Subaru Legacy III (2000-2003 year). Service manual — part 276
CO(H6DO)-2
COOLING
GENERAL DESCRIPTION
1. General Description
A: SPECIFICATIONS
Cooling system
Electric fan + Forced engine coolant circula-
tion system
Total engine coolant capacity
2
(US qt, Imp qt)
Approx. 7.9 (8.4, 7.0)
Water pump
Type
Centrifugal impeller type
Discharge performance
Discharge
320 L (84.5 US gal, 70.4 Imp gal)/min.
Pump speed—total engine
coolant head
5,500 rpm — 18 mAq (59 ft Aq)
Engine coolant temperature
80
°
C (176
°
F)
Impeller diameter
73.2 mm (2.882 in)
Number of impeller vanes
6
Tooth number of pump sprocket
22 t
Thermostat
Type
Wax pellet type
Start to open
80 — 84
°
C (176 — 183
°
F)
Fully open
95
°
C (203
°
F)
Valve lift
9.0 mm (0.354 in) or more
Valve bore
35 mm (1.38 in)
Radiator fan
Motor
120 W (main fan)
120 W (sub fan)
Fan diameter
×
Blade
320 mm (12.60 in)
×
5 (main fan)
320 mm (12.60 in)
×
7 (sub fan)
Radiator
Type
Down flow, pressure type
Core dimensions
699
×
349
×
27 mm
(27.52
×
13.74
×
1.06 in)
Pressure range in which cap valve is open
Above: 108
±
15 kPa
(1.1
±
0.15 kg/cm
2
, 16
±
2 psi)
Below:
−
1.0 to
−
4.9 kPa
(
−
0.01 to
−
0.05 kg/cm
2
,
−
0.1 to
−
0.7 psi)
Fins
Corrugated fin type
Reservoir
tank
Capacity
0.5 L (0.5 US qt, 0.4 Imp qt)
CO(H6DO)-3
COOLING
GENERAL DESCRIPTION
B: COMPONENT
1. WATER PUMP
(1) Water pump ASSY
(4) Gasket
Tightening torque: N·m (kgf-m, ft-lb)
(2) O-ring
(5) Thermostat cover
T: 6.4 (0.65, 4.7)
(3) Thermostat
CO-00106
( 1 )
( 2 )
( 3 )
( 4 )
( 5 )
T
T
CO(H6DO)-4
COOLING
GENERAL DESCRIPTION
2. RADIATOR AND RADIATOR FAN
(1) Radiator lower bracket
(12) Radiator sub fan
(23) ATF outlet hose A
(2) Radiator lower cushion
(13) Radiator sub fan motor
(24) ATF pipe
(3) Drain cock
(14) Sub fan shroud
(25) ATF inlet hose B
(4) Radiator
(15) Radiator main fan
(26) ATF outlet hose B
(5) Radiator upper bracket
(16) Radiator main fan motor
(6) Radiator upper cushion
(17) Main fan shroud
Tightening torque: N·m (kgf-m, ft-lb)
(7) Clamp
(18) Engine coolant reservoir tank cap
T1: 4.4 (0.45, 3.3)
(8) Radiator inlet hose A
(19) Over flow hose
T2: 4.9 (0.50, 3.6)
(9) Clamp
(20) Engine coolant reservoir tank
T3: 7.5 (0.76, 5.5)
(10) Radiator inlet hose B
(21) ATF hose clamp
T4: 12 (1.2, 8.7)
(11) Radiator outlet hose
(22) ATF inlet hose A
( 1 )
( 2 )
( 3 )
( 4 )
( 5 )
( 6 )
( 7 )
( 7 )
( 7 )
( 7 )
T4
T1
T3
T1
T2
T2
T3
T4
T2
T4
T4
( 8 )
( 9 )
( 9 )
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(23)
(22)
(21)
(21)
(21)
(21)
(24)
(21)
(21)
(21)
(26)
(25)
CO-00107
CO(H6DO)-5
COOLING
GENERAL DESCRIPTION
C: CAUTION
• Wear working clothing, including a cap, protec-
tive goggles, and protective shoes during opera-
tion.
• Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
• Keep the disassembled parts in order and pro-
tect them from dust or dirt.
• Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly, and replacement.
• Be careful not to burn your hands, because each
part in the vehicle is hot after running.
• Be sure to tighten fasteners including bolts and
nuts to the specified torque.
• Place shop jacks or safety stands at the specified
points.
• Before disconnecting electrical connectors of
sensors or units, be sure to disconnect ground ca-
ble from battery.
D: PREPARATION TOOL
1. SPECIAL TOOLS
2. GENERAL PURPOSE TOOLS
ILLUSTRATION
TOOL NUMBER
DESCRIPTION
REMARKS
499977100
CRANK PULLEY
WRENCH
Used for stopping crankshaft pulley when loosen-
ing and tightening crankshaft pulley bolts.
18231AA000
CAMSHAFT
SPROCKET
WRENCH
Used for removing and installing camshaft
sprocket.
TOOL NAME
REMARKS
Radiator cap tester
Used for measuring pressure.
ST-499977100
ST18231AA000
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