Subaru Legacy (2005 year). Service manual — part 81
EX(H4SO 2.0)-11
EXHAUST
Rear Exhaust Pipe
• RH side (2.5 L model)
4) Install the rear exhaust pipe to center exhaust
pipe.
NOTE:
Use a new gasket.
Tightening torque:
18 N
⋅
m (1.8 kgf-m, 13.0 ft-lb)
C: INSPECTION
1) Check the connections and welds for exhaust
leaks.
2) Check for hole or rust.
3) Check the cushion rubber for wear or crack.
EX-00218
EX-00214
EX(H4SO 2.0)-12
EXHAUST
Muffler
5. Muffler
A: REMOVAL
1) Separate the muffler from rear exhaust pipe.
• LH side
• RH side (2.5 L model)
2) Apply a coat of spray type lubricant to the mating
area of cushion rubber.
• LH side
• RH side (2.5 L model)
3) Remove the front and rear cushion rubber, and
then remove the muffler.
B: INSTALLATION
Install in the reverse order of removal.
NOTE:
Use a new gasket and self-locking nut.
Tightening torque:
48 N
⋅
m (4.9 kgf-m, 35.4 ft-lb)
• LH side
• RH side (2.5 L model)
C: INSPECTION
1) Check the connections and welds for exhaust
leaks.
2) Check for hole or rust.
3) Check the cushion rubber for wear or crack.
EX-00222
EX-00218
EX-00220
EX-00221
EX-00222
EX-00218
COOLING
CO(H4SO 2.0)
Page
General Description . . . . . . . . . . . . . . . . . . . . . 2
Radiator Fan System . . . . . . . . . . . . . . . . . . . . ..7
Engine Coolant. . . . . . . . . . . . . . . . . . . . . . ..13
Water Pump . . . . . . . . . . . . . . . . . . . . . . . ..15
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . 18
Radiator. . . . . . . . . . . . . . . . . . . . . . . . . .20
Radiator Cap . . . . . . . . . . . . . . . . . . . . . . . .24
Radiator Main Fan and Fan Motor . . . . . . . . . . . . . . . 25
Radiator Sub Fan and Fan Motor. . . . . . . . . . . . . . . ..27
Reservoir Tank. . . . . . . . . . . . . . . . . . . . . . ..29
Engine Cooling System Trouble in General . . . . . . . . . . . ..30
CO(H4SO 2.0)-2
COOLING
General Description
1. General Description
A: SPECIFICATION
Cooling system
Electric fan + Forced engine coolant circulation
system
Total engine
coolant
capacity
LHD
MT
2 (US qt, Imp qt)
6.4 (6.8, 5.6)
AT
Model without ATF
warmer
2 (US qt, Imp qt)
6.3 (6.7, 5.5)
Model with ATF
warmer
2 (US qt, Imp qt)
6.7 (7.0, 5.9)
RHD
MT
2 (US qt, Imp qt)
6.5 (6.9, 5.7)
AT
Model without ATF
warmer
2 (US qt, Imp qt)
6.4 (6.8, 5.6)
Model with ATF
warmer
2 (US qt, Imp qt)
6.8 (7.2, 6.0)
Water pump
Type
Centrifugal impeller type
Discharge perfor-
mance 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 perfor-
mance 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 perfor-
mance 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
80 — 84
°C (176 — 183°F)
Fully opens
95
°C (203°F)
Valve lift
mm (in)
9.0 (0.354) or more
Valve bore
mm (in)
35 (1.38)
Radiator fan
Motor input
Main fan
90 W
Sub fan
90 W
Fan diameter /
Blades
Main fan
300 mm (11.81 in) / 4
Sub fan
300 mm (11.81 in) / 5
Radiator
Type
Down flow, pressure type
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
kPa (kgf/cm
2
, psi)
Above: 108
±15 or more
(1.1
±0.15, 16±2)
Below:
−1.0 — −4.9 or less
(
−0.01 — −0.05, −0.1 — −0.7)
Fins
Corrugated fin type
Reservoir
tank
Capacity
2 (US qt, Imp qt)
0.45 (0.48, 0.40)
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