Engine Cooling - Evolution: Removal & Installation Mitsubishi Lancer IX

ENGINE COOLANT REPLACEMENT

Required Special Tool

1. MB991871: LLC Changer

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1. Remove the under cover. WARNING: When removing the radiator cap, use care to avoid contact with hot coolant or steam. Place a shop towel over the cap and turn the cap counterclockwise a little to let the pressure escape through the vinyl tube. After relieving the steam pressure, remove the cap by slowly turning it counterclockwise.
2. Drain the water from the radiator, heater core and engine after unplugging the radiator drain plug and removing the radiator cap.
3. Drain the water in the water jacket by unplugging the drain plug of the cylinder block.
4. Remove the reserve tank and drain the coolant.
5. Drain the cooling water then clean the path of the cooling water by injecting water into the radiator from the radiator cap area.
6. Apply the designated sealant to the screw area of the cylinder block drain plug, and then tighten to the standard torque. Specified sealant: 3M™ AAD Part No. 8731 or equivalent Tightening torque: 44 +/- 5 N.m (33 +/- 3 ft-lb)
7. Securely tighten the drain plug of the radiator.
8. Assemble the reserve tank. CAUTION: Do not use alcohol or methanol anti-freeze or any engine coolants mixed with alcohol or methanol anti-freeze. The use of an improper anti-freeze can cause corrosion of the aluminum components.
9. By referring to the section on coolant, select an appropriate concentration for safe operating temperature within the range of 30 to 60%. Use special tool MB991871 to refill the coolant. A convenient mixture is a 50% water and 50% antifreeze solution [freezing point: -31°C (-32.8°F)]. Recommended antifreeze: Mitsubishi Genuine Coolant or equivalent Quantity: 6.0 dm 3 (6.3 quarts) NOTE: For how to use special tool MB991871, refer to its manufacturer's instructions.
10. Reinstall the radiator cap.
11. Start the engine and let it warm up until the thermostat opens.
12. After repeatedly revving the engine up to 3,000 r/min several times, then stop the engine.
13. Remove the radiator cap after the engine has become cold, and pour in coolant up to the brim. Reinstall the cap. CAUTION: Do not overfill the reserve tank.
14. Add coolant to the reserve tank between the "FULL" and "LOW" mark if necessary.
15. Install the under cover.

<< B >> AIR PIPE B MOUNTING BOLT REMOVAL

After removing the bolt, position air pipe B out of the way so that the pipe does not interfere with the radiator assembly or the cooling fan motor, the fan and shroud assembly.

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1. Insert each hose as far as the projection of the water inlet pipe, water outlet fitting or radiator.
2. Align the mating marks on the radiator hose and hose clamp, and then connect the radiator hose.

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>>A<< THERMOSTAT INSTALLATION

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1. Remove sealant from the water outlet fitting and cylinder head surfaces.
2. Apply a bead of the sealant to the cylinder head mating surface of the water outlet fitting as shown. Specified sealant: 3M™ AAD Part No. 8672, 3M™ AAD Part No. 8679/8678 or equivalent NOTE: Install the water outlet fitting within 15 minutes after applying liquid gasket.
3. Install the water outlet fitting to the cylinder head. CAUTION: Then wait at least one hour. Never start the engine or let engine oil or coolant touch the adhesion surface during that time.
4. Tighten the water outlet fitting mounting bolts to the specified torque. Tightening torque: 10 +/- 1 N.m (84 +/- 13 in-lb)

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1. Insert each hose as far as the projection of the water outlet fitting.
2. Align the mating marks on the radiator hose and hose clamp, and then connect the radiator hose.

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1. Immerse the thermostat in water, and heat the water while stirring. Check the thermostat valve opening temperature. Standard value: Valve opening temperature: 80 +/- 1.5°C (176 +/- 3°F)
2. Check that the amount of valve lift is at the standard value when the water is at the full-opening temperature. NOTE: Measure the valve height when the thermostat is fully closed, and use this measurement to compare the valve height when the thermostat is fully open. Standard value: Full-opening temperature: 93°C (199°F) Amount of valve lift: 9.5 mm (0.37 inch) or more

REMOVAL AND INSTALLATION

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>>A<< O-RING INSTALLATION

Fit an O-ring into the O-ring groove located at the end of the water inlet pipe and apply water to the O-ring or the inside of the mounting surface of the water pump for insertion.

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Fit an O-ring into the groove of the water inlet pipe and apply water to the circumference of the O-ring or the inside of the mounting surface of the pipe for insertion.

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>>B<< WATER INLET PIPE INSTALLATION

After installing the water outlet fitting and thermostat case assembly, tighten the mounting bolt of the water inlet pipe to the specified torque.

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1. Insert each hose as far as the projection of the water inlet pipe or water outlet fitting.
2. Align the mating marks on the radiator hose and hose clamp, and then connect the radiator hose.

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1. Remove sealant from the thermostat case and cylinder head surfaces.
2. Apply a bead of the sealant to the cylinder head mating surface of the thermostat case as shown. Specified sealant: 3M™ AAD Part No. 8672, 3M™ AAD Part No. 8679/8678 or equivalent NOTE: Install the water outlet fitting and thermostat case assembly within 75 minutes after applying liquid gasket.
3. Install the water outlet fitting and thermostat case assembly to the cylinder head. CAUTION: Then wait at least one hour. Never start the engine or let engine oil or coolant touch the adhesion surface during that time.
4. Tighten the thermostat case mounting bolts to the specified torque. Tightening torque: 23 +/- 4 N.m (17 +/- 3 ft-lb)