Subaru Legacy (2005 year). Service manual - part 866

AC-33

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

Control Unit (Auto A/C Model)

14.Control Unit (Auto A/C Model)

A: REMOVAL

1) Disconnect the ground cable from battery.
2) Remove the glove box. <Ref. to EI-51, REMOV-
AL, Glove Box.>
3) Remove the screw, disconnect the connector
and remove the control unit.

B: INSTALLATION

Install in the reverse order of removal.

AC-00919

AC-34

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

Compressor

15.Compressor

A: INSPECTION

1. MAGNETIC CLUTCH CLEARANCE

Check the clearance of entire circumference
around the drive plate and pulley.

Standard:

0.45

±

0.15 mm (0.0177

±

0.0059 in)

2. MAGNETIC CLUTCH OPERATION

1) Disconnect the compressor connector.
2) Connect the battery positive (+) terminal to ter-
minal No. 1 of compressor connector, and negative
(

−) terminal to terminal No. 2.

3) Check the magnet clutch engagement.
If NG, replace the compressor.

B: REMOVAL

1) Perform the compressor oil return operation.
<Ref. to AC-25, PROCEDURE, Compressor Oil.>
2) Turn the A/C switch to OFF and stop the engine.
3) Using the refrigerant recovery system, dis-
charge refrigerant. <Ref. to AC-20, PROCEDURE,
Refrigerant Recovery Procedure.>
4) Disconnect the ground cable from battery.
5) Remove the V-belts. <Ref. to ME(H4SO 2.0)-37,
REMOVAL, V-belt.> <Ref. to ME(H4DOTC)-40,
REMOVAL, V-belt.> <Ref. to ME(H6DO)-33, RE-
MOVAL, V-belt.>
6) Remove the generator. <Ref. to SC(H4SO 2.0)-
14, REMOVAL, Generator.> 
7) Remove the bolt and remove the low-pressure
hose and high-pressure hose.

8) Disconnect the compressor harness from body
harness.
9) Remove the bolts and remove compressor
bracket.
• H4 model

• H6 model

10) Remove the bolts, and then remove the bracket
from compressor.

AC-00771

AC-00772

AC-00773

AC-00920

AC-00774

AC-35

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

Compressor

C: INSTALLATION

1) Install in the reverse order of removal.
2) Replace the O-rings on low-/high-pressure hos-
es with new ones, then apply compressor oil.
3) When replacing the compressor, adjust amount
of compressor oil. <Ref. to AC-25, PROCEDURE,
Compressor Oil.>
4) Charge refrigerant. <Ref. to AC-21, PROCE-
DURE, Refrigerant Charging Procedure.>

Tightening torque:

Refer to “COMPONENT” of “General Descrip-
tion”. <Ref. to AC-10, AIR CONDITIONING 
UNIT, COMPONENT, General Description.> 
<Ref. to AC-11, COMPRESSOR, COMPO-
NENT, General Description.>

AC-36

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)

Condenser

16.Condenser

A: REMOVAL

1) Using the refrigerant recovery system, dis-
charge refrigerant. <Ref. to AC-20, PROCEDURE,
Refrigerant Recovery Procedure.>
2) Disconnect the ground cable from battery.
3) Disconnect the pressure hose and pipe from
condenser.

4) Remove the radiator bracket (A) and hood stay
(B).

5) Remove the front grille. <Ref. to EI-24, REMOV-
AL, Front Grille.>
6) Remove two bolts. While lifting condenser, pull it
out through the space between radiator and radia-
tor panel. 

CAUTION:
• Be careful not to damage the condenser fins.
If a damaged fin is found, repair it using a thin
screwdriver. 
• If the condenser is replaced, add an appropri-
ate amount of compressor oil to the compres-
sor. <Ref. to AC-25, REPLACEMENT,
Compressor Oil.>

B: INSTALLATION

1) Install in the reverse order of removal.

CAUTION:
Replace the O-rings on hoses or pipes with new 
ones, and then apply compressor oil. Confirm 
that lower guide of condenser (A) has been fit-
ted into holes on radiator panel. 

2) Charge refrigerant. <Ref. to AC-21, PROCE-
DURE, Refrigerant Charging Procedure.>

Tightening torque:

Refer to “COMPONENT” of “General Descrip-
tion”. <Ref. to AC-10, AIR CONDITIONING 
UNIT, COMPONENT, General Description.> 
<Ref. to CO(H4SO 2.0)-5, RADIATOR AND 
RADIATOR FAN, COMPONENT, General De-
scription.>

C: INSPECTION

1) Check no dust or insects are found on the con-
denser fins. Air-blow or flush fins with water as
needed.
2) Inspect for oil leakage from condenser. If a fail-
ure is found, replace the condenser with a new one. 

AC-00775

AC-00776

(A)

(A)

(B)

AC-00777

AC-00631

(A)