specifications SUBARU LEGACY 1997 Service Workshop Manual

Automatic
transmissionOil pumpType Variable-capacity type vane pump
Driving method Driven by engine
Number of vanes 9 pieces
Hydraulic
controlTy p eElectronic/hydraulic control
[Four forward speed changes by electrical signals of car speed
and accelerator (throttle) opening]
Fluid Dexron II or Dexron III type Automatic transmission fluid
Fluid
capacity2200 cc 7.9(8.4 US qt, 7.0 Imp qt)
2500 cc 9.5(10.0 US qt, 8.4 Imp qt)
LubricationLubrication system Forced feed lubrication with oil pump
Oil Automatic transmission fluid (above mentioned.)
Cooling Cooling system Liquid-cooled cooler incorporated in radiator
HarnessInhibitor switch 12 poles
Transmission harnessFWD ... 11 poles
AWD ... 13 poles
TransferTransfer clutch Hydraulic multi-plate clutch
Clutch number of transfer clutch Drive plate & driven plate 5
Control method Electronic, hydraulic type
LubricantThe same Automatic Transmission Fluid used in automatic
transmission.
1st reduction gear ratio 1.000 (53/53)
Final
reductionFinal gear
ratioFront driveFWD 3.900 (39/10)
AWD2200 cc 4.111 (37/9)
2500 cc 4.444 (40/9)
Speedometer gear ratio2200 cc & LSi 0.83 (19/23)
GT 0.80 (20/25)
OUTBACK 0.76 (19/25)
Lubrication oilAPI, GL-5
Oil capacity Front drive 1.2(1.3 US qt, 1.1 Imp qt)
ATF cooling
systemRadiation capacity 1.651 kW (1,420 kcal/h, 5,635 BTU/h)
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3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

B: ADJUSTING PARTS
G3M0774
4
3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

No. Part Name Part Number Dimension mm (in) Application
1 Control piston2500 cc 31235AA000—030
13.5
0.030
0.037(0.53150.0012
0.0015), 13.50.023
0.030(0.53150.0009
0.0012),
13.50.016
0.023(0.53150.0006
0.0009), 13.50.009
0.016(0.53150.0004
0.0006)Adjusting side clear-
ance of oil pump
2200 cc 31235AA040 — 070
2 Cam ring 31241AA001 — 03117
0.010
0.017(0.66930.0004
0.0007), 170.003
0.010(0.66930.0001
0.0004),
17+0.004
0.003(0.6693+0.0002
0.0001), 17+0.011
+0.004(0.6693+0.0004
+0.0002)Adjusting side clear-
ance of oil pump
3 Vane (Oil pump) 31243AA000 — 03017
0.030
0.037(0.66930.0012
0.0015), 170.023
0.030(0.66930.0009
0.0012),
170.016
0.023(0.66930.0006
0.0009), 17+0.009
+0.016(0.6693+0.0004
+0.0006)Adjusting side clear-
ance of oil pump
4 Rotor (Oil pump) 31240AA000 — 03017
0.030
0.037(0.66930.0012
0.0015), 170.023
0.030(0.66930.0009
0.0012),
170.016
0.023(0.66930.0006
0.0009), 17+0.009
+0.016(0.6693+0.0004
+0.0006)Adjusting side clear-
ance of oil pump
5Thrust washer
(Reverse clutch)31299AA000 — 0600.7, 0.9, 1.1, 1.3, 1.5, 1.7, 1.9
(0.028, 0.035, 0.043, 0.051, 0.059, 0.067, 0.075)Adjusting end play of
reverse clutch drum
6 Bearing race 803031021 — 0270.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0
(0.031, 0.039, 0.047, 0.055, 0.063, 0.071, 0.079)Adjusting total end
play
7 Retaining plate 31567AA350 — 4004.6, 4.8, 5.0, 5.2, 5.4, 5.6 (0.181, 0.189, 0.197, 0.205,
0.213, 0.220)Adjusting clearance
of reverse clutch
8 Retaining plate31567AA340,
31567AA190 — 2603.4, 3.6, 3.8, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0
(0.134, 0.142, 0.150, 0.157, 0.165, 0.173, 0.181, 0.189,
0.197)Adjusting clearance
of high clutch
9 Retaining plate31567AA010,
31567AA060 — 1104.0, 4.2, 4.4, 4.6, 4.8, 5.0, 5.2
(0.157, 0.165, 0.173, 0.181, 0.189, 0.197, 0.205)Adjusting clearance
of forward clutch
10 Retaining plate 31567AA410 — 4708.0, 8.2, 8.4, 8.6, 8.8, 9.0, 9.2
(0.315, 0.323, 0.331, 0.339, 0.346, 0.354, 0.362)Adjusting clearance
of overrunning clutch
11Retaining plate
No. 231667AA180 — 2506.5, 6.8, 7.1, 7.4, 7.7, 8.0, 8.2, 8.4
(0.256, 0.268, 0.280, 0.291, 0.303, 0.315, 0.323, 0.331)Adjusting clearance
of low and reverse
brake
12Pressure plate
(Front)31593AA151 — 1813.3, 3.7, 4.1, 4.5
(0.130, 0.146, 0.161, 0.177)Adjusting clearance
of transfer clutch
13Thrust bearing
(35x53xT)806536020,
806535030 — 070,
0903.8, 4.0, 4.2, 4.4, 4.6, 4.8, 5.0
(0.150, 0.157, 0.165, 0.173, 0.181, 0.189, 0.197)Adjusting end play of
transfer clutch
14Washer
(38.1 x 50 x T)803038021 — 0230.95, 1.00, 1.05
(0.0374, 0.0394, 0.0413)Adjusting backlash
of differential bevel
gear
15 Drive pinion shim 31451AA050 — 1000.150, 0.175, 0.200, 0.225, 0.250, 0.275
(0.0059, 0.0069, 0.0079, 0.0089, 0.0098, 0.0108)Adjusting drive pin-
ion height
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3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

C: LOCATION AND INSTALLING DIRECTION
OF THRUST NEEDLE BEARING
B3M0400A
6
3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

Unit: mm (in)
No. Part Name Part Number Inside diameter Outside diameter Dimension Application
AThrust needle
bearing806530020 30 (1.18) 47 (1.85) 3.3 (0.130)A place of high
clutch
BThrust needle
bearing806537010 38 (1.50) 53 (2.09) 3.2 (0.126)A place of high
clutch hub
CThrust needle
bearing806537010 38 (1.50) 53 (2.09) 3.2 (0.126)A place of front
sun gear
DThrust needle
bearing806558020 58 (2.28) 78 (3.07) 4.0 (0.157)A place of front
planetary carrier
EThrust needle
bearing806535120 35 (1.38) 53 (2.09) 4.8 (0.189)A place of rear
sun gear
FThrust needle
bearing806534010 34 (1.34) 53 (2.09) 3.37 (0.1327)A place of rear
internal gear
GThrust needle
bearing806558020 58 (2.28) 78 (3.07) 4.0 (0.157)A place of
overrunning clutch
hub
HThrust needle
bearing806542010 42 (1.65) 59 (2.32) 3.6 (0.142)A place of low &
reverse brake
IThrust needle
bearing806536020
806535030
36 (1.42) 53 (2.09)3.8, 4.0, 4.2, 4.4,
4.6, 4.8, 5.0
(0.150, 0.157,
0.165, 0.173,
0.181, 0.189,
0.197)Adjusting end
play of transfer
clutch
∼
806535070
806535090
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3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

D: FLUID PASSAGES
G3M0776
8
3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

G3M0777
9
3-2SPECIFICATIONS AND SERVICE DATA
1. Automatic Transmission and Differential

3. Performance Test
A: STALL TEST
1. GENERAL
The stall test is of extreme importance in diagnosing the
condition of the automatic transmission and the engine. It
should be conducted to measure the engine stall speeds in
all shift ranges except the P and N ranges.
Purposes of the stall test:
1) To check the operation of the automatic transmission
clutch.
2) To check the operation of the torque converter clutch.
3) To check engine performance.
2. TEST METHODS
Preparations before test:


1Check that throttle valve opens fully.


2Check that engine oil level is correct.


3Check that coolant level is correct.


4Check that ATF level is correct.


5Check that differential gear oil level is correct.


6Increase ATF temperature to 50 to 80°C (122 to 176°F)
by idling the engine for approximately 30 minutes (with
select lever set to“N”or“P”).
1) Install an engine tachometer at a location visible from
the driver’s compartment and mark the stall speed range
on the tachometer scale.
2) Place the wheel chocks at the front and rear of all
wheels and engage the parking brake.
3) Move the manual linkage to ensure it operates properly,
and shift the select lever to the 2 range.
B3M0286B
4) While forcibly depressing the foot brake pedal, gradu-
ally depress the accelerator pedal until the engine operates
at full throttle.
5) When the engine speed is stabilized, read that speed
quickly and release the accelerator pedal.
6) Shift the select lever to Neutral, and cool down the
engine by idling it for more than one minute.
7) Record the stall speed.
8) If stall speed in 2 range is higher than specifications,
forward clutch slipping on brake band slipping may occur.
To identify it, conduct the same test as above in D range.
9) Perform the stall tests with the select lever in the R
range.
CAUTION:
Do not continue the stall test for MORE THAN FIVE
SECONDS at a time (from closed throttle, fully open
throttle to stall speed reading). Failure to follow this
instruction causes the engine oil and ATF to deterio-
rate and the clutch and brake band to be adversely
affected.
38
3-2SERVICE PROCEDURE
3. Performance Test

Be sure to cool down the engine for at least one minute
after each stall test with the select lever set in the P or
N range and with the idle speed lower than 1,200 rpm.
If the stall speed is higher than the specified range,
attempt to finish the stall test in as short a time as
possible, in order to prevent the automatic transmis-
sion from sustaining damage.
Specifications
Stall speed (at sea level):
2200 cc 2,200 — 2,600 rpm
2500 cc 2,200 — 2,600 rpm
OUTBACK 2,300 — 2,700 rpm
3. EVALUATION
Stall speed
(at sea level)Position Cause
Less than specifications2
RThrottle valve not fully open
Erroneous engine operation
Torque converter clutch’s one-way clutch slipping
Greater than specificationsDForward clutch slipping
One-way clutch (1-2) malfunctioning
RLine pressure too low
Reverse clutch slipping
Low & reverse brake slipping
2Line pressure too low
Forward clutch slipping
Brake band slipping
One-way clutch (3-4) malfunctioning
39
3-2SERVICE PROCEDURE
3. Performance Test

G3M0431
(2) Measure the distance“”from the transmission
case mating surface to the reduction drive gear end
surface with ST1 and ST2. (On FWD models, measure
distance from end of case to end of bearing.)
Unit: mm
= Measured value50
ST1 398643600 GAUGE
ST2 499577000 GAUGE
(3) Calculation equation:
Unit: mm
T = (L + 0.4)
T : Clearance between end of reduction drive gear
and end of rear drive shaft. (Clearance between
end of reduction drive gear and end of bearing on
FWD model)
L : Distance from end of extension case to end of
rear drive shaft. (Distance from end of case to
point at bearing location)
0.4: Gasket thickness
: Height from end of transmission case to end of
reduction drive gear. (Height from end of case to
end of bearing on FWD models)
Select suitable thrust needle bearing from among those
listed in the following table to adjust clearance in the
0.05—0.20 mm (0.0020—0.0079 in) range.
AWD: Thrust needle bearingPart No. Thickness mm (in)
806536020
806535030
806535040
806535050
806535060
806535070
8065350903.8 (0.150)
4.0 (0.157)
4.2 (0.165)
4.4 (0.173)
4.6 (0.181)
4.8 (0.189)
5.0 (0.197)
FWD: Reduction gear shimPart No. Thickness mm (in)
31288AA000 0.15 (0.0059)
Select from one to five shims so that clearance is within
specifications.
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3-2SERVICE PROCEDURE
4. Overall Transmission