1996 SUBARU LEGACY brake

B: TIME LAG TEST
1. GENERAL
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 forward
clutch, reverse clutch, low & reverse brake, forward one-
way clutch and low one-way clutch.
CAUTION:
Perform the test at normal operation fluid tempera-
ture 60 to 80°C (140 to 176°F).
Be sure to allow a one minute interval between tests.
Make three measurements and take the average
value.
2. TEST METHODS
1) Fully apply the parking brake.
2) Start the engine.
Check idling speed (A/C OFF).
“N”range: 800±100 rpm
3) Shift the shift lever from“N”to“D”range.
Using a stop watch, measure the time it takes from shift-
ing the lever until the shock is felt.
Time lag: Less than 1.2 seconds
4) In same manner, measure the time lag for“N”,“R”.
Time lag: Less than 1.5 seconds
3. EVALUATION
1) If“N”,“D”time lag is longer than specified:
Line pressure too low
Forward clutch worn
Low one-way clutch not operating properly
2) If“N”,“R”time lag is longer than specified:
Line pressure too low
Reverse clutch worn
Low & reverse brake worn
Forward one-way clutch not operating properly
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3-2SERVICE PROCEDURE
3. Performance Test

C: LINE PRESSURE TEST
1. GENERAL
If the clutch or the brake band shows a sign of slippage or
shifting sensation is not correct, the line pressure should be
checked.
Excessive 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.
Slippage or inability to operate the vehicle may, in most
cases, be due to loss of oil pressure for the operation of
the clutch, brake band or control valve.
G3M0869
1) Line pressure measurement (under no load)
CAUTION:
Before measuring line pressure, jack-up front
wheels (front-wheel-drive model) or all wheels (4-wheel
drive model).
Maintain temperature of ATF at approximately 50°C
(122°F) during measurement.
(ATF will reach the above temperature after idling the
engine for approximately 30 minutes with select lever
in“N”or“P”.)
G3M0869
2) Line pressure measurement (under heavy load)
CAUTION:
Before measuring line pressure, apply both foot and
parking brakes with all wheels chocked (Same as for
“stall”test conditions).
Measure line pressure when select lever is in“R”,
“2”with engine under stall conditions.
Measure line pressure within 5 seconds after shift-
ing 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 mea-
surement.)
Maintain the temperature of ATF at approximately
50°C (122°F) during measurement. (ATF will reach the
above temperature after idling the engine for approxi-
mately 30 minutes with the select lever in“N”or“P”.)
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3-2SERVICE PROCEDURE
3. Performance Test

G3M0317
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


1Pressure gauge hose


2Hole in toe board (blank cap hole)


3Brake pedal
G3M0869
2) Remove the test plug and install ST1 instead.
3) Connect ST1 with ST2.
ST1 498897200 OIL PRESSURE GAUGE ADAPTER
ST2 498575400 OIL PRESSURE GAUGE ASSY
4) Check for duty ratio changes by opening and closing
throttle valve using select monitor.
5) Check line pressure in accordance with the following
chart.
3. EVALUATION
NOTE:
Under no load:“D”
Under full load:“R”,“2”
(With engine running at stall speed)

Unit: kPa (kg/cm2, psi)
Line pressure
Duty ratio (%)“2”range“R”range“D”range
2200 cc 2500 cc
51,147—1,344
(11.7—13.1, 166—195)1,275—1,569
(13.0—16.0, 185—228)—
22——765—902
(7.8—9.2, 111—131)
100——235—481
(2.4—4.9, 34—70)392—490
(4.0—5.0, 57—71)
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3-2SERVICE PROCEDURE
3. Performance Test

G3M0870
D: TRANSFER CLUTCH PRESSURE TEST
Check transfer clutch pressure in accordance with the fol-
lowing chart in the same manner as with line pressure.
ST 499897700 OIL PRESSURE ADAPTER SET
ST 498575400 OIL PRESSURE GAUGE ASSY
AWD mode:“D”range
FWD mode:“P”range, engine speed 2000 rpm
CAUTION:
Before setting in FWD mode, install spare fuse on FWD
mode switch.
Unit: kPa (kg/cm2, psi)
Duty ratio
(%)AWD mode FWD mode
5667—804
(6.8—8.2, 97—117)667—804
(6.8—8.2, 97—117)
40137—226
(1.4—2.3, 20—33)—
950
(0, 0)—
If oil pressure is not produced or if it does not change in the
AWD mode, the duty solenoid C or transfer valve assem-
bly may be malfunctioning. If oil pressure is produced in the
FWD mode, the problem is similar to that in the AWD
mode.
E: ROAD TEST
1. GENERAL
Road tests should be conducted to properly diagnose the
condition of the automatic transmission.
CAUTION:
When performing test, do not exceed posted speed
limit.
2. CHECKING FOR SHIFT PATTERNS
Check“kick-down”.
D range: 1st
←
→2nd←
→3rd←
→4th
3 range: 1st←
→2nd←
→3rd←4th
2 range: 2nd←3rd←4th
1 range: 1st←2nd←3rd←4th
3. CHECK FOR ENGINE BRAKE OPERATION
Engine brake operation:
D range→4th gear
3 range→3rd gear
2 range→2nd gear
1 range→1st gear
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3-2SERVICE PROCEDURE
3. Performance Test

G3M0346
11) Remove the three accumulator springs.
G3M0347
12) Loosen the reverse clutch drum lightly by turning the
adjusting screw. Then remove the oil pump housing.
CAUTION:
Be careful not to lose the total end play adjusting
thrust washer.
G3M0348
13) Loosen the brake band adjusting screw with ST, and
take out the strut.
ST 398603610 SOCKET WRENCH
G3M0349
14) Remove the brake band and reverse clutch.
NOTE:
Contract the brake band with a clip.
G3M0350
15) Take out the high clutch.
CAUTION:
Thrust needle bearing and bearing race are removed
together with high clutch. Be careful not to lose them.
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3-2SERVICE PROCEDURE
4. Overall Transmission

G3M0880
21) Take out the one-way clutch outer race and the thrust
washer.
G3M0881
22) Take out the overrunning clutch hub, the thrust washer
and the thrust bearing.
G3M0358
23) Take out the forward clutch drum.
G3M0359
24) Take out the low & reverse brake section.
(1) Remove the snap ring. Then remove the retaining
plate, drive plates, driven plates, and dish plates as a
unit.
G3M0360
(2) Turning the case upside down, take out the one-
way clutch inner race and spring retainer.
55
3-2SERVICE PROCEDURE
4. Overall Transmission

G3M0402
(3) Place the spring retainer on the inner race. Install
the spring to the recessed portion of the piston. Then
tighten eight socket head bolts from the rear side of the
transmission case.
Tightening torque:
25±2 N⋅m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
CAUTION:
Be sure to tighten evenly.
G3M0403
8) Install the band servo sub assembly.
9) Press the O.D. servo retainer into position with ST1 and
ST2, and secure with a snap ring.
ST1 498677010 COMPRESSOR
ST2 399703600 PULLER ASSY
CAUTION:
Perform the following operations with the transmis-
sion case set vertically on wooden blocks.
B3H0013A
10) Installation of the low & reverse brake:
(1) Install dish plate, driven plates, drive plates, and a
retaining plate, and secure with a snap ring.
NOTE:
Pay attention to the orientation of the dish plate.
Driven plate : 6
Drive plate : 6
Dish plate : 1


1Snap ring


2Retaining plate


3Transmission case


4Lathe cut seal ring


5Dish plate


6Piston


7Bolt


8Lathe cut seal ring


9Clutch spring retainer


10Forward clutch drum


11Drive plate


12Driven plate
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3-2SERVICE PROCEDURE
4. Overall Transmission

G3M0418
22) Install the brake band.
CAUTION:
Be careful not to damage the brake band when install-
ing.
NOTE:
Install the strut to the band servo piston stem. Then tighten
it temporarily to avoid tilting the band.
23) Adjustment of total end play and reverse clutch end
play
(1) Measure the distance from the transmission case
mating surface to the recessed portion of the high
clutch drum“L”, and the distance to the top surface of
the reverse clutch drum“M”.
G3M0419
71
3-2SERVICE PROCEDURE
4. Overall Transmission