Subaru Legacy III (2000-2003 year). Manual - part 546

AT-78

AUTOMATIC TRANSMISSION

ATF COOLER PIPE AND HOSE

21.ATF Cooler Pipe and Hose

A: REMOVAL

1. EXCEPT 3.0 L MODEL

1) Set the vehicle on a lift.
2) Remove battery and washer tank.
3) Lift-up the vehicle.
4) Remove the under cover.
5) Disconnect ATF cooler hose from radiator.

NOTE:
• Do not remove with a screwdriver or other point-
ed tools.
• When the hose is difficult to remove, wrap a shop
cloth around the hose to protect it. Turn it with pli-
ers, and then pull directly out with your hand.

6) Disconnect ATF cooler hoses from pipes.

NOTE:
• Do not remove with a screwdriver or other point-
ed tools.
• When the hose is difficult to remove, wrap a shop
cloth around the hose to protect it. Turn it with pli-
ers, and then pull directly out with your hand.

7) Remove ATF cooler pipe from frame.

8) Remove the oil cooler inlet and outlet pipes.

NOTE:
When removing outlet pipe, be careful not to lose
ball and spring used with retaining screw.

AT-00703

AT-00683

(A) Inlet pipe

(B) Outlet pipe

AT-00704

AT-00806

( A )

( B )

AT-79

AUTOMATIC TRANSMISSION

ATF COOLER PIPE AND HOSE

2. 3.0 L MODEL

1) Set the vehicle on a lift.
2) Remove battery and washer tank.
3) Lift-up the vehicle.
4) Remove the under cover.
5) Disconnect ATF cooler hose from radiator.

NOTE:
• Do not remove with a screwdriver or other point-
ed tools.
• When the hose is difficult to remove, wrap a shop
cloth around the hose to protect it. Turn it with pli-
ers, and then pull directly out with your hand.

6) Disconnect ATF cooler hoses from transmis-
sion.

NOTE:
• Do not remove with a screwdriver or other point-
ed tools.
• When the hose is difficult to remove, wrap a shop
cloth around the hose to protect it. Turn it with pli-
ers, and then pull directly out with your hand.

7) Remove front left mud guard.
<Ref. to EI-22, REMOVAL, Mud Guard.>
8) Disconnect ATF cooler hoses from ATF filter.

NOTE:
• Do not remove with a screwdriver or other point-
ed tools.

• When the hose is difficult to remove, wrap a shop
cloth around the hose to protect it. Turn it with pli-
ers, and then pull directly out with your hand.

9) Remove AT cooler pipe from frame.

AT-00705

AT-00683

AT-00706

AT-00707

AT-80

AUTOMATIC TRANSMISSION

ATF COOLER PIPE AND HOSE

10) Remove the oil cooler inlet and outlet pipes.

NOTE:
When removing outlet pipe, be careful not to lose
ball and spring used with retaining screw.

B: INSTALLATION

1. EXCEPT 3.0 L MODEL

1) Install the oil cooler outlet and inlet pipes.

NOTE:
Be sure to use a new aluminum washer.

Tightening torque:

T1: 44 N·m (4.5 kgf-m, 32.5 ft-lb)
T2: 25 N·m (2.5 kgf-m, 18.1 ft-lb)

2) Install ATF cooler pipe to frame.

AT-00807

AT-00805

T1

T1

T2

AT-00704

AT-81

AUTOMATIC TRANSMISSION

ATF COOLER PIPE AND HOSE

3) Connect ATF cooler hose to pipe transmission
side.

NOTE:
• Install so that the hose is not folded over, exces-
sively bent, or twisted. 
• Be careful to insert the hose to the specified po-
sition.

4) Connect ATF cooler hose to pipe of radiator
side.

NOTE:
• Install so that the hose is not folded over, exces-
sively bent, or twisted. 
• Be careful to insert the hose to the specified po-
sition.

5) Install the under cover.
6) Install battery and washer tank.
7) Fill ATF. <Ref. to AT-30, Automatic Transmis-
sion Fluid.>

NOTE:
Make sure there are no ATF leaks in joints between
the transmission, radiator, pipes, and hoses.

2. 3.0 L MODEL

1) Install the oil cooler outlet and inlet pipes.

NOTE:
Be sure to use a new aluminum washer.

Tightening torque:

T1: 44 N·m (4.5 kgf-m, 32.5 ft-lb)
T2: 25 N·m (2.5 kgf-m, 18.1 ft-lb)

2) Install ATF cooler pipe to frame.

3) Connect ATF cooler hose to transmission.

NOTE:
• Install so that the hose is not folded over, exces-
sively bent, or twisted. 
• Be careful to insert the hose to the specified po-
sition.

AT-00683

AT-00703

AT-00805

T1

T1

T2

AT-00707

AT-00683