Subaru Legacy IV (2008 year). Service manual — part 975
AC-3
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Condenser fan (Sub fan)
Motor type
Magnet
Power consumption
2.5 L SOHC Non-turbo model: 90 W
2.5 L DOHC Turbo model: 120 W
3.0 L DOHC Non-turbo model: 160 W
Fan outer diameter
2.5 L SOHC Non-turbo model: 300 mm (11.8 in)
2.5 L DOHC Turbo and 3.0 L DOHC Non-turbo model:
320 mm (12.6 in)
Radiator fan (Main fan)
Motor type
Magnet
Power consumption
2.5 L SOHC Non-turbo model: 90 W
2.5 L DOHC Turbo model: 120 W
3.0 L DOHC Non-turbo model: 160 W
Fan outer diameter
2.5 L SOHC Non-turbo model: 300 mm (11.8 in)
2.5 L DOHC Turbo and 3.0 L DOHC Non-turbo model:
320 mm (12.6 in)
Idle speed
MPFI model
2.5 L Non-turbo MT model (no load): 650
r100 rpm
2.5 L Non-turbo MT model (A/C ON): 850
r100 rpm
2.5 L Non-turbo AT model (no load): 700
r100 rpm
2.5 L Non-turbo AT model (A/C ON): 850
r100 rpm
2.5 L turbo MT model (no load): 750
r100 rpm
2.5 L turbo MT model (A/C ON): 800
r100 rpm
2.5 L turbo AT model (no load): 750
r100 rpm
2.5 L turbo AT model (A/C ON): 825
r100 rpm
3.0 L model (no load): 650
r50 rpm
3.0 L model (A/C ON): 770
r50 rpm
Triple switch
(Pressure
switch)
Low-pressure switch
operating pressure
ON
o OFF
196
r20 kPa
(2.00
r0.20 kg/cm
2
, 28.4
r2.9 psi)
OFF
o ON
225
+25
–29
kPa
(2.29
+0.25
–0.30
kg/cm
2
, 32.6
+3.6
–4.2
psi)
High-pressure switch
operating pressure
ON
o OFF
3,140
+50
–200
kPa
(32.02
+0.51
–2.04
kg/cm
2
, 455.4
+7.25
–29.0
psi)
OFF
o ON
2,550
r200 kPa
(26.00
r2.04 kg/cm
2
, 369.8
r29.0 psi)
Middle-pressure
switch operating
pressure
ON
o OFF
1,370
r120 kPa
(13.97
r1.22 kg/cm
2
, 198.65
r17.35 psi)
OFF
o ON
1,770
r80 kPa
(18.05
r0.82 kg/cm
2
, 256.81
r11.60 psi)
Thermo-control amplifier working
temperature
(Evaporator outlet air)
(1) ON
(2) OFF
(3) 1°C (33.8°F)
(4) 4
+8.0
0
°C (39.2
+46.4
0
°F)
Item
Specification
AC-01681
(1)
(2)
(3)
(4)
AC-4
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
• Manual A/C model
Item
Specification
Type of air conditioner
Reheat air-mix type
Cooling capacity
5.3 kW (4,557 kcal/h, 18,084 BTU/h)
Refrigerant
HFC-134a (CH
2
FCF
3
)
[0.4
r0.03 kg (0.88r0.07 lb)]
Compressor
Type
Scroll, constant volume (SCSA 08C)
Discharge
74.5 cc (4.55 cu in)/rev
Max. permissible speed
9,000 rpm
Magnet clutch
Type
Dry, single-disc type
Power consumption
35 W
Type of belt
V-belt 4 PK
Pulley dia. (effective dia.)
93 mm (3.7 in)
Pulley ratio
1.43
Condenser
Type
Corrugated fin (Sub cool type)
Core face area
0.193 m
2
(2.077 sq ft)
Core thickness
16 mm (0.63 in)
Radiation area
5.7 m
2
(61.57 sq ft)
Receiver drier
Effective inner capacity
190 cm
3
(11.6 cu in)
Expansion valve
Type
Externally equalizing
Evaporator
Type
Single tank
Dimensions (W × H × T)
298.6 × 151 × 38 mm
(11.7 × 5.94 × 1.50 in)
Blower fan
Fan type
Sirocco fan
Outer diameter × width
150 × 75 mm (5.91 × 2.95 in)
Power consumption
220 W
Condenser fan (Sub fan)
Motor type
Magnet
Power consumption
90 W
Fan outer diameter
300 mm (11.8 in)
Radiator fan (Main fan)
Motor type
Magnet
Power consumption
90 W
Fan outer diameter
300 mm (11.8 in)
Idle speed
MPFI model
2.5 L Non-turbo MT model (no load): 650
r100 rpm
2.5 L Non-turbo MT model (A/C ON): 850
r100 rpm
2.5 L Non-turbo AT model (no load): 700
r100 rpm
2.5 L Non-turbo AT model (A/C ON): 850
r100 rpm
Triple switch
(Pressure
switch)
Low-pressure switch
operating pressure
ON
o OFF
196
r20 kPa
(2.00
r0.20 kg/cm
2
, 28.4
r2.9 psi)
OFF
o ON
225
+25
–29
kPa
(2.29
+0.25
–0.30
kg/cm
2
, 32.6
+3.6
–4.2
psi)
High-pressure switch
operating pressure
ON
o OFF
3,140
+50
–200
kPa
(32.02
+0.51
–2.04
kg/cm
2
, 455.4
+7.25
–29.0
psi)
OFF
o ON
2,550
r200 kPa
(26.00
r2.04 kg/cm
2
, 369.8
r29.0 psi)
Middle-pressure switch
operating pressure
ON
o OFF
1,370
r120 kPa
(13.97
r1.22 kg/cm
2
, 198.65
r17.35 psi)
OFF
o ON
1,770
r80 kPa
(18.05
r0.82 kg/cm
2
, 256.81
r11.60 psi)
AC-5
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Thermo-control amplifier operating
temperature
(Evaporator outlet air)
(1) ON
(2) OFF
(3) 1°C (33.8°F)
(4) 4
+8.0
0
°C (39.2
+46.4
0
°F)
Item
Specification
AC-01681
(1)
(2)
(3)
(4)
AC-6
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
B: COMPONENT
1. HEATER COOLING UNIT
• Auto A/C model
AC-01431
(11)
(12)
(10)
(9)
(8)
(7)
(16)
(17)
(19)
(15)
(14)
(13)
(18)
(22)
(3)
(6)
(1)
(23)
(2)
(5)
(20)
(21)
T
T
(4)
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