Subaru Legacy IV (2008 year). Manual - part 981

AC-27

Compressor Oil

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

6. Compressor Oil

A: PROCEDURE

NOTE:
Before making repairs, perform the oil return oper-
ation to return the compressor oil in circulation with
the refrigerant to the compressor.
1) Increase the engine to 1,500 rpm.
2) Turn on the A/C switch.
3) Turn the temperature control switch to MAX
COOL.
4) Put in RECIRC position.
5) Turn the blower control switch to HI.
6) Leave in this condition for 10 minutes.

B: REPLACEMENT

NOTE:
• If a component has been replaced, add an ap-
propriate amount of compressor oil (same as the
amount of remaining oil in removed component).
• When replacing the compressor, the new com-
pressor will already have the specified amount of
oil in it. Adjust the oil amount (so that the amount
remains the same as that of the removed compres-
sor) and install the new compressor.
• Since the hygroscopicity of compressor oil is
high, perform this series of works quickly.

AC-28

Blower Motor Unit Assembly

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

7. Blower Motor Unit Assembly

A: REMOVAL

1) Disconnect the ground cable from the battery.
2) Remove the glove box. <Ref. to EI-52, REMOV-
AL, Glove Box.>
3) Disconnect the connectors of the A/C control
module, intake door actuator, blower motor, power
transistor and blower resistor.
4) Loosen the bolt and nut to remove blower motor
unit assembly.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

Refer to “COMPONENT” of “General Descrip-
tion”. <Ref. to AC-6, HEATER COOLING 
UNIT, COMPONENT, General Description.> 
<Ref. to AC-9, BLOWER MOTOR UNIT, COM-
PONENT, General Description.>

AC-00914

AC-29

Blower Motor

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

8. Blower Motor

A: REMOVAL

1) Disconnect the ground cable from the battery.
2) Remove the glove box lower cover. <Ref. to EI-
52, REMOVAL, Glove Box.>
3) Disconnect the connector of the blower motor.
4) Loosen the screw to remove the blower motor.

B: INSTALLATION

Install in the reverse order of removal.

C: INSPECTION

Connect the battery positive (+) terminal to terminal
No. 2 of blower motor connector, and negative (–)
terminal to terminal No. 1. Check the blower motor
for smooth rotation.

AC-00957

AC-00915

1

2

AC-30

Power Transistor (Auto A/C Model)

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

9. Power Transistor (Auto A/C 

Model)

A: REMOVAL

1) Remove the glove box lower cover. <Ref. to EI-
52, REMOVAL, Glove Box.>
2) Disconnect the power transistor connector.
3) Remove the two screws and remove the power
transistor.

B: INSTALLATION

Install in the reverse order of removal.

AC-00916