOMMENDED GEAR OIL
(1)
(2)
(3)
GL-5
(4)
( C) -30 -26 -15 -5 0 15 25 30
( F) -22 -15 5 23 32 59 77 86
Lubrication oil 90
85W
80W
75W -90
MT-00001
(1) Item (3) API standard
(2) Front differential gear oil (4) SAE viscosity No. and applica-
ble temperature
Front differential oil capacity
1.1 -- 1.3 (1.2 -- 1.4, 1.0 -- 1.1)
2 (US qt, Imp qt)
4AT-3
General Description
AUTOMATIC TRANSMISSION
B: COMPONENT
1. TORQUE CONVERTER CLUTCH AND CASE
(1)
(2)
(3) (4)
(15)
T2
T2
(16) (5)
(6)
(7)
(14)
(8)
T2 T1
T2
(13)
T3
(12) (9)
(10)
(11)
AT-00002
(1) Pitching stopper bracket (9) Input shaft Tightening torque: Nm (kgf-m, ft-lb)
(2) O-ring (10) O-ring T1: 18 (1.8, 13.3)
(3) Differential oil level gauge (11) Torque converter clutch ASSY T2: 41 (4.2, 30.2)
(4) Stay (12) Drain plug T3: 44 (4.5, 32.5) (Aluminum gasket)
(5) Seal pipe (13) Gasket 70 (7.1, 51.6) (Copper gasket)
(6) Oil pump shaft (14) Oil seal
(7) Clip (15) Clip (Turbo model)
(8) Rubber seal (16) Converter case
4AT-4
General Description
AUTOMATIC TRANSMISSION
2. OIL PUMP
T4 (3)
(4)
(2)
T4
(1)
(11)
(10)
(9)
(8)
(7)
T5
(6)
(12) T2
(5)
(13)
(12)
(13) T7
T6 T2 T1
(14)
T3 (21)
(16) (20)
(19)
(18)
(17)
(15)
AT-03594
(1) Oil pump rotor (11) Gasket (21) Lock nut
(2) Oil pump cover (12) O-ring
(3) Seal ring (13) Test plug Tightening torque: Nm (kgf-m, ft-lb)
(4) Thrust needle bearing (14) Stud bolt T1: 7 (0.7, 5.1)
(5) Drive pinion shaft (15) O-ring T2: 13 (1.3, 9.6)
(6) Roller bearing (16) O-ring T3: 18 (1.8, 13.3)
(7) Shim (17) Oil seal retainer T4: 25 (2.5, 18.4)
(8) Oil pump housing (18) Oil seal T5: 40 (4.1, 30)
(9) Nipple (19) O-ring T6: 42 (4.3, 31)
(10) Air breather hose (20) Drive pinion collar T7: 116 (11.8, 85)
4AT-5
General Description
AUTOMATIC TRANSMISSION
3. TRANSMISSION CASE AND CONTROL DEVICE
(1)
(34) (2)
(39)
T1
T4 T8 (3)
(33) (37) (5)
(36)
(31) (6)
(32) (4)
T10 (7)
(38)
(35)
(30) (9) T8
(29)
T3
(26) (28)
(27) (8)
(25) (16) T8
(13)
(14) T5 (10)
(23) (22) T7
T3 (24)
T6
(21) T7
(15)
(19) T2
(20) (18)
T8 (12) T9
(11)
(17)
AT-03373
4AT-6
General Description
AUTOMATIC TRANSMISSION
(1) ATF level gauge (18) Gasket (35) Nipple
(2) Oil charge pipe (19) Oil pan (36) Air breather hose
(3) O-ring (20) Magnet (37) Transmission case
(4) Straight pin (21) Stud bolt (Short) (38) Plate ASSY
(5) Return spring (22) Stud bolt (Long) (39) Washer
(6) Shaft (23) Parking rod
(7) Parking pawl (24) Manual plate Tightening torque: Nm (kgf-m, ft-lb)
(8) Parking support (25) Spring pin T1: 3.5 (0.36, 2.6)
(9) Transfer clutch seal (26) Detent spring T2: 5 (0.5, 3.6)
(10) Gasket (27) Ball T3: 6 (0.6, 4.3)
(11) Inlet pipe (28) Spring T4: 12 (1.2, 9)
(12) Union screw (29) Gasket T5: 13 (1.3, 9.6)
(13) O-ring (30) Outlet pipe T6: 14 (1.4, 10)
(14) Test plug (31) Union screw T7: 18 (1.8, 13.3)
(15) Oil filter (32) Oil seal T8: 25 (2.5, 18.4)
(16) Oil filter stud bolt (33) Range select lever T9: 40 (4.1, 30)
(17) Drain plug (34) Inhibitor switch ASSY T10: 45 (4.6, 33)
4AT-7
General Description
AUTOMATIC TRANSMISSION
4. CONTROL VALVE AND HARNESS ROUTING
(2)
(1)
(6) T1
(7)
(4) (8)
(5) (9)
(3) T1
T1
(10)
T2
AT-01322
(1) Stay (6) O-ring Tightening torque: Nm (kgf-m, ft-lb)
(2) Transmission harness (7) Front vehicle speed sensor T1: 7 (0.7, 5.1)
(3) O-ring (8) O-ring T2: 8 (0.8, 5.8)
(4) O-ring (9) Rear vehicle speed sensor
(5) Torque converter turbine speed (10) Control valve ASSY
sensor
4AT-8
General Description
AUTOMATIC TRANSMISSION
5. HIGH CLUTCH AND REVERSE CLUTCH
AT-00006
(1) High clutch drum (8) Spring retainer (15) Dish plate
(2) Lip seal (9) Cover (16) Driven plate (Reverse clutch)
(3) D-ring (10) Snap ring (17) Drive plate (Reverse clutch)
(4) Reverse clutch piston (11) Driven plate (High clutch) (18) Retaining plate (Reverse clutch)
(5) D-ring (12) Drive plate (High clutch) (19) Snap ring
(6) D-ring (13) Retaining plate (High clutch) (20) Thrust needle bearing
(7) High clutch piston (14) Snap ring (21) High clutch hub
4AT-9
General Description
AUTOMATIC TRANSMISSION
6. PLANETARY GEAR AND 2-4 BRAKE
(5)
(4)
(3)
(2)
(13)
(1) (12)
(11)
(10)
(9)
(8)
(7)
(6)
(19)
(18)
(16)
(17)
(16)
(17)
(16)
(15)
(14)
(24)
(26)
(25)
(23)
(22)
(21)
(20)
AT-00007
(1) Thrust needle bearing (10) Washer (19) Snap ring
(2) Front sun gear (11) Thrust needle bearing (20) Spring retainer
(3) Thrust needle bearing (12) Rear internal gear (21) 2-4 brake piston
(4) Snap ring (13) Washer (22) D-ring
(5) Front planetary carrier (14) Snap ring (23) D-ring
(6) Thrust needle bearing (15) Retaining plate (24) 2-4 brake piston retainer
(7) Rear sun gear (16) Drive plate (25) 2-4 brake seal
(8) Thrust needle bearing (17) Driven plate (26) Leaf spring
(9) Rear planetary carrier (18) Pressure rear plate
4AT-10
General Description
AUTOMATIC TRANSMISSION
7. LOW CLUTCH AND LOW & REVERSE BRAKE
(10) (11)
(9)
(8)
(7)
(5) (6)
(4)
(3)
(4)
(3)
(2)
(1)
(16)
(15)
(14)
(13)
(12)
T
(22)
(24)
(23)
(21)
(20)
(19)
(18)
(31)
(17)
(30)
(29)
(28)
(29)
(28)
(26) (27)
(25) AT-03603
(1) Snap ring (13) Needle bearing (25) Snap ring
(2) Retaining plate (14) Snap ring (26) Retaining plate
(3) Drive plate (15) One-way clutch (27) Leaf spring
(4) Driven plate (16) Snap ring (28) Drive plate
(5) Dish plate (17) Thrust needle bearing (29) Driven plate
(6) Snap ring (18) Seal ring (30) Dish plate
(7) Cover (19) Needle bearing (31) Low & reverse brake piston
(8) Spring retainer (20) One-way clutch inner race
(9) D-ring (21) Washer Tightening torque: Nm (kgf-m, ft-lb)
(10) Low clutch piston (22) Socket bolt T: 25 (2.5, 18.4)
(11) D-ring (23) Spring retainer
(12) Low clutch drum (24) Return spring
4AT-11
General Description
AUTOMATIC TRANSMISSION
8. REDUCTION GEAR WITH MP-T
(4)
(3)
(2)
(1) T
(11)
(10)
(8)
(8)
(9)
(8)
(7)
(6)
(5)
AT-02930
(1) Seal ring (6) Snap ring (11) Lock nut
(2) Ball bearing (7) Ball bearing
(3) Reduction drive gear (8) Snap ring Tightening torque: Nm (kgf-m, ft-lb)
(4) Reduction drive shaft (9) Reduction driven gear T: 100 (10.2, 73.8)
(5) Drive pinion shaft (10) Washer
4AT-12
General Description
AUTOMATIC TRANSMISSION
9. REDUCTION GEAR WITH VTD
(7)
(11)
(6)
(3) (2)
(4)
(5) (10)
(4) (9)
(3)
(8)
(23)
(1)
(22)
(21)
(19)
(20)
(19)
(17) (18)
(16)
(15)
(14)
(13)
(12) (32)
(31)
(29) T
(30)
(27)
(27)
(28)
(27)
(26)
(25)
(24)
AT-02203
(1) Ball bearing (13) Rear drive shaft (25) Snap ring
(2) Reduction drive gear (14) Ball bearing (26) Ball bearing
(3) Washer (15) Multi-plate clutch (LSD) hub (27) Snap ring
(4) Needle bearing (16) Ball bearing (28) Reduction driven gear
(5) Pinion gear (17) Revolution gear (29) Lock washer
(6) Carrier (18) Driven plate (Thick) (30) Lock nut
(7) Planetary pinion shaft (19) Drive plate (31) Gasket
(8) Snap ring (20) Driven plate (Thin) (32) Extension case
(9) Seal ring (21) Driven plate (Thick)
(10) Thrust needle bearing (22) Retaining plate Tightening torque: Nm (kgf-m, ft-lb)
(11) Intermediate shaft (23) Rear drive shaft shim T: 100 (10.2, 73.8)
(12) Thrust washer (24) Drive pinion shaft
4AT-13
General Description
AUTOMATIC TRANSMISSION
10.DIFFERENTIAL GEAR
(12)
(1) (13)
(2)
(11)
(3)
(4) (11) (12)
(13)
(5)
T2
(10)
T1
T1
(10) (6)
(9)
(7)
(8)
(7) (8)
(6) (9)
AT-00011
(1) Hypoid driven gear (7) Oil seal (13) Differential bevel gear
(2) Pinion shaft (8) O-ring
(3) Differential case (RH) (9) Differential side retainer Tightening torque: Nm (kgf-m, ft-lb)
(4) Straight pin (10) Lock plate T1: 25 (2.5, 18.4)
(5) Differential case (LH) (11) Washer T2: 62 (6.3, 45.7)
(6) Taper roller bearing (12) Differential bevel pinion
4AT-14
General Description
AUTOMATIC TRANSMISSION
11.TRANSFER AND EXTENSION CASE WITH MP-T
(7)
(6)
(5)
(6)
(5)
(14)
(4)
(3)
(1) (2)
(13)
(12)
(20)
T2 (19)
(11) (18)
(10)
(9)
(8)
(21) T1
(15) (22)
T2
(17)
(16)
AT-02976
(1) Thrust needle bearing (11) Transfer clutch piston (21) Test plug
(2) Needle bearing (12) Rear drive shaft (22) O-ring
(3) Snap ring (13) Ball bearing
(4) Driven plate (Thick) (14) Seal ring Tightening torque: Nm (kgf-m, ft-lb)
(5) Drive plate (15) Gasket T1: 13 (1.3, 9.6)
(6) Driven plate (Thin) (16) Transfer clutch pipe T2: 25 (2.5, 18.4)
(7) Retaining plate (17) Extension case
(8) Snap ring (18) Transmission hanger
(9) Transfer clutch piston seal (19) Oil seal
(10) Return spring (20) Dust cover
4AT-15
General Description
AUTOMATIC TRANSMISSION
12.TRANSFER AND EXTENSION CASE WITH VTD
(5)
(4)
(2)
(3)
(2)
(1)
T1
(20)
(19)
T3
(21)
(12)
(18)
(17)
T2
(9) (16)
(15)
(22)
(14)
(11)
(10) (13)
(8)
(7)
(6)
AT-03595
(1) Driven plate (Thick) (10) Multi-plate clutch (LSD) piston (19) O-ring
(2) Drive plate (11) D-ring (20) Rear vehicle speed sensor
(3) Driven plate (Thin) (12) Gasket (21) Transmission hanger
(4) Driven plate (Thick) (13) Multi-plate clutch (LSD) pipe (22) Harness bracket
(5) Retaining plate (14) Extension case
(6) Snap ring (15) O-ring Tightening torque: Nm (kgf-m, ft-lb)
(7) Spring retainer (16) Test plug T1: 7 (0.7, 5.1)
(8) Plate (17) Oil seal T2: 13 (1.3, 9.6)
(9) O-ring (18) Dust cover T3: 25 (2.5, 18.4)
4AT-16
General Description
AUTOMATIC TRANSMISSION
13.TRANSMISSION MOUNTING
T2 (2)
T2
T4
(3)
T3
T5
(1)
(4)
T1
T5
AT-01353
(1) Pitching stopper Tightening torque: Nm (kgf-m, ft-lb)
(2) Rear cushion rubber T1: 35 (3.6, 26)
(3) Transmission rear crossmember T2: 39 (4.0, 29)
(4) Stopper T3: 50 (5.1, 36.9)
T4: 58 (5.9, 43)
T5: 70 (7.1, 51.6)
4AT-17
General Description
AUTOMATIC TRANSMISSION
C: CAUTION
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