Subaru Legacy (2005 year). Service manual — part 85
CO(H4SO 2.0)-15
COOLING
Water Pump
4. Water Pump
A: REMOVAL
1) Remove the radiator. <Ref. to CO(H4SO 2.0)-
20, REMOVAL, Radiator.>
2) Remove the V-belt. <Ref. to ME(H4SO 2.0)-37,
REMOVAL, V-belt.>
3) Remove the timing belt. <Ref. to ME(H4SO 2.0)-
43, TIMING BELT, REMOVAL, Timing Belt.>
4) Remove the automatic belt tension adjuster.
5) Remove the belt idler No. 2.
6) Remove the cam sprocket (LH) using ST.
ST
18231AA010
CAM SPROCKET WRENCH
NOTE:
CAM SPROCKET WRENCH (499207100) can
also be used.
7) Remove the belt cover No. 2 (LH).
8) Remove the tensioner bracket.
9) Disconnect the hose from water pump.
10) Remove the water pump.
B: INSTALLATION
1) Install the water pump onto cylinder block (LH).
NOTE:
• Use a new gasket.
• When installing the water pump, tighten the bolts
in two stages in alphabetical sequence as shown in
figure.
CO-00016
CO-00017
CO-00018
S T
CO-00019
CO-00020
CO-00021
CO(H4SO 2.0)-16
COOLING
Water Pump
Tightening torque:
First
12 N
⋅
m (1.2 kgf-m, 8.9 ft-lb)
Second
12 N
⋅
m (1.2 kgf-m, 8.9 ft-lb)
2) Connect the hose to the water pump.
3) Install the tensioner bracket.
Tightening torque:
24.5 N
⋅
m(2.5 kgf-m, 18.1 ft-lb)
4) Install the belt cover No. 2 (LH).
Tightening torque:
5 N
⋅
m (0.5 kgf-m, 3.7 ft-lb)
5) Install the cam sprocket (LH) using ST.
ST
18231AA010
CAM SPROCKET WRENCH
NOTE:
CAM SPROCKET WRENCH (499207100) can
also be used.
Tightening torque:
78 N
⋅
m (8.0 kgf-m, 57.9 ft-lb)
6) Install the belt idler No. 2.
Tightening torque:
39 N
⋅
m (4.0 kgf-m, 28.9 ft-lb)
7) Install the automatic belt tension adjuster which
tension rod is held with pin. <Ref. to ME(H4SO
2.0)-44, AUTOMATIC BELT TENSION ADJUST-
ER ASSEMBLY AND BELT IDLER, INSTALLA-
TION, Timing Belt.>
8) Install the timing belt. <Ref. to ME(H4SO 2.0)-
45, TIMING BELT, INSTALLATION, Timing Belt.>
9) Install the V-belts. <Ref. to ME(H4SO 2.0)-37,
INSTALLATION, V-belt.>
10) Install the radiator. <Ref. to CO(H4SO 2.0)-21,
INSTALLATION, Radiator.>
C: INSPECTION
1) Check the water pump bearing for smooth rota-
tion.
2) Check the water pump pulley for abnormalities.
3) Make sure the impeller is not deformed or dam-
aged.
4) Inspect the clearance between impeller and
pump case.
ME-02463
(F)
(E)
(D)
(C)
(B)
(A)
CO-00020
CO-00019
CO-00018
S T
CO-00017
CO(H4SO 2.0)-17
COOLING
Water Pump
Clearance between impeller and pump case:
Specification
0.5
—
1.5 mm (0.020
—
0.059 in)
5) After water pump installation, check the pulley
shaft for engine coolant leaks and noise. If leaks or
noise are noted, replace the water pump assembly.
CO-00293
CO(H4SO 2.0)-18
COOLING
Thermostat
5. Thermostat
A: REMOVAL
1) Set the vehicle on a lift.
2) Lift-up the vehicle.
3) Remove the under cover.
4) Drain engine coolant completely. <Ref. to
CO(H4SO 2.0)-13, DRAINING OF ENGINE
COOLANT, REPLACEMENT, Engine Coolant.>
5) Disconnect the radiator outlet hose from thermo-
stat cover.
6) Remove the thermostat cover and gasket, and
then remove the thermostat.
B: INSTALLATION
1) Install a gasket to thermostat, and install the
thermostat and gasket to water pump as a unit.
Then, install the thermostat cover.
NOTE:
• When reinstalling the thermostat, use a new gas-
ket.
• The thermostat must be installed with the jiggle
pin facing to the up side.
(A) Drain plug
(B) Heat shield cover
CO-00268
(A)
(B)
CO-00270
(A) Thermostat cover
(B) Gasket
(C) Thermostat
CO-00154
(A)
(C)
(B)
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