Subaru Legacy (2005 year). Service manual — part 524

4AT-77

AUTOMATIC TRANSMISSION

Warmer Cock

25.Warmer Cock

A: REMOVAL

1) Remove the air intake chamber. <Ref. to
IN(H4SO 2.0)-7, REMOVAL, Air Intake Chamber.>
2) Remove all the hoses from warmer cock.

3) Remove the warmer cock.

4) Remove the throttle body as necessary, and re-
move the bracket.

B: INSTALLATION

1) Install the bracket, and install the throttle body.

Tightening torque:

16 N

⋅

m (1.6 kgf-m, 11.6 ft-lb)

2) Install the warmer cock.

Tightening torque:

T1: 6.4 N

⋅

m (0.65 kgf-m, 4.7 ft-lb)

T2: 15 N

⋅

m (1.5 kgf-m, 10.8 ft-lb)

3) Connect the hoses to warmer cock.

4) Install the air intake chamber.
<Ref. to IN(H4SO 2.0)-7, INSTALLATION, Air In-
take Chamber.>

AT-02163

AT-02165

AT-02166

AT-02166

AT-02168

T1

T2

AT-02163

4AT-78

AUTOMATIC TRANSMISSION

Warmer Cock

C: DISASSEMBLY

Remove the bolt of warmer cock, and remove the
thermostat.

D: ASSEMBLY

Assemble in the reverse order.

Tightening torque:

6.4 N

⋅

m (0.65 kgf-m, 4.7 ft-lb)

E: INSPECTION

Replace the thermostat if the valve does not close
completely at an ambient temperature or if the fol-
lowing test shows unsatisfactory results.
• Inspection method
Immerse the thermostat and a thermometer in wa-
ter. Raise water temperature gradually, and mea-
sure the temperature and valve lift when the valve
begins to open and when the valve is fully opened.
During the test, agitate the water for even temper-
ature distribution. The measured value should
meet the specification.

Starting temperature to open:

69 — 73

°

C (156 — 163

°

F)

Fully opens:

84

°

C (183

°

F)

Valve lift:

9.0 mm (0.354 in) or more

(A) Thermometer

(B) Thermostat

AT-02177

CO-00033

( A )

( B )

4AT-79

AUTOMATIC TRANSMISSION

Air Breather Hose

26.Air Breather Hose

A: REMOVAL

1) Remove the air intake chamber.
<Ref. to IN(H4SO 2.0)-7, REMOVAL, Air Intake
Chamber.>
2) Disconnect the air breather hose.

B: INSTALLATION

1) Install the air breather hose.

2) Install the air intake chamber.
<Ref. to IN(H4SO 2.0)-7, INSTALLATION, Air In-
take Chamber.>

C: INSPECTION

Make sure the hose is not cracked or clogged.

(A) Air breather hose (Transmission case)

(B) Air breather hose (Oil pump housing)

(A) Air breather hose (Transmission case)

(B) Air breather hose (Oil pump housing)

AT-00099

AT-00099

4AT-80

AUTOMATIC TRANSMISSION

Oil Charge Pipe

27.Oil Charge Pipe

A: REMOVAL

1) Remove the air intake chamber.
<Ref. to IN(H4SO 2.0)-7, REMOVAL, Air Intake
Chamber.>
2) Remove the oil charge pipe, and then remove
the O-ring from flange side.
• Model with ATF cooler with warmer function

• Model without ATF cooler with warmer function

B: INSTALLATION

1) Install the oil charge pipe with a new O-ring ap-
plied with ATF.
• Model with ATF cooler with warmer function

Tightening torque:

41 N

⋅

m (4.2 kgf-m, 30.4 ft-lb)

• Model without ATF cooler with warmer function

Tightening torque:

41 N

⋅

m (4.2 kgf-m, 30.4 ft-lb)

2) Install the air intake chamber.
<Ref. to IN(H4SO 2.0)-7, INSTALLATION, Air In-
take Chamber.>

C: INSPECTION

Make sure the oil charge pipe is not deformed or
damaged.

(A) Oil level gauge

(B) Oil charge pipe

(A) Oil level gauge

(B) Oil charge pipe

(A)

(B)

AT-02178

AT-03202

(A)

(B)

(A) Oil level gauge

(B) Oil charge pipe

(A) Oil level gauge

(B) Oil charge pipe

(A)

(B)

AT-02178

AT-03202

(A)

(B)