General Description - Subaru Legacy 2003 Service Manual

COOLING

1. General Description

A: SPECIFICATIONS
Cooling system
Total engine coolant capacity
Type
Discharge performance I
Discharge performance II
Water pump
Discharge performance III
Impeller diameter
Number of impeller vanes
Pump pulley diameter
Clearance between impel-
ler and case
"Thrust" runout of impeller end
Type
Starts to open
Thermostat
Fully opened
Valve lift
Valve bore
Motor
Radiator fan
Fan diameter × Blade
Type
Core dimensions
Radiator
Pressure range in which cap valve is open or closed
Fins
Reservoir tank Capacity
GENERAL DESCRIPTION
2 (US qt, Imp qt)
Discharge
Pump speed—pressure leak
Engine coolant temperature
Discharge
Pump speed—pressure leak
Engine coolant temperature
Discharge
Pump speed—pressure leak
Engine coolant temperature
Standard
Limit
With OBD
Without OBD
With OBD
Without OBD
CO(H4SO)-2
Electric fan + Forced engine coolant circula-
tion system
2.0 L MT: Approx. 7.0 (7.4, 6.2)
2.0 L AT: Approx. 6.9 (7.3, 6.1)
2.5 L MT: Approx. 6.8 (7.2, 6.0)
2.5 L AT: Approx. 6.7 (7.1, 5.9)
Centrifugal impeller type
20 2 (5.3 US gal, 4.4 Imp gal)/min.
760 rpm — 0.3 mAq (1.0 ftAq)
85°C (185°F)
100 2 (26.4 US gal, 22.0 Imp gal)/min.
3,000 rpm — 5.0 mAq (16.4 ftAq)
85°C (185°F)
200 2 (52.8 US gal, 44.0 Imp gal)/min.
6,000 rpm — 23.0 mAq (75.5 ftAq)
85°C (185°F)
76 mm (2.99 in)
8
60 mm (2.36 in)
0.5 — 0.7 mm (0.020 — 0.028 in)
1.0 mm (0.039 in)
0.5 mm (0.020 in)
Wax pellet type
80 — 84°C (176 — 183°F)
76 — 80°C (169 — 176°F)
95°C (203°F)
91°C (196°F)
9.0 mm (0.354 in) or more
35 mm (1.38 in)
75 W (main fan)
75 W (sub fan)
300 mm (11.81 in) × 5 (main fan)
300 mm (11.81 in) × 4 (sub fan)
Down flow, pressure type
691.5 × 340 × 16 mm
(27.22 × 13.39 × 0.63 in)
Above: 108±15 kPa
2
(1.1±0.15 kg/cm , 16±2 psi)
Below: −1.0 to −4.9 kPa
(−0.01 to −0.05 kg/cm , −0.1 to −0.7 psi)
2
Corrugated fin type
0.5 2 (0.5 US qt, 0.4 Imp qt)