specifications SUBARU LEGACY 1997 Service Manual PDF

6. Control Valve Body
The control valve is composed of parts which are accu-
rately machined to a high degree and should be handled
carefully during disassembly and assembly. As these parts
are similar in shape, they should be arranged in neat order
on a table after disassembly so that they can be easily
installed to their original positions. Spring loaded parts
should be also handled carefully, as springs may jump out
of place when the parts are disassembled or removed.
Extreme care should be taken so as not to drop valves on
the floor. Before assembling, the parts and valves should
be dipped in a container filled with the ATF. Make sure that
the valves are clean and free from any foreign material
before assembly. Torque specifications should also be
observed.
G3M0899

1Lock-up control sleeve


2Lock-up control plug


3Lock-up control valve


4Pilot valve


5Pressure regulator valve


6Pressure regulator plug


7Torque converter regulation valve


8Pressure regulator sleeve plug


9Accumulator control sleeve


10Accumulator control plug


11Shuttle duty shift valve


124-2 sequence valve


13Pressure modifier valve


14Shift valve B


154-2 relay valve


16Shift valve A


17Overrunning clutch control valve

18Overrunning clutch reducing valve


19Shuttle shift valve


20Manual valve


21Forward clutch control valve


221st reducing valve


233-2 timing valve


24Servo charger valve


25Pressure regulator spring


26Pressure modifier spring


27Modifier accumulator spring


28Pilot spring


29Accumulator control spring


30Shift B spring


31Shift A spring


32Shuttle shift spring


33Overrunning clutch control spring


344-2 sequence spring

354-2 relay spring


36Servo charger spring


373-2 timing spring


381st reducing spring


39Overrunning clutch reducing spring


40Torque converter regulator spring


41Lock-up control spring


42Shuttle duty shift spring
85
3-2SERVICE PROCEDURE
6. Control Valve Body

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.
78
3-2SERVICE PROCEDURE
4. Overall Transmission

6. Control Valve Body
The control valve is composed of parts which are accu-
rately machined to a high degree and should be handled
carefully during disassembly and assembly. As these parts
are similar in shape, they should be arranged in neat order
on a table after disassembly so that they can be easily
installed to their original positions. Spring loaded parts
should be also handled carefully, as springs may jump out
of place when the parts are disassembled or removed.
Extreme care should be taken so as not to drop valves on
the floor. Before assembling, the parts and valves should
be dipped in a container filled with the ATF. Make sure that
the valves are clean and free from any foreign material
before assembly. Torque specifications should also be
observed.
G3M0899

1Lock-up control sleeve


2Lock-up control plug


3Lock-up control valve


4Pilot valve


5Pressure regulator valve


6Pressure regulator plug


7Torque converter regulation valve


8Pressure regulator sleeve plug


9Accumulator control sleeve


10Accumulator control plug


11Shuttle duty shift valve


124-2 sequence valve


13Pressure modifier valve


14Shift valve B


154-2 relay valve


16Shift valve A


17Overrunning clutch control valve

18Overrunning clutch reducing valve


19Shuttle shift valve


20Manual valve


21Forward clutch control valve


221st reducing valve


233-2 timing valve


24Servo charger valve


25Pressure regulator spring


26Pressure modifier spring


27Modifier accumulator spring


28Pilot spring


29Accumulator control spring


30Shift B spring


31Shift A spring


32Shuttle shift spring


33Overrunning clutch control spring


344-2 sequence spring

354-2 relay spring


36Servo charger spring


373-2 timing spring


381st reducing spring


39Overrunning clutch reducing spring


40Torque converter regulator spring


41Lock-up control spring


42Shuttle duty shift spring
85
3-2SERVICE PROCEDURE
6. Control Valve Body

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.
78
3-2SERVICE PROCEDURE
4. Overall Transmission

6. Control Valve Body
The control valve is composed of parts which are accu-
rately machined to a high degree and should be handled
carefully during disassembly and assembly. As these parts
are similar in shape, they should be arranged in neat order
on a table after disassembly so that they can be easily
installed to their original positions. Spring loaded parts
should be also handled carefully, as springs may jump out
of place when the parts are disassembled or removed.
Extreme care should be taken so as not to drop valves on
the floor. Before assembling, the parts and valves should
be dipped in a container filled with the ATF. Make sure that
the valves are clean and free from any foreign material
before assembly. Torque specifications should also be
observed.
G3M0899

1Lock-up control sleeve


2Lock-up control plug


3Lock-up control valve


4Pilot valve


5Pressure regulator valve


6Pressure regulator plug


7Torque converter regulation valve


8Pressure regulator sleeve plug


9Accumulator control sleeve


10Accumulator control plug


11Shuttle duty shift valve


124-2 sequence valve


13Pressure modifier valve


14Shift valve B


154-2 relay valve


16Shift valve A


17Overrunning clutch control valve

18Overrunning clutch reducing valve


19Shuttle shift valve


20Manual valve


21Forward clutch control valve


221st reducing valve


233-2 timing valve


24Servo charger valve


25Pressure regulator spring


26Pressure modifier spring


27Modifier accumulator spring


28Pilot spring


29Accumulator control spring


30Shift B spring


31Shift A spring


32Shuttle shift spring


33Overrunning clutch control spring


344-2 sequence spring

354-2 relay spring


36Servo charger spring


373-2 timing spring


381st reducing spring


39Overrunning clutch reducing spring


40Torque converter regulator spring


41Lock-up control spring


42Shuttle duty shift spring
85
3-2SERVICE PROCEDURE
6. Control Valve Body

1. AWD System
A. SPECIFICATIONS
1. REAR FINAL REDUCTION GEAR RATIO
Type of gearHypoid
MT AT
2200 cc 2500 cc 2200 cc 2500 cc
Gear ratio
(Number of
gear teeth)3.900
(39/10)4 . 111
(37/9)4.444
(40/9)
Oil capacity 0.8
(0.8 US qt, 0.7 Imp qt)
Rear
differential
gear oilGL-5
2. PROPELLER SHAFT
Front propeller shaft
Joint-to-joint length:
L mm (in)AT 539 (21.22)
MT 598 (23.54)
Outside dia. of tube
mm (in)D
163.5 (2.500)
D
257.0 (2.244)
G3M0014
2
3-4SPECIFICATIONS AND SERVICE DATA
1. AWD System