SUBARU LEGACY 1999 Service Repair Manual

8. Time Lag Test
A: INSPECTION
1. GENERAL INFORMATION
If the shift lever is shifted while the engine is idling,
there will be a certain time elapse or lag before the
shock can be felt. This is used for checking the
condition of the low clutch, reverse clutch, low &
reverse brake and one-way clutch.
CAUTION:
IPerform the test at normal operation fluid
temperature 60 to 80ÉC (140 to 176ÉF).
IBe sure to allow a one minute interval
between tests.
IMake three measurements and take the aver-
age value.
2. TEST METHODS
1) Fully apply the parking brake.
2) Start the engine.
Check idling speed (A/C OFF).
ªNº range: 800±100 rpm
3) Shift the shift lever from ªNº to ªDº range.
Using a stop watch, measure the time it takes from
shifting the lever until the shock is felt.
Time lag: Less than 1.2 seconds
4) In same manner, measure the time lag for ªNº
®ªRº.
Time lag: Less than 1.5 seconds
3. EVALUATION
1) If ªNº®ªDº time lag is longer than specified:
ILine pressure too low
ILow clutch worn
IOne-way clutch not operating properly
2) If ªNº®ªRº time lag is longer than specified:
ILine pressure too low
IReverse clutch worn
ILow & reverse brake worn
9. Line Pressure Test
A: MEASUREMENT
1. GENERAL INFORMATION
If the clutch or the brake shows a sign of slippage
or shifting sensation is not correct, the line pres-
sure should be checked.
IExcessive shocks during upshifting or shifting
takes place at a higher point than under normal
circumstances, may be due to the line pressure
being too high.
ISlippage or inability to operate the vehicle may,
in most cases, be due to loss of oil pressure for the
operation of the clutch, brake or control valve.
1) Line pressure measurement (under no load)
CAUTION:
IBefore measuring line pressure, jack-up all
wheels.
IMaintain temperature of ATF at approxi-
mately 50ÉC (122ÉF) during measurement.
(ATF will reach the above temperature after
idling the engine for approximately 30 minutes
with select lever in ªNº or ªPº.)
2) Line pressure measurement (under heavy load)
CAUTION:
IBefore measuring line pressure, apply both
foot and parking brakes with all wheels
chocked (Same as for ªstallº test conditions).
IMeasure line pressure when select lever is in
ªRº, ª2º with engine under stall conditions.
IMeasure line pressure within 5 seconds after
shifting the select lever to each position. (If line
pressure needs to be measured again, allow
the engine to idle and then stop. Wait for at
least one minute before measurement.)
IMaintain the temperature of ATF at approxi-
mately 50ÉC (122ÉF) during measurement. (ATF
will reach the above temperature after idling
the engine for approximately 30 minutes with
the select lever in ªNº or ªPº.)
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[W9A1]3-2SERVICE PROCEDURE
9. Line Pressure Test

8. Time Lag Test
A: INSPECTION
1. GENERAL INFORMATION
If the shift lever is shifted while the engine is idling,
there will be a certain time elapse or lag before the
shock can be felt. This is used for checking the
condition of the low clutch, reverse clutch, low &
reverse brake and one-way clutch.
CAUTION:
IPerform the test at normal operation fluid
temperature 60 to 80ÉC (140 to 176ÉF).
IBe sure to allow a one minute interval
between tests.
IMake three measurements and take the aver-
age value.
2. TEST METHODS
1) Fully apply the parking brake.
2) Start the engine.
Check idling speed (A/C OFF).
ªNº range: 800±100 rpm
3) Shift the shift lever from ªNº to ªDº range.
Using a stop watch, measure the time it takes from
shifting the lever until the shock is felt.
Time lag: Less than 1.2 seconds
4) In same manner, measure the time lag for ªNº
®ªRº.
Time lag: Less than 1.5 seconds
3. EVALUATION
1) If ªNº®ªDº time lag is longer than specified:
ILine pressure too low
ILow clutch worn
IOne-way clutch not operating properly
2) If ªNº®ªRº time lag is longer than specified:
ILine pressure too low
IReverse clutch worn
ILow & reverse brake worn
9. Line Pressure Test
A: MEASUREMENT
1. GENERAL INFORMATION
If the clutch or the brake shows a sign of slippage
or shifting sensation is not correct, the line pres-
sure should be checked.
IExcessive shocks during upshifting or shifting
takes place at a higher point than under normal
circumstances, may be due to the line pressure
being too high.
ISlippage or inability to operate the vehicle may,
in most cases, be due to loss of oil pressure for the
operation of the clutch, brake or control valve.
1) Line pressure measurement (under no load)
CAUTION:
IBefore measuring line pressure, jack-up all
wheels.
IMaintain temperature of ATF at approxi-
mately 50ÉC (122ÉF) during measurement.
(ATF will reach the above temperature after
idling the engine for approximately 30 minutes
with select lever in ªNº or ªPº.)
2) Line pressure measurement (under heavy load)
CAUTION:
IBefore measuring line pressure, apply both
foot and parking brakes with all wheels
chocked (Same as for ªstallº test conditions).
IMeasure line pressure when select lever is in
ªRº, ª2º with engine under stall conditions.
IMeasure line pressure within 5 seconds after
shifting the select lever to each position. (If line
pressure needs to be measured again, allow
the engine to idle and then stop. Wait for at
least one minute before measurement.)
IMaintain the temperature of ATF at approxi-
mately 50ÉC (122ÉF) during measurement. (ATF
will reach the above temperature after idling
the engine for approximately 30 minutes with
the select lever in ªNº or ªPº.)
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[W9A1]3-2SERVICE PROCEDURE
9. Line Pressure Test

2. TEST METHODS
1) Temporarily attach the ST to a suitable place in
the driver's compartment, remove the blind plug
located in front of the toe board and pass the hose
of the ST to the engine compartment.
ST 498575400 OIL PRESSURE GAUGE
ASSY
B3M0568C
(A) Pressure gauge hose
(B) Hole in toe board (blank cap hole)
(C) Brake pedal
2) Remove the test plug and install ST instead.
ST 498897200 OIL PRESSURE GAUGE
ADAPTER
B3M1046A
3) Connect ST1 with ST2.
ST1 498897200 OIL PRESSURE GAUGE
ADAPTER
ST2 498575400 OIL PRESSURE GAUGE
ASSY4) Check for duty ratio changes by opening and
closing throttle valve using Subaru Select Monitor.
(1) Insert the cartridge to Subaru Select Moni-
tor.
ST 24082AA090 CARTRIDGE
S2M0286A
(2) Connect Subaru Select Monitor to data link
connector.
5) Check line pressure in accordance with the fol-
lowing chart.
3. EVALUATION
NOTE:
IUnder no load: ªDº
IUnder full load: ªRº, ª2º
(With engine running at stall speed)
Standard line pressure
Range
positionLine pressure
duty ratio (%)Line pressure
kPa (kg/cm
2, psi)
251,128 Ð 1,304
(11.5 Ð 13.3, 164 Ð 189)
R51,520 Ð 1,716
(15.5 Ð 17.5, 220 Ð 249)
D95304 Ð 412
(3.1 Ð 4.2, 44 Ð 60)
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3-2[W9A2]SERVICE PROCEDURE
9. Line Pressure Test

10. Transfer Clutch Pressure
Test
A: MEASUREMENT
1. TEST METHODS
Check transfer clutch pressure in accordance with
the following chart in the same manner as with line
pressure.
ST 499897700 OIL PRESSURE ADAPTER
SET
ST 498575400 OIL PRESSURE GAUGE
ASSY
AWD mode: ªDº range
FWD mode: ªPº range, engine speed 2,000 rpm
CAUTION:
Before setting in FWD mode, install spare fuse
on FWD mode switch.
B3M1047
2. EVALUATION
NOTE:
If oil pressure is not produced or if it does not
change in the AWD mode, the duty solenoid C or
transfer valve assembly may be malfunctioning. If
oil pressure is produced in the FWD mode, the
problem is similar to that in the AWD mode.
Standard transfer clutch pressure kPa (kg/cm2, psi)
Duty ratio
(%)AWD mode FWD mode
5951 Ð 1,089
(9.7 Ð 11.1, 138 Ð 158)Ð
60226 Ð 294
(2.3 Ð 3.0, 33 Ð 43)Ð
95 Ð 0 (0, 0)
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[W10A2]3-2SERVICE PROCEDURE
10. Transfer Clutch Pressure Test

11. Overall Transmission
A: SECTIONS THAT CAN BE DETACHED/ASSEMBLED
H3M1250A
B: DISASSEMBLY
1. EXTERNAL PARTS
1) Place the transmission unit on a work bench,
with the oil pan facing down.
CAUTION:
Be careful not to bend or damage external
parts.
B3M1048A
2) Remove the drain plug, and drain differential oil.
Tighten the plug temporarily after draining.
3) Remove the drain plug, and drain automatic
transmission fluid (ATF). Tighten the plug tempo-
rarily after draining.
B3M1036A
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3-2[W11A0]SERVICE PROCEDURE
11. Overall Transmission

4) Extract the torque converter clutch assembly.
NOTE:
IExtract the torque converter clutch horizontally.
Be careful not to scratch the bushing inside the oil
pump shaft.
INote that oil pump shaft also comes out.
B3M1049A
5) Remove the input shaft.
B3M1050A
6) Remove the pitching stopper bracket.
B3M0629
7) Remove harnesses from bracket.
B3M1054A
(A) Transmission harness
(B) Inhibitor switch harness
8) Disconnect the air breather hose.
B3M1051A
(A) Air breather hose (Transmission case)
(B) Air breather hose (Oil pump housing)
9) Remove the oil charger pipe, and remove the
O-ring from the flange face. Attach the O-ring to the
pipe.
B3M1052A
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[W11B1]3-2SERVICE PROCEDURE
11. Overall Transmission

10) Remove the oil cooler inlet and outlet pipes.
CAUTION:
When removing outlet pipes, be careful not to
lose balls and springs used with retaining
screws.
B3M1053A
2. SEPARATION OF EACH SECTION
1) Separation of torque converter clutch case and
transmission case sections
CAUTION:
IBe careful not to damage the oil seal and
bushing inside the torque converter clutch
case by the oil pump cover.
IBe careful not to lose the rubber seal.
NOTE:
Separate these cases while tapping lightly on the
housing.
B3M1055A
2) Separation of transmission case and extension
sections
(1) Remove vehicle speed sensor 1 (rear).
B3M1056A
(2) Separation of transmission case and exten-
sion case sections
B3M1057A
3. TRANSMISSION CASE SECTION
1) Remove the reduction driven gear.
(1) Straighten the staked portion, and remove
the lock nut.
NOTE:
Set the range selector lever to ªPº.
B3M1058A
(2) Using the ST1 and ST2, extract the reduc-
tion driven gear.
NOTE:
ST1 499737000 PULLER
ST2 899524100 PULLER SET
B3M0954A
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3-2[W11B2]SERVICE PROCEDURE
11. Overall Transmission

(3) Using the ST, extract the reduction drive
gear.
ST 499737100 PULLER SET
B3M0953A
2) Remove transfer valve body and duty solenoid
C (Transfer).
(1) Disconnect connector from duty solenoid C
(Transfer).
(2) Remove transfer valve body and duty sole-
noid C (Transfer).
B2M2264
(3) Pull out inlet filter
B3M1061A
3) Remove the parking pawl, return spring and
shaft.
B3M1062A
4) Loosen the taper roller bearing mounting bolts.
B3M1063
5) Place two wooden blocks on the workbench,
and stand the transmission case with its rear end
facing down.
CAUTION:
IBe careful not to scratch the rear mating sur-
face of the transmission case.
INote that the parking rod and drive pinion
protrude from the mating surface.
B3M1064A
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[W11B3]3-2SERVICE PROCEDURE
11. Overall Transmission

6) Remove the oil pan.
NOTE:
Use a scraper to remove oil pan.
B3M1065A
7) Disconnect the harness connectors for the
solenoids, duty solenoids, ATF temperature sensor
and the ground cord.
B2M2263C
(A) Lock-up duty solenoid (Blue)
(B) Low clutch timing solenoid (Gray)
(C) Line pressure duty solenoid (Red)
(D) Shift solenoid 2 (Yellow)
(E) Shift solenoid 1 (Green)
(F) 2-4 brake timing solenoid (Black)
(G) 2-4 brake duty solenoid (Red)
(H) ATF temperature sensor
8) Remove the control valve body.
CAUTION:
When removing control valve body, be careful
not to interfere with transfer duty solenoid C
wiring.
B3M1037A
9) Remove vehicle speed sensor 2 (front) and
torque converter turbine speed sensor.
B3M1066A
10) Remove transmission harness.
B3M1067A
11) Remove the oil pump housing.
CAUTION:
Be careful not to lose the total end play adjust-
ing thrust washer.
B3M1068A
12) Remove 2-4 brake seal.
B3M1069A
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3-2[W11B3]SERVICE PROCEDURE
11. Overall Transmission

13) Take out the high clutch and reverse clutch
assembly.
CAUTION:
Be careful not to lose thrust needle bearing.
B3M1070A
14) Take out the high clutch hub and the thrust
bearing.
B3M1071A
15) Take out the front sun gear and the thrust
bearing.
B3M1072A
16) Pull out leaf spring.
CAUTION:
Be careful not to bend leaf spring during
removal.
NOTE:
Remove it while pressing down on lower leaf
spring.
B3M1073A
17) Remove snap ring and thrust needle bearing.
B3M1074A
18) Take out retaining plate, drive plate and driven
plate of 2-4 brake.
B3M1075
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[W11B3]3-2SERVICE PROCEDURE
11. Overall Transmission