Subaru 2006 Legacy, Manual

Page: 1503 / 4302

CO(H4DOTC)-2
General Description
COOLING
1. General Description
A: SPECIFICATION
Cooling system
Electric fan + Forced engine coolant
circulation system
Total engine coolant capacity
2
(US qt, Imp qt)
MT: Approx. 7.3 (7.7, 6.4)
AT: Approx. 7.2 (7.6, 6.3)
Water pump
Type Centrifugal impeller type
Discharge
performance I
Discharge rate
2
(US gal, Imp gal) /min 20 (5.3, 4.4)
Pump speed — Discharge pressure 760 rpm — 2.9 kPa (0.3 mAq)
Engine coolant temperature 80°C (176°F)
Discharge
performance II
Discharge rate
2
(US gal, Imp gal) /min 100 (26.4, 22.0)
Pump speed — Discharge pressure 3,000 rpm — 49.0 kPa (5.0 mAq)
Engine coolant temperature 80°C (176°F)
Discharge
performance III
Discharge rate
2
(US gal, Imp gal) /min 200 (52.8, 44.0)
Pump speed — Discharge pressure 6,000 rpm — 225.4 kPa (23.0 mAq)
Engine coolant temperature 80°C (176°F)
Impeller diameter mm (in) 76 (2.99)
Number of impeller vanes 8
Pump pulley diameter mm (in) 60 (2.36)
Clearance between
impeller and case
Standard mm (in) 0.5 — 1.5 (0.020 — 0.059)
Thermostat
Type Wax pellet type
Starting temperature to open 76 — 80°C (169 — 176°F)
Fully opens 91°C (196°F)
Valve lift mm (in) 9.0 (0.354) or more
Valve bore mm (in) 35 (1.38)
Radiator fan
Motor input
Main fan
W
120
Sub fan
W
120
Fan diameter /
Blade
Main fan 320 mm (12.6 in)/5
Sub fan 320 mm (12.6 in)/7
Radiator
Type Down flow
Core dimensions
Width × Height ×
Thickness
mm (in) 687.4 × 340 × 16 (27.06 × 13.39 × 0.63)
Pressure range in
which cap valve is
open
Coolant filler tank
side
kPa (kg/cm
2
, psi)
Above: 108
±
15
(1.1
±
0.15, 16
±
2)
Below: –1.0 — –4.9
(–0.01 — –0.05, –0.1 — –0.7)
Radiator side
kPa (kg/cm
2
, psi)
Above only: 137
±
14.7
(1.40
±
0.15, 20
±
2.1)
Fins Corrugated fin type
Reservoir tank Capacity
2
(US qt, Imp qt) 0.45 (0.48, 0.40)
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