Mitsubishi Engine cooling Instruction manual

14-1
ENGINE
COOLING
CONTENTS 14109000208
GENERAL INFORMATION 2..................
SERVICE SPECIFICATIONS 2.................
LUBRICANT 2...............................
SEALANTS 2................................
SPECIAL TOOL 3............................
TROUBLESHOOTING 3.......................
ON-VEHICLE SERVICE 9.....................
Engine Coolant Leak Checking 9................
Radiator Cap Opening Pressure
Check 9.......................................
Engine Coolant Replacement 10.................
Concentration Measurement 11..................
Fan Controller Check 12........................
Fan Control Relay Continuity Check 12..........
THERMOSTAT 13...........................
WATER PUMP
<4G6> 15................................
<6A1> 16................................
<4D6> 18................................
WATER HOSE AND WATER PIPE 19........
RADIATOR 24...............................

ENGINE COOLING - General Information/
Service Specifications/Lubricant/Sealants
14-2
GENERAL INFORMATION 14100010217
The cooling system is designed to keep every part
of the engine at appropriate temperature in
whatever condition the engine may be operated.
Thecoolingmethodisofthewater-cooled,pressure
forced circulation type in which the water pump
pressurizes coolant and circulates it throughout the
engine. If the coolant temperature exceeds the
prescribed temperature, the thermostat opens to
circulate the coolant through the radiator as well
so that the heat absorbed by the coolant may be
radiated into the air.
The water pump is of the centrifugal type and is
driven by the timing belt or drive belt from the
crankshaft.
The radiator is the corrugated fin, down flow type
and is cooled by the electrical radiator fan.
The cooling fans are controlled by a fan controller
and the engine-ECU depending on driving
conditions.
Items Specifications
Radiator Performance kJ/h 4G6 175,800
6A1 200,900
4D6 213,500
A/T oil cooler Performance kJ/h 4G6 5,700
6A1, 4D6 7,100
SERVICE SPECIFICATIONS 14100030091
Items Standard value Limit
Radiator cap opening pressure kPa 74 - 103 64
Range of coolant antifreeze concentration of radiator % 30 - 60 -
Thermostat Valve opening temperature of thermostat _C82 ±1.5 -
Full-opening temperature of thermostat _C95 -
Valve lift (at 95_C) mm 8.5 or more -
LUBRICANT 14100040148
Items Quantity L
HIGH QUALITY ETHYLENE GLYCOL 4G6, 6A1 6
ANTIFREEZE COOLANT 4D6 8
SEALANTS 14100050172
Items Specified sealant Remarks
Cylinder block drain plug 3M Nut Locking Part No. 4171 or equivalent Drying sealant
Water pump <6A1>,
Thermostat case assembly <4G6, 4D6>,
Water outlet fitting <4D6>
Mitsubishi Genuine Parts No. MD970389 or
equivalent Semi-drying sealant

ENGINE COOLING - Special Tool/Troubleshooting 14-3
SPECIAL TOOL 14100060038
Tool Number Name Use
A
B
C
D
MB991223
A: MB991219
B: MB991220
C: MB991221
D: MB991222
Harness set
A: Test harness
B: LED harness
C: LED harness
adapter
D: probe
Measurement of terminal voltage
A: Connector pin contact pressure inspection
B: Power circuit inspection
C: Power circuit inspection
D: Commercial tester connection
TROUBLESHOOTING 14100560019
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptoms Inspection procedure
No.
Reference page
Radiator fan and condenser fan do not operate. <Vehicles with A/C>
Radiator fan does not operate. <Vehicles without A/C>
114-3
Radiator fan and condenser fan do not change speed or stop.
<Vehicles with A/C>
Radiator fan does not change speed or stop. <Vehicles without A/C>
214-6
Radiator fan does not operate. <Vehicles with A/C> 314-8
Condenser fan does not operate. <Vehicles with A/C> 414-8
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure 1
Radiator fan and condenser fan do not operate.
<Vehicles with A/C>
Radiator fan does not operate. <Vehicles without A/C>
Probable cause
The cause could be a malfunction of the fan controller power supply or earth circuit.
The cause could also be a malfunction of the fan controller or the engine-ECU.
DMalfunction of fusible link
DMalfunction of fan control relay
DMalfunction of fan controller
DMalfunction of engine-ECU
DMalfunction of wiring harness or connector

ENGINE COOLING - Troubleshooting
14-4
<Vehicles with A/C>
OK
1. NG Check the harness wire between fan control relay and fusible link
(4), and repair if necessary.
2. NG Check the harness wire between fan control relay and fusible link
(7), and repair if necessary.
3. NG Check the harness wire between fan control relay and body earth,
and repair if necessary.
OK NG
Repair
OK NG
Replace
Check the automatic compressor-ECU <manual air conditioner>
or A/C-ECU <automatic air conditioner>, and repair if necessary.
(Refer to GROUP 55 - Troubleshooting.)
YES NO
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
Replace the radiator fan motor and fan controller assembly.
NOTE
*1: 4G6
*2: 6A1
*3: 4D6
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DPull out the terminal No.21 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor and condenser fan motor operate.
<4D6>
DPull out the terminal No.18 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor and condenser fan motor operate.
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DVoltage between 21 and body earth
(Engine: idling, A/C switch: ON)
OK: 0.7 V or more (When A/C compressor is operating)
<4D6>
DVoltage between 18 and body earth
(Engine: idling, A/C switch: ON)
OK: 0.7 V or more (When A/C compressor is operating)
NG Check the harness wire between fan controller and engine-ECU.
OK
1. NG Check the harness wire between fan controller and fan control
relay, and repair if necessary.
2. NG Check the harness wire between fan controller and body earth,
and repair if necessary.
Measure at the fan controller connector A-22.
DDisconnect the connector, and measure at the harness side
connector.
1. Voltage between 3 and body earth (Ignition switch: ON)
OK: Battery voltage
2. Continuity between 1 and body earth
OK: Continuity
Measure at the fan control relay connector B-20X.
DRemove the relay, and measure at the harness side connector.
1. Voltage between 4 and body earth
OK: Battery voltage
2. Voltage between 3 and body earth (Ignition switch: ON)
OK: Battery voltage
3. Continuity between 1 and body earth
OK: Continuity
DFusible links (4) and (7) check
DFan control relay check (Refer to P.14-12.)
NG Replace

ENGINE COOLING - Troubleshooting 14-5
<Vehicles without A/C>
OK
1. NG Check the harness wire between fan control relay and fusible link
(4), and repair if necessary.
2. NG Check the harness wire between fan control relay and fusible link
(7), and repair if necessary.
3. NG Check the harness wire between fan control relay and body earth,
and repair if necessary.
OK
1. NG Check the harness wire between fan controller and fan control
relay, and repair if necessary.
2. NG Check the harness wire between fan controller and body earth,
and repair if necessary.
OK NG
Repair
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
YES NO
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
Replace the radiator fan motor and fan controller assembly.
NOTE
*1: 4G6
*2: 6A1
*3: 4D6
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DPull out the terminal No.21 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor operates.
<4D6>
DPull out the terminal No.18 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor operates.
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DVoltage between 21 and body earth (Engine: idling)
OK: 0.7 V or more (When radiator fan is operating)
<4D6>
DVoltage between 18 and body earth (Engine: idling)
OK: 0.7 V or more (When radiator fan is operating)
NG Check the harness wire between fan controller and engine-ECU.
Measure at the fan controller connector A-22.
DDisconnect the connector, and measure at the harness side
connector.
1. Voltage between 3 and body earth (Ignition switch: ON)
OK: Battery voltage
2. Continuity between 1 and body earth
OK: Continuity
Measure at the fan control relay connector B-20X.
DRemove the relay, and measure at the harness side connector.
1. Voltage between 4 and body earth
OK: Battery voltage
2. Voltage between 3 and body earth (Ignition switch: ON)
OK: Battery voltage
3. Continuity between 1 and body earth
OK: Continuity
DFusible links (4) and (7) check
DFan control relay check (Refer to P.14-12.)
NG Replace

ENGINE COOLING - Troubleshooting
14-6
Inspection Procedure 2
Radiator fan and condenser fan do not change speed or
stop. <Vehicles with A/C>
Radiator fan does not change speed or stop.
<Vehicles without A/C>
Probable cause
The fan controller carries out step-free control of the radiator fan motor and the condenser
fan motor speeds using signals transmitted from the engine-ECU.
DMalfunction of fan control relay
DMalfunction of fan controller
DMalfunction of engine-ECU
DMalfunction of wiring harness or connector
<Vehicles with A/C>
OK
NG
Repair
OK
NG
Replace
Check the automatic compressor-ECU <manual air conditioner>
or A/C-ECU <automatic air conditioner>, and repair if necessary.
(Refer to GROUP 55 - Troubleshooting.)
YES NO
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
Replace the radiator fan motor and fan controller assembly.
NOTE
*1: 4G6
*2: 6A1
*3: 4D6
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DPull out the terminal No.21 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor and condenser fan motor operate.
DConnect the terminal No.21 to the body earth (Ignition switch: ON)
OK: The radiator fan motor and condenser fan motor stop.
<4D6>
DPull out the terminal No.18 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor and condenser fan motor operate.
DConnect the terminal No.18 to the body earth (Ignition switch: ON)
OK: The radiator fan motor and condenser fan motor stop.
OK
Fan controller check (Refer to P.14-12.)
NG Replace the radiator fan motor and fan controller assembly.
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DVoltage between 21 and body earth
(Engine: idling, engine coolant temperature: 80_C or less)
OK: 0 - 0.3 V (Engine: idling, A/C switch: ON)
OK: 0.7 V or more (When A/C compressor is operating)
<4D6>
DVoltage between 18 and body earth
(Engine: idling, engine coolant temperature: 80_C or less)
OK: 0 - 0.3 V (Engine: idling, A/C switch: ON)
OK: 0.7 V or more (When A/C compressor is operating)
NG Check the harness wire between fan controller and engine-ECU.
OK
DCheck the harness wire between fan control relay and fusible
link (7).
DCheck the harness wire between fan control relay and body
earth.
DCheck the harness wire between fan control relay and fan
controller.
NG Repair
Fan control relay check (Refer to P.14-12.) NG Replace

ENGINE COOLING - Troubleshooting 14-7
<Vehicles without A/C>
OK NG
Repair
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
YES NO
Engine-ECU terminal voltage check (Refer to GROUP 13A - Trou-
bleshooting.)
Replace the radiator fan motor and fan controller assembly.
NOTE
*1: 4G6
*2: 6A1
*3: 4D6
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DPull out the terminal No.21 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor operates.
DConnect the terminal No.21 to the body earth (Ignition switch: ON)
OK: The radiator fan motor stops.
<4D6>
DPull out the terminal No.18 to disconnect it (Ignition switch: ON)
OK: The radiator fan motor operates.
DConnect the terminal No.18 to the body earth (Ignition switch: ON)
OK: The radiator fan motor stops.
OK
Fan controller check (Refer to P.14-12.) NG Replace the radiator fan motor and fan controller assembly.
OK
Measure at the engine-ECU connectors C-34*1, C-33*2, C-53*3.
DConnect the connector.
<Except 4D6>
DVoltage between 21 and body earth
(Engine: idling, engine coolant temperature: 80_C or less)
OK: 0 - 0.3 V (Engine: idling)
OK: 0.7 V or more (When radiator fan is operating)
<4D6>
DVoltage between 18 and body earth
(Engine: idling, engine coolant temperature: 80_C or less)
OK: 0 - 0.3 V (Engine: idling)
OK: 0.7 V or more (When radiator fan is operating)
NG Check the harness wire between fan controller and engine-ECU.
OK
DCheck the harness wire between fan control relay and fusible
link (7).
DCheck the harness wire between fan control relay and body
earth.
DCheck the harness wire between fan control relay and fan
controller.
NG Repair
Fan control relay check (Refer to P.14-12.) NG Replace

ENGINE COOLING - Troubleshooting
14-8
Inspection Procedure 3
Radiator fan does not operate. <Vehicles with A/C> Probable cause
The cause could be a malfunction of the radiator fan motor or an open circuit between
the fan controller and the radiator fan motor.
DMalfunction of radiator fan motor
DOpen circuit between fan controller and radiator fan
motor
Replace the radiator fan motor and fan controller assembly.
Inspection Procedure 4
Condenser fan does not operate. <Vehicles with A/C> Probable cause
The cause could be a malfunction of the condenser fan motor or of the fan controller. DMalfunction of condenser fan motor
DMalfunction of fan controller
DMalfunction of wiring harness or connector
OK
Replace the radiator fan motor and fan
controller assembly.
OK
Check the trouble symptom. NG Replace the condenser fan motor.
Condenser fan motor check (Refer to
GROUP 55.)
NG Condenser fan motor connector NG Repair

ENGINE COOLING - On-vehicle Service 14-9
ON-VEHICLE SERVICE 14100100136
ENGINE COOLANT LEAK CHECKING
1. Confirm that the coolant level is up to the filler neck.
Install a radiator cap tester and apply 160 kPa pressure,
and then check for leakage from the radiator hose or
connections.
Caution
(1) Be sure to completely clean away any moisture
from the places checked.
(2) When the tester is taken out, be careful not to
spill any coolant from it.
(3) Becareful,wheninstallingandremovingthetester
and when testing, not to deform the filler neck
of the radiator.
2. If there is leakage, repair or replace the appropriate part.
RADIATOR CAP OPENING PRESSURE CHECK
14100130159
1. Use a cap adapter to attach the cap to the tester.
2. Increase the pressure until the indicator of the gauge
stops moving.
Limit: 64 kPa
Standard value: 74 - 103 kPa
3. Replace the radiator cap if the reading does not remain
at or above the limit.
NOTE
Be sure that the cap is clean before testing, since rust
or other foreign material on the cap seal will cause an
improper indication.
Cap adapter
Adapter
Cap adapter

ENGINE COOLING - On-vehicle Service
14-10
ENGINE COOLANT REPLACEMENT 14100120231
1. Drain the engine coolant by removing the drain plug and
then the radiator cap.
2. Remove the drain plug from the cylinder block to drain
the engine coolant.
Cylinder block drain plug
<4G6> <4D6>
<6A1> Front bank
<6A1> Rear bank
3. Remove the reserve tank to drain the engine coolant.
4. When the engine coolant has drained, pour in water from
the radiator cap to clean the engine coolant line.
5. Coat the thread of the cylinder block drain plug with the
specified sealant and tighten to the specified torque.
Specified sealant:
3M Nut Locking Part No. 4171 or equivalent
6. Securely tighten the radiator drain plug.
7. Install the reserve tank.
39 Nm
<6A1> <4G6, 4D6>
44 Nm

ENGINE COOLING - On-vehicle Service 14-11
8. Remove the air bleed bolt and replace the seal washer.
9. Fill the radiator until the engine coolant flows from the
air bleed bolt section, and then close the air bleed bolt.
10. Slowly pour the engine coolant into the mouth of the
radiator until the radiator is full, and pour also into the
reserve tank up to the FULL line.
Recommended antifreeze:
HIGH QUALITY ETHYLENE GLYCOL ANTIFREEZE
COOLANT
Quantity:
<4G6, 6A1> 6 L
<4D6> 8 L
NOTE
For Norway, the non-amine type of antifreeze should be
used.
11. Install the radiator cap securely.
12. Start the engine and warm the engine until the thermostat
opens. (Touch the radiator hose with your hand to check
that warm water is flowing.)
13. After the thermostat opens, race the engine several times,
and then stop the engine.
14. Cool down the engine, and then pour engine coolant
into the reserve tank until the level reaches the FULL
line. If the level is low, repeat the operation from step
11.
CONCENTRATION MEASUREMENT 14100110146
Measure the temperature and specific gravity of the engine
coolant to check the antifreeze concentration.
Standard value: 30 - 60 % (allowable concentrationrange)
RECOMMENDED ANTIFREEZE
Antifreeze Allowable concentration
HIGH QUALITY ETHYLENE
GLYCOL ANTIFREEZE COOLANT
30 - 60 %
Caution
If the concentration of the antifreeze is below 30 %, the
anti-corrosion property will be adversely affected. In
addition, if the concentration is above 60 %, both the
anti-freezing and engine cooling properties will decrease,
affecting the engine adversely. For these reasons, be
sure to maintain the concentration level within the
specified range.
Water outlet
fitting
Air bleed bolt
12-15 Nm
Seal washer
<6A1>

ENGINE COOLING - On-vehicle Service
14-12
FAN CONTROLLER CHECK 14100610011
1. Remove the fan controller mounting bolt, and then
disconnect the condenser fan motor connector.
2. Start the engine and run it at idle.
3. Turn the A/C switch to ON and maintain the coolant
temperature at 80_C or less.
4. When measuring the voltage between the fan
controller-side connector terminals, check that the value
changes repeatedly as indicated by (1) - (3) below.
(1) 0 V
(2) <4G6> 8.2 ±2.6 V
<Except 4G6> 6.8 ±2.6 V
(3) Battery voltage ±2.6 V
5. If the voltage does not repeatedly change as indicated,
replace the radiator fan motor and the fan controller
assembly.
FAN CONTROL RELAY CONTINUITY CHECK
14100620014
Battery voltage Terminal No.
1 2 3 4
When current is not
supplied
When current is
supplied
Fan controller
- +
Fan control relay

ENGINE COOLING - Thermostat 14-13
THERMOSTAT 14100240265
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
DEngine Coolant Draining and Supplying
(Refer to P.14-10.)
DAir Cleaner and Air Intake Hose Assembly Removal
and Installation
DAir Hose and Air Pipe Assembly Removal and
Installation <4D6> (Refer to P.14-21.)
17 - 20 Nm
<4G6>
<6A1>
<4D6>
13 Nm
12 - 15 Nm
12 - 15 Nm
13 Nm
1
2
3
4
5
6
7
4
4
7
6
3
3
6
7
Removal steps
1. Heater hose connection <4D6>
2. Water hose connection <4D6>
AA""
BA3. Radiator lower hose connection
4. Control wiring harness mounting
bolt
5. Fuel pipe mounting bolt <4D6>
6. Water inlet fitting
"AA7. Thermostat

ENGINE COOLING - Thermostat
14-14
REMOVAL SERVICE POINT
AA"RADIATOR LOWER HOSE DISCONNECTION
After making mating marks on the radiator hose and the hose
clamp, disconnect the radiator hose.
INSTALLATION SERVICE POINTS
"AATHERMOSTAT INSTALLATION
Install the thermostat so that the jiggle valve is facing straight
up.
Caution
Make absolutely sure that no oil is adhering to the rubber
ring of the thermostat. In addition, be careful not to fold
over or scratch the rubber ring when inserting. If the
rubber ring is damaged, replace the thermostat.
"BARADIATOR 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.
INSPECTION 14100250275
THERMOSTAT CHECK
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
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
Amount of valve lift: 8.5 mm or more
NOTE
Measure the valve height when the thermostat is fully
closed, and use this measurement to calculate the valve
height when the thermostat is fully open.
Jiggle valve
Rubber ring
Valve lift

ENGINE COOLING - Water Pump <4G6> 14-15
WATER PUMP <4G6> 14100270363
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
DEngine Coolant Draining and Supplying
(Refer to P.14-10.)
DTiming Belt Tensioner Pulley Removal and
Installation (Refer to GROUP 11.)
12 - 15 Nm
24 Nm
8´60 8 ´22
8´14
20 - 25 Nm
Bolt specifications
8´25
8´22
Screw diameter ´length mm
1
2
4
32
Removal steps
1. Alternator brace
2. Water pump
3. Water pump gasket
"AA4. O-ring
INSTALLATION SERVICE POINT
"AAO-RING INSTALLATION
Insert the O-ring to the water inlet pipe assembly, and coat
the outer circumference of the O-ring with water or engine
coolant.
Caution
Do not allow engine oil or other greases to adhere to
the O-ring
Water pump
O-ring
Water inlet pipe assembly

ENGINE COOLING - Water Pump <6A1>
14-16
WATER PUMP <6A1> 14100270370
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
DEngine Coolant Draining and Supplying
(Refer to P.14-10.)
DPower Steering Fluid Draining and Supplying
(Refer to GROUP 37A - On-vehicle Service.)
DRadiator Removal and Installation (Refer to P.14-24.)
DA/C Compressor Removal and Installation
(Refer to GROUP 55.)
DTiming Belt Removal and Installation
(Refer to GROUP 11.)
DEngine Mount Bracket Removal and Installation (Refer
to GROUP 32.)
24 Nm
8´30
8´25
Bolt specifications
8´25
Screw diameter ´length mm
49 Nm
12 Nm
18 Nm
39 Nm
39 Nm
Sealant:
Mitsubishi Genuine Part No.
MD970389 or equivalent
8´20
8´30
8´25
8´30
12
3
4
5
5
5
f3mm
Removal steps
1. Pressure tube connection
AA"2. Power steering oil pump assembly
3. Power steering oil pump bracket
4. Engine support bracket
"AA5. Water pump

ENGINE COOLING - Water Pump <6A1> 14-17
REMOVAL SERVICE POINT
AA"POWER STEERING OIL PUMP ASSEMBLY
REMOVAL
Remove the power steering oil pump assembly with the hoses
still attached.
NOTE
Secure the removed oil pump with rope, etc. in a place where
it will not be in the way when removing and installing the
power steering oil pump bracket.
INSTALLATION SERVICE POINT
"AAWATER PUMP INSTALLATION
Squeeze out the sealant from the tube evenly and apply
it so that there is not too much sealant and no places without
sealant.
Specified Sealant:
Mitsubishi Genuine Part No. MD970389 or equivalent

ENGINE COOLING - Water Pump <4D6>
14-18
WATER PUMP <4D6> 14100270387
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
DEngine Coolant Draining and Supplying
(Refer to P.14-10.)
DTiming Belt Idler Pulley Removal and Installation
(Refer to GROUP 11.)
12 - 15 Nm
24 Nm
8´20
8´22
Bolt specifications
8´65
8´22
Screw diameter ´length mm
1
2
4
3
8´25
24 Nm
Removal steps
1. Alternator brace
2. Water pump
3. Water pump gasket
"AA4. O-ring
INSTALLATION SERVICE POINT
"AAO-RING INSTALLATION
Insert the O-ring to the water inlet pipe assembly, and coat
the outer circumference of the O-ring with water or engine
coolant.
Caution
Do not allow engine oil or other greases to adhere to
the O-ring
Water pump
O-ring
Water inlet pipe assembly

ENGINE COOLING - Water Hose and Water Pipe 14-19
WATER HOSE AND WATER PIPE 14100330306
REMOVAL AND INSTALLATION
<4G6>
Pre-removal and Post-installation Operation
DEngine Coolant Draining and Suppling
(Refer to P.14-10.)
DAir Cleaner and Air Intake Hose Assembly Removal
and Installation
24 Nm
12
7
8
13 Nm
6
1
5
2
11
3
4
10
9
13 Nm
7
Sealant:
Mitsubishi Genuine Part No.
MD970389 or equivalent
f3mm
Removal steps
AA""
CA1. Radiator lower hose connection
2. Control wiring harness mounting
bolt
3. Water inlet fitting
4. Engine coolant temperature gauge
unit connector
5. Water hose
6. Heater hose connection
"BA7. Thermostat case assembly
"AA8. O-ring
9. Heater hose connection
10. Water hose
11. Water inlet pipe assembly
"AA12. O-ring

ENGINE COOLING - Water Hose and Water Pipe
14-20
<6A1>
Pre-removal and Post-installation Operation
DEngine Coolant Draining and Supplying
(Refer to P.14-10.)
DAir Cleaner and Air Intake Hose Assembly Removal
and Installation
DDistributor Removal and Installation
(Refer to GROUP 16.)
10 - 12 Nm
22 - 25 Nm
27 - 33 Nm
22 Nm
39 Nm
12 - 15 Nm
22 - 25 Nm
12 - 15 Nm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Removal steps
1. Control wiring harness mounting
bolt
2. Spark plug cable clamp mounting
bolt
AA""
CA3. Radiator upper hose connection
AA""
CA4. Radiator lower hose connection
5. Engine coolant temperature sensor
connector
6. Engine coolant temperature gauge
unit connector
7. Water hose
8. Water hose
9. Heater hose connection
10. Heater pipe assembly
"AA11. O-ring
12. Water hose
13. Thermostat case assembly
"AA14. O-ring
15. Water inlet pipe assembly
"AA16. O-ring
17. Water hose
18. Water pipe assembly
19. Water pipe joint