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Engine Cooling: Removal & Installation Mitsubishi Outlander I

Cooling System (Mechanical) 16 illustrations ~678 words

ENGINE COOLANT REPLACEMENT

Required Special Tool

  1. MB991871: LLC Changer
WARNINGWhen 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.

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Scheme 37
Scheme 37

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Scheme 38

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Scheme 39
  1. Drain the water from the radiator, heater core and engine after unplugging the radiator drain plug and removing the radiator cap.
  2. Drain the water in the water jacket by unplugging the drain plug of the cylinder block.
  3. Remove the reserve tank and drain the coolant.
  4. Drain the cooling water then clean the path of the cooling water by injecting water into the radiator from the radiator cap area.
  5. Apply the designated sealant to the screw area of the cylinder block drain plug, and then tighten to the standard torque. Specified sealant: 3M(tm) AAD Part No.8731 or equivalent Tightening torque: 44 +/- 5 N.m (33 +/- 3 ft-lb)
  6. Securely tighten the drain plug of the radiator.
  7. Assemble the reservoir 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.
  8. 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: Long Life Antifreeze Coolant or equivalent Quantity: 7.0 dm 3 (7.4 quarts) NOTE: For how to use special tool MB991871, refer to its manufacturer's instructions.
  9. Reinstall the radiator cap.
  10. Start the engine and let it warm up until the thermostat opens.
  11. After repeatedly revving the engine up to 3,000 r/min several times, then stop the engine.
  12. 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.
  13. Add coolant to the reserve tank between the "FULL" and "LOW" mark if necessary.

>>A<< THERMOSTAT INSTALLATION

CAUTIONMake absolutely sure that no oil adheres to the rubber ring of the thermostat. Also do not fold or scratch the rubber ring during installation.

Install the thermostat so that the jiggle valve is facing straight up. Be careful not to fold or scratch the rubber ring.

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Scheme 40

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Scheme 41: >>B<< RADIATOR LOWER HOSE CONNECTION
Scheme 41: >>B<< RADIATOR LOWER HOSE CONNECTION
  1. Insert each hose as far as the projection of the water inlet fitting.
  2. Align the mating marks on the radiator hose and hose clamp, and then connect the radiator hose.

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Scheme 42: Thermostat Check
Scheme 42: Thermostat Check

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Scheme 43
  1. Immerse the thermostat in water, and heat the water while stirring. Check the thermostat valve opening temperature. Standard value: Valve opening temperature: 82 +/- 1.5°C (180 +/- 3°F)
  2. Check that the amount of valve lift is at the standard value when the water is at the full-opening temperature. Standard value: Full-opening temperature: 95°C (203°F) Amount of valve lift: 8.5 mm (0.33 inch) 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.

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Scheme 44: REMOVAL AND INSTALLATION
Scheme 44: REMOVAL AND INSTALLATION

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Scheme 45: >>A<< O-RING INSTALLATION
Scheme 45: >>A<< O-RING INSTALLATION
  1. Fit the O-ring to the O-ring groove at the tip of the water inlet pipe.
  2. Wet the O-ring or the inner part of the water pump assembling area with water or coolant, then insert the water inlet pipe.

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Scheme 46: >>B<< WATER PUMP INSTALLATION
Scheme 46: >>B<< WATER PUMP INSTALLATION

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Scheme 47
Scheme 47

Scheme 48

Scheme 48: REMOVAL AND INSTALLATION
Scheme 48: REMOVAL AND INSTALLATION

>>A<< O-RING INSTALLATION

CAUTIONDo not allow engine oil or other grease to adhere to the O-ring

Insert the O-ring to the water pipe, and coat the outer portion of the O-ring with water or engine coolant.

Scheme 49

Scheme 49
Scheme 49

Scheme 50

Scheme 50: >>B<< THERMOSTAT HOUSING ASSEMBLY/WATER OUTLET FITTING INSTALLATION
Scheme 50: >>B<< THERMOSTAT HOUSING ASSEMBLY/WATER OUTLET FITTING INSTALLATION

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Scheme 51
Scheme 51
  1. Use a gasket scraper or wire brush to completely eliminate all gasket material on the gasket mounting surface.
  2. Apply a bead of the sealant to the cylinder head mating surface of the thermostat housing as shown. Specified Sealant: 3M(tm) AAD Part No.8672, 3M(tm) AAD Part No.8679/8678 or equivalent
  3. Apply sealant to the thread of the thermostat housing assembly bolts as shown. Specified Sealant: 3M(tm) AAD Part No.4170 or equivalent
  4. With the sealant still wet (within 15 minutes after the sealant is applied), install the thermostat housing. Do not apply the sealant in an area more than the required.

Scheme 52

Scheme 52: >>C<< RADIATOR UPPER HOSE CONNECTION
Scheme 52: >>C<< RADIATOR UPPER HOSE CONNECTION
  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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