Subaru Legacy IV (2008 year). Manual - part 728

5AT-36

Line Pressure Test

AUTOMATIC TRANSMISSION

7) Perform the line pressure test.

NOTE:
• Do not perform the line pressure test for 5 sec-
onds or more at a time. Doing so will make the en-
gine oil and ATF deteriorate and the clutch and
brake to be adversely affected.
• After performing the line pressure test, be sure to
cool down the engine for at least one minute with
the select lever set in “P” or “N” range and with the
idle speed at 1,200 rpm or less.
• Fully open or fully close the throttle valve angle in
order to match the “P/L Solenoid Pressure” dis-
played on the Subaru Select Monitor.

8) Remove the ST and install the test plug.

Tightening torque:

13 N·m (1.3 kgf-m, 9.6 ft-lb)

Range of the select 

lever

Throttle valve 

angle

ATF temperature 

condition

“P/L Solenoid Pressure” displayed 

on the Subaru Select Monitor

kPa

Standard line pressure

kPa (kg/cm

2

, psi)

2nd gear of manual 

mode

Full closed

45 — 55°C

(113 — 131°F)

500 — 700

Target pressure –10 — +190

(Target pressure –0.10 — +1.94, 

Target pressure –1.45 — +27.5)

Full open

2,150

1,320 — 1,520

(13.46 — 15.50, 191.4 — 220.4)

R

Full closed

2,150

1,660 — 1,860

(16.93 — 18.97, 240.7 — 269.7)

5AT-37

Transfer Clutch Pressure Test

AUTOMATIC TRANSMISSION

8. Transfer Clutch Pressure 

Test

A: INSPECTION

1) Lift up the vehicle.
2) Remove the bolts holding the heat shield cover,
and move the heat shield cover to the rear.
3) Remove the test plug and attach the ST.

CAUTION:
Be careful not to cut yourself on the heat shield
cover when removing the test plugs and setting
the ST.
ST

498897800

OIL PRESSURE ADAPTER 
SET

4) Set the ST.
ST

498575400

OIL PRESSURE GAUGE 
ASSY

5) Lower the vehicle, and pull ST, which were set in
step 4), into the vehicle.
6) Connect the Subaru Select Monitor to the data
link connector and read the current data. <Ref. to
5AT(diag)-18, READ CURRENT DATA, OPERA-
TION, Subaru Select Monitor.>

AT-03275

5AT-38

Transfer Clutch Pressure Test

AUTOMATIC TRANSMISSION

7) Perform the transfer clutch pressure test.

NOTE:
• Do not perform the transfer clutch pressure test
for 5 seconds or more at a time. Doing so will make
the engine oil and ATF deteriorate and the clutch
and brake to be adversely affected.
• After performing the transfer clutch pressure
test, be sure to cool down the engine for at least
one minute with the select lever set in the “P” or “N”
range, and at an idle speed of 1,200 rpm or less.
• Adjust the throttle valve angle in order to obtain
the “T/F Solenoid Pressure” displayed on the Sub-
aru Select Monitor.

8) Remove the ST and install the test plug.

Tightening torque:

13 N·m (1.3 kgf-m, 9.6 ft-lb)

9) Install the heat shield cover.

Range of the select 

lever

Throttle valve 

angle

ATF temperature 

condition

“T/F Solenoid Pressure” displayed 

on the Subaru Select Monitor

kPa

Standard transfer clutch pressure

kPa (kg/cm

2

, psi)

2nd gear of manual 

mode

Full open

45 — 55°C

(113 — 131°F)

1,200

990 — 1,190

(10.09 — 12.13, 143.5 — 172.5)

Partial throttle

500

400 — 600

(4.08 — 6.12, 58.0 — 87.0)

N

Full closed

0

0 — 50

(0 — 0.51, 0 — 7.3)

5AT-39

Automatic Transmission Assembly

AUTOMATIC TRANSMISSION

9. Automatic Transmission 

Assembly

A: REMOVAL

1) Set the vehicle on a lift.
2) Open the front hood and support with the hood
stay.
3) Disconnect the ground cable from battery.
4) Remove the collector cover.
5) Remove the intercooler. (Turbo model)
<Ref. to IN(H4DOTC)-12, REMOVAL, Intercool-
er.>
6) Remove the air intake chamber and intake boot.
(Non-turbo model) <Ref. to IN(H6DO)-7, REMOV-
AL, Air Intake Chamber.>
7) Remove the air breather hose. <Ref. to 5AT-65,
REMOVAL, Air Breather Hose.>
8) Remove the starter. <Ref. to SC(H4SO)-6, RE-
MOVAL, Starter.>
9) Disconnect the following connectors.
• Turbo model

• Non-turbo model

10) Remove the engine hanger. (Turbo model)

11) Disconnect the engine harness connectors,
and then remove the engine hanger rear. (Non-tur-
bo model)

12) Remove the water by-pass pipe. (Turbo model)

(1) Rear oxygen sensor connector

(2) Transmission harness connectors

(1) Front oxygen (A/F) and rear oxygen sensor 

connector

(2) Transmission harness connectors

AT-04406

(1)

(2)

(2)

(2)

AT-04383

(2)

(2)

(2)

(1)

(1)

(1)

(A) Engine harness connectors

(B) Engine hanger rear

AT-04407

(B)

(A)

(A)

AT-02023

AT-01366