Engine Cooling System - Cooling (H4SO - 2.5L SOHC): Adjustments Subaru Outback BR

PROCEDURE TO ADJUST THE SUBARU SUPER COOLANT CONCENTRATION

To adjust the concentration of SUBARU Super Coolant according to temperature, find the proper SUBARU Super Coolant concentration in the table, and add diluting water to the SUBARU Super Coolant (concentrated type) until it reaches the proper dilution.

SUBARU SUPER COOLANT CONCENTRATION AND FREEZING TEMPERATURE CHART

Recommended Engine Coolant and Water for Dilution

Refer to "SPECIFICATION" for the recommended engine coolant and diluting water. Ref. to SPECIFICATION , General Description.

Scheme 3

Scheme 4

Scheme 5

Scheme 6

1. Remove the radiator. Ref. to «REMOVAL»(ref-371897-S36238138202010091900000) , Radiator.
2. Remove the V-belts. Ref. to «REMOVAL»(ref-371888-S21452173932010091900000) , V-belt.
3. Remove the crank pulley. Ref. to «REMOVAL»(ref-371888-S03610697542010091900000) , Crank Pulley.
4. Remove the timing belt cover. Ref. to «REMOVAL»(ref-371888-S12311687662010091900000) , Timing Belt Cover.
5. Remove the timing belt. Ref. to «TIMING BELT»(ref-371888-S23905594122010091900000) , REMOVAL, Timing Belt.
6. Remove the automatic belt tension adjuster.
7. Remove the camshaft position sensor. Ref. to «REMOVAL»(ref-371892-S32866347572010091900000) , Camshaft Position Sensor.
8. Remove the cam sprocket LH. Ref. to «REMOVAL»(ref-371888-S35191594932010091900000) , Cam Sprocket.
9. Remove the belt cover No. 2 LH.
10. Remove the tensioner bracket.
11. Disconnect the hose from water pump.
12. Remove the water pump.

Scheme 7

1. Install the water pump onto cylinder block LH. NOTE: Use a new gasket. When installing the water pump, tighten bolts in two stages in alphabetical order as shown in the figure. Tightening torque: 1st 12 N.m (1.2 kgf-m, 8.9 ft-lb) Second 12 N.m (1.2 kgf-m, 8.9 ft-lb)
2. Install the hose to 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. Ref. to «INSTALLATION»(ref-371888-S31393578912010091900000) , Cam Sprocket.
6. Install the camshaft position sensor. Ref. to «INSTALLATION»(ref-371892-S08020499012010091900000) , Camshaft Position Sensor.
7. Install an automatic belt tension adjuster with the tension rod held by a pin. Ref. to «AUTOMATIC BELT TENSION ADJUSTER ASSEMBLY AND BELT IDLER»(ref-371888-S25219792122010091900000) , INSTALLATION, Timing Belt.
8. Install the timing belt. Ref. to «TIMING BELT»(ref-371888-S25574473982010091900000) , INSTALLATION, Timing Belt.
9. Install the timing belt cover. Ref. to «INSTALLATION»(ref-371888-S42441438062010091900000) , Timing Belt Cover.
10. Install the crank pulley. Ref. to «INSTALLATION»(ref-371888-S31279921592010091900000) , Crank Pulley.
11. Install the V-belts. Ref. to «INSTALLATION»(ref-371888-S36391399272010091900000) , V-belt.
12. Install the radiator. Ref. to «INSTALLATION»(ref-371897-S40246255102010091900000) , Radiator.

Scheme 8

1. Check the water pump bearing for smooth rotation.
2. Check the water pump pulley for abnormalities.
3. Make sure the impeller is not abnormally deformed or damaged.
4. Inspect the clearance between impeller and pump case. Clearance between impeller and pump case: Standard 0.5 - 1.5 mm (0.020 - 0.060 in)
5. After water pump installation, check pulley shaft for engine coolant leaks or noise. If leaks or noise are noted, replace the water pump assembly.

Scheme 9

Scheme 10

1. Lift up the vehicle.
2. Remove the under cover. Ref. to «REMOVAL»(ref-371913-S09538241932010091900000) , Front Under Cover.
3. Drain engine coolant. Ref. to «DRAINING OF ENGINE COOLANT»(ref-371897-S32353678122010091900000) , REPLACEMENT, Engine Coolant.
4. Disconnect the radiator outlet hose from thermostat cover.
5. Remove the thermostat cover, and then remove the gasket and thermostat.

Scheme 11

1. Install a gasket to thermostat. NOTE: Use a new gasket.
2. Install the thermostat and thermostat cover. NOTE: Install the parts with the jiggle pin facing upside. Tightening torque: 12 N.m (1.2 kgf-m, 8.9 ft-lb)
3. Connect the radiator outlet hose to thermostat cover.
4. Install the under cover. Ref. to «INSTALLATION»(ref-371913-S15712020302010091900000) , Front Under Cover.
5. Lower the vehicle.
6. Fill engine coolant. Ref. to «FILLING OF ENGINE COOLANT»(ref-371897-S13253157322010091900000) , REPLACEMENT, Engine Coolant.

Scheme 12

1. Check that the thermostat does not have deformation, cracks or damage.
2. Check that the thermostat valve closes completely at an ambient temperature.
3. Immerse the thermostat and a thermometer in water. Raise water temperature gradually, and check the temperature and valve lift when the valve begins to open and when the valve is fully opened. Replace the thermostat if faulty. NOTE: During the test, agitate the water for even temperature distribution. Leave the thermostat in the boiling water for five minutes or more before measuring the valve lift. Hold the thermostat with a wire or the like to avoid contacting the container bottom. Starting temperature to open: 86 - 90°C (187 - 194°F) Full open temperature: 95°C (203°F) Total valve lift: 9.0 mm (0.354 in) or more