Removing
− Before starting to remove parts, carry out the following operations:
- A) (MPI engine) Remove the engine crankcase guard.
- b) Drain the coolant.
- V) (GDI engine) Remove the decorative engine cover.
- G) Remove the air filter.
- d) (MPI engine) Remove the thermostat.
- e) (Engine 4G93-GDI) Remove the exhaust manifold.
- and) (GDI engine) Remove the EGR valve actuator.
− Removal of parts is carried out in the order of numbers indicated in the figure "Removal of hoses and tubes of the cooling system".
Removal of hoses and tubes of the cooling system (4G15-MPI engine). 1 - coolant temperature sensor connector; 2 - connector for the sensor of the coolant temperature indicator; 3 - connection of the upper radiator hose; 4 - hose of the cooling system; 5 - thermostat housing assembly; 6 - thermostat housing gasket; 7 - ring gasket; 8 - retainer of the wiring harness of the engine control system; 9 - hose of the cooling system; 10 - heater hose connection; 11 - inlet pipe of the cooling system; 12 - annular gasket.
Removal of hoses and tubes of the cooling system (engine 4G93-MPI). 1 - coolant temperature sensor connector; 2 - knock sensor connector; 3 - camshaft position sensor connector; 4 - connector for the sensor of the coolant temperature indicator; 5 - hose of the cooling system; 6 - hose of the cooling system; 7 - heater hose connection; 8 - thermostat housing assembly; 9 - knock sensor connector connection; 10 - inlet pipe of the cooling system; 11 - ring gasket; 12 - connection of the upper radiator hose; 13 - outlet pipe of the cooling system.
Removal of hoses and tubes of the cooling system (engine 4G15-GDI). 1 - connection of the upper radiator hose; 2 - connection of the lower radiator hose; 3 - coolant temperature sensor connector; 4 - heater hose connection; 5 - connector for the sensor of the coolant temperature indicator; 6 - hose of the cooling system; 7 - thermostat housing assembly; 8 - inlet pipe of the cooling system; 9 - outlet pipe of the cooling system; 10 - heater hose connection; 11 - intake manifold rack; 12 - hose of the cooling system; 13 - inlet pipe of the cooling system; 14 - ring gasket; 15 - cooling system hose.
Removal of hoses and tubes of the cooling system (engine 4G93-GDI). 1 - connection of the upper radiator hose; 2 - inlet pipe of the cooling system; 3 - connection of the lower radiator hose; 4 - thermostat housing assembly and outlet pipe of the cooling system; 5 - ring gasket; 6 - hose of the cooling system; 7 - heater hose connection; 8 - knock sensor connector; 9 - inlet pipe of the cooling system; 10 - ring gasket; 11 - cooling system hose.
− When removing parts, pay attention to the following operations:
1. Removing the upper and lower radiator hoses.
Before disconnecting the upper and lower radiator hoses, mark the relative position on the hose and hose clamp.
Attention: after disconnecting the hoses from the radiator, it is necessary to close the holes in the hose and radiator with plugs to prevent dust or foreign particles from entering them.
2. (Engine 4G15-GDI) Removing the supply pipe of the cooling system.
A) Loosen the intake manifold resonator bolts.
b) Move the intake manifold resonator and remove the coolant supply pipe.
Examination
1. Check hoses and tubes for cracks, damage or blockage before installation. Replace if necessary.
2. The procedure for checking the coolant temperature sensor is given in the chapter "fuel injection system".
3. The procedure for checking the sensor of the coolant temperature gauge is given in the chapter "Body electrical equipment".
Installation
− Installation of parts is carried out in the reverse order of removal.
− When installing parts, pay attention to the following operations:
1. Installation of the ring gasket of the inlet pipe of the cooling system.
Install the O-ring on the cooling system inlet pipe and apply a little coolant or water to its outer surface, and then install the pipe. The application of coolant or water will simplify the operation of installing the cooling system pipe.
Attention:
− Keep engine oil and grease away from the O-ring surface.
- Keep the connection points of the cooling system inlet pipe free of sand, dust, etc.
2. Installation of thermostat housing assembly, cooling system outlet pipe (engine 4G15-GDI and 4G93-MPI).
A) Using a scraper or a wire brush, completely clean the bonded surfaces from the remnants of the old sealant. After cleaning, degrease surfaces to be sealed.
b) Apply sealant evenly in a continuous bead approximately 3 mm in diameter to the mating surface of the thermostat housing to the cylinder head, cooling system outlet (engine 4G15-GDI and 4G93-MPI).
Mitsubishi Genuine Parts No. MD970389, Three Bond 1207F i or equivalent
Caution: Do not apply more sealant than necessary.
V) Install thermostat housing assembly, cooling system outlet pipe (engine 4G15-GDI and 4G93-MPI) until sealant dries (within 15 minutes after applying the sealant). It is not allowed to apply sealant to places other than those indicated above.
3. Connecting the upper and lower radiator hoses.
A) When connecting the radiator hoses, put the hose on the branch pipe until it stops against the protrusion of the branch pipe, then tighten the clamp.
b) The hose clamp should always be installed in the position in which the clamp was previously installed. Therefore, before installing the clamp, align the alignment marks on the hose clamp and hose, then connect the hose.
− After completing the installation of the parts, perform the following operations.
- A) (GDI engine) Install the EGR valve actuator.
- b) (Engine 4G93-GDI) Install the exhaust manifold.
- V) (MPI engine) Install thermostat.
- G) Install the air filter.
- d) (GDI engine) Install the decorative engine cover.
- e) Fill in the coolant
- and) (MPI engine) Install the engine crankcase guard.