Engine Cooling: Removal & Installation Mitsubishi Montero III

ENGINE COOLANT REPLACEMENT

1. Check the cooling system parts such as the radiator, heater and oil cooler hoses, thermostat and the connections for leakage and damage.
2. Set the temperature control knob to the "HOT" position. CAUTION 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.
3. Remove the radiator cap, radiator drain plug and engine drain plug to drain the coolant. Remove the reserve tank and drain the coolant.
4. After completely draining the coolant, reinstall the drain plugs and flush the engine and radiator using a radiator cleaning fluid.
5. After the flushing is completed, completely drain the cleaning fluid and install the radiator and engine drain plugs. Loosen the air bleed bolt.
6. Select an appropriate concentration for safe operating temperature within the range of 30 to 60%. Refill the system with a high quality ethylene glycol antifreeze at the selected concentration. A convenient mixture is a 50% water and 50% antifreeze solution [freezing point: -31 °C (-32.8°F)].
7. Pour in coolant until it overflows from the air bleed bolt hole, and then tighten the air bleed bolt. Engine coolant total capacity (including coolant reserve tank): 9.0 cm 3 (9.5 quarts). Reinstall the radiator cap.
8. Start the engine and let it warm up until the thermostat opens. After repeatedly revving the engine up to 3,000 r/min several times, then stop the engine.
9. 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.

<< A >> RADIATOR SHROUD UPPER COVER/RADIATOR SHROUD LOWER COVER REMOVAL

Tilt the fixing lever at the shroud housing cover outward slightly, and remove the cover toward the fan axis from its four fixing points.

<< B >> A/T OIL COOLER HOSE REMOVAL

After removing the hose from the radiator, plug the hose and the radiator nipple to prevent dust or foreign particles from getting in.

<< A >> DRIVE BELT REMOVAL

The following operations will be needed due to the introduction of the serpentine drive system with the drive belt auto tensioner.

Scheme 7

1. Insert a 12.7mm (1/2inch) breaker bar into the square hole on the drive belt auto tensioner, and rotate it clockwise until the tensioner touches the stopper.
2. Align hole B with hole A, and insert a 5.0 mm (0.20 inch) Allen wrench to hold the tensioner. Then loosen the drive belt, and then remove the drive belt auto tensioner.

Scheme 8

Scheme 9

1. Install the drive belt auto tensioner with the Allen wrench inserted.
2. After the drive belt has been installed, remove the Allen wrench while holding the drive belt auto tensioner with a socket wrench drive. Then release the drive belt auto tensioner slowly.
3. Check for proper tension.

Scheme 10

1. Install the covers securely until the click can be heard from the four fixing points.
2. Two lugs around the circumference of the covers should be seen on the outside of the shroud.
3. After installation, check that the covers are fixed securely.

>> A << O-RING INSTALLATION

Fit the O rings into the groove of the water pipe ends, and apply water to the circumference of the O ring and the pipe bores to insert the pipe assembly.

Scheme 11

Scheme 12

>> A << GASKET INSTALLATION

Bend over the tabs to secure the gasket to the water passage assembly.

Scheme 13

>> C << O-RING INSTALLATION

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

Scheme 14

Scheme 15

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.