Subaru Legacy (2005 year). Service manual — part 30

PM-27

PERIODIC MAINTENANCE SERVICES

Automatic Transmission Fluid

14.Automatic Transmission Flu-

id

A: INSPECTION

CAUTION:
The level of ATF varies with fluid temperature.
Pay attention to the fluid temperature when
checking ATF level.
1) Raise the ATF temperature by driving a distance
of 5 to 10 km (3 to 6 miles). Otherwise, idle the en-
gine to raise ATF temperature to 70 — 80

°C (158

— 176

°F) on Subaru Select Monitor. <Ref. to

4AT(diag)-16, READ CURRENT DATA, OPERA-
TION, Subaru Select Monitor.>
2) Make sure the vehicle is level.
3) After selecting all positions (P, R, N, D), shift the
select lever in “P” range. Measure the ATF level
with engine idling for one or two minutes.
• 4AT model

• 5AT model

4) Make sure that ATF level is above the center of
upper and lower marks at “HOT” side.
5) If the ATF level is below the center between up-
per and lower marks, add the recommended ATF
until the fluid level is found above the center be-
tween upper and lower marks.

CAUTION:
• Use care not to exceed the upper limit level.
• Addition of ATF to the upper limit mark on
“HOT” side when the ATF temperature is below
70

°C (158°F) will overfilling of ATF, causing a

transmission failure.
6) Check ATF level after raising ATF temperature
to 70 — 80

°C (158 — 176°F) by running the vehicle

or by idling the engine again.
7) Check the ATF for leaks.
Check for leaks in the transmission. If there are
leaks, it is necessary to repair or replace gasket, oil
seals, plugs or other parts.

(A) Level gauge

(B) ATF level range at “HOT” [70 — 80

°C (158 —

176

°F)]

(C) Upper level

(D) Lower level

(E) ATF level range at “COLD” [20 — 30

°C (68 —

86

°F)]

PI-00189

COLD

LF

HOT

LF

(A)

(C)

(D)

(C)

(D)

(E)

(B)

(A) Level gauge

(B) ATF level range at “HOT” [70 — 80

°C (158 —

176

°F)]

(C) Upper level

(D) Lower level

(E) ATF level range at “COLD” [20 — 30

°C (68 —

86

°F)]

PI-00190

(A)

(C)

(D)

(E)

(D)

(C)

(B)

(A)

F

L

F

HO

T

L

COLD

PM-28

PERIODIC MAINTENANCE SERVICES

Automatic Transmission Fluid

B: REPLACEMENT

1. AUTOMATIC TRANSMISSION FLUID

1) Drain the ATF by removing drain plug.

NOTE:
• Before starting work, cool off the ATF well.
• If the ATF gets on the exhaust pipe, wipe it off.
• 4AT model

• 5AT model

2) Replace the gasket with new one, and then tight-
en the drain plug to specified torque.

Tightening torque:

4AT model

25 N

⋅

m (2.5 kgf-m, 18.4 ft-lb)

5AT model

20 N

⋅

m (2.0 kgf-m, 14.8 ft-lb)

3) Pour ATF from the ATF charge pipe.

Recommended ATF:

Refer to “RM” section. <Ref. to RM-5, FLUID,
RECOMMENDED MATERIALS, Recommend-
ed Materials.>

Capacity:

Fill the same amount of ATF drained.

4) Check the ATF level. <Ref. to PM-27, INSPEC-
TION, Automatic Transmission Fluid.>
• 4AT model

• 5AT model

2. ATF FILTER

NOTE:
Basically ATF filter is maintenance free, but when it
has physically damaged or ATF leaked, the ATF fil-
ter needs replacement.
For the replacement procedure of ATF filter, refer
to “ATF FILTER”.
• 4AT model
<Ref. to 4AT-65, ATF Filter.>
• 5AT model
<Ref. to 5AT-60, ATF Filter.>

(A) Front differential gear oil drain plug

(B) ATF drain plug

(A) ATF drain plug

(B)

PM-00167

(A)

PM-00168

(A)

(A) Level gauge

(B) ATF level range at “HOT” [70 — 80

°C (158 —

176

°F)]

(C) Upper level

(D) Lower level

(E) ATF level range at “COLD” [20 — 30

°C (68 —

86

°F)]

(A) Level gauge

(B) ATF level range at “HOT” [70 — 80

°C (158 —

176

°F)]

(C) Upper level

(D) Lower level

(E) ATF level range at “COLD” [20 — 30

°C (68 —

86

°F)]

PI-00189

COLD

LF

HOT

LF

(A)

(C)

(D)

(C)

(D)

(E)

(B)

PI-00190

(A)

(C)

(D)

(E)

(D)

(C)

(B)

(A)

F

L

F

HO

T

L

COLD

PM-29

PERIODIC MAINTENANCE SERVICES

Front & Rear Differential Gear Oil

15.Front & Rear Differential Gear

Oil

A: REPLACEMENT

1. FRONT DIFFERENTIAL (MT MODEL)

Front differential gear oil for MT model lubricates
the transmission and differential together. Refer to
“Transmission Oil” for replacement procedure.
<Ref. to PM-26, Transmission Gear Oil.>

2. FRONT DIFFERENTIAL (AT MODEL)

1) Drain the differential gear oil by removing drain
plug using TORX

®

BIT T70.

NOTE:
• Before starting work, cool off the differential gear
oil well.
• If front differential gear oil adheres to the exhaust
pipe, wipe it off completely.
• 4AT model

• 5AT model

2) Replace the gasket with new one, and then tight-
en the drain plug to specified torque.

Tightening torque:

44 N

⋅

m (4.5 kgf-m, 32.5 ft-lb) (Copper gasket)

70 N

⋅

m (7.1 kgf-m, 51.6 ft-lb) (Alminum gas-

ket)

3) Fill differential gear oil through the oil level
gauge hole up to the upper point of level gauge.

Recommended gear oil:

Refer to “RM” section. <Ref. to RM-3, LUBRI-
CANTS, RECOMMENDED MATERIALS, Rec-
ommended Materials.>

NOTE:
Each oil manufacturer has its base oil and addi-
tives. Thus, do not mix two or more brands.

Differential gear oil capacity:

4AT model

1.1 — 1.3

2 (1.2 — 1.4 US qt, 1.0 — 1.1 Imp

qt)

5AT model

1.3 — 1.5

2 (1.4 — 1.6 US qt, 1.1 — 1.3 Imp

qt)

3. REAR DIFFERENTIAL

1) Drain the oil by removing drain plug.
2) Remove the filler plug for quick draining oil.
3) Install the drain plug after draining oil.

NOTE:
• Apply liquid gasket to the drain plug threads for
T-type.
• Use a new gasket for VA-type.

PM-00169

PM-00170

(A) Oil level gauge

(B) Upper level

(C) Lower level

(A) Oil level gauge

(B) Upper level

(C) Lower level

PI-00183

(B)

(C)

(A)

(A)

PI-00184

(A)

(C)

(B)

(A)

F

L

PM-30

PERIODIC MAINTENANCE SERVICES

Front & Rear Differential Gear Oil

Liquid gasket:

THREE BOND 1105 (Part No. 004403010)

Tightening torque:

T-type

49 N

⋅

m (5.0 kgf-m, 36.2 ft-lb)

VA1-type

34 N

⋅

m (3.5 kgf-m, 25.3 ft-lb)

VA2-type

29 N

⋅

m (3.0 kgf-m, 21.4 ft-lb)

4) Pour oil to the bottom end of filler plug hole.

Recommended gear oil:

Refer to “RM” section. <Ref. to RM-3, LUBRI-
CANTS, RECOMMENDED MATERIALS, Rec-
ommended Materials.>

• Except for VA2-type

• VA2-type

Oil capacity:

0.8

2 (0.8 US qt, 0.7 Imp qt)

NOTE:
Each oil manufacturer has its base oil and addi-
tives. Thus, do not mix two or more brands.
5) Install the filler plug.

NOTE:
• Apply liquid gasket to the filer plug threads for T-
type.

• Use a new aluminum gasket for VA-type.

Liquid gasket:

THREE BOND 1105 (Part No. 004403010)

Tightening torque:

T-type

49 N

⋅

m (5.0 kgf-m, 36.2 ft-lb)

VA1-type

34 N

⋅

m (3.5 kgf-m, 25.3 ft-lb)

VA2-type

29 N

⋅

m (3.0 kgf-m, 21.4 ft-lb)

(A) Filler plug

(B) Drain plug

(A) Filler plug

(B) Drain plug

PM-00037

(A)

(B)

(B)

DI-00355

(A)