Mitsubishi 380. Manual - part 239

WATER HOSE AND WATER PIPE

ENGINE COOLING

14-40

WATER HOSE AND WATER PIPE

REMOVAL AND INSTALLATION

M1141003300493

REMOVAL SERVICE POINT

.

<<A>> RADIATOR UPPER HOSE DISCONNEC-
TION

After making mating marks on the radiator hose and hose 
clamp, disconnect the radiator hose.

Pre-removal and Post-installation Operation
Thermostat Removal and Installation (Refer to 35).

04DB020A

N

1

9

7

5

6

2

8

19 ± 1 N·m

14 ± 1 ft-lb

19 ± 1 N·m

14 ± 1 ft-lb

N

9

N

N

6

11 ± 1 N·m

98 ± 8 in-lb

2

29 ± 10 N·m

22 ± 7 ft-lb

REMOVAL STEPS

<<A>>

>>C<<

1.

RADIATOR UPPER HOSE 
CONNECTION

2.

HEATER HOSE CONNECTION

5.

THERMOSTAT HOUSING

6.

GASKET

>>B<<

7.

ENGINE COOLANT 
TEMPERATURE SENSOR

8.

WATER PUMP INLET PIPE

>>A<<

9.

O-RING

REMOVAL STEPS (Continued)

AC200641AB

MATING MARKS

WATER HOSE AND WATER PIPE

ENGINE COOLING

14-41

INSTALLATION SERVICE POINTS

.

>>A<< O-RING INSTALLATION

CAUTION

Do 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.

.

>>B<< ENGINE COOLANT TEMPERATURE 
SENSOR INSTALLATION

Apply the specified sealant to the thread of the engine coolant 
temperature sensor, and then tighten it to the specified torque.

Specified Sealant: 3M

™ AAD Part No. 8731 or equiva-

lent

.

>>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.

INSPECTION

M1141003400337

.

Water Pipe and Hose Check

Check the water pipe and hose for cracks, damage and clogs. 
Replace them if necessary.

AC200644 AB

O-RING

WATER PIPE

AC208408AB

AC200642

MATING
MARKS

PROJECTION

WATER OUTLET
FITTING

AB

SPECIFICATIONS

ENGINE COOLING

14-42

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

M1141005000346

ITEM

SPECIFICATION

Cylinder block drain plug 

39 

± 5 N⋅m (29 ± 3 ft-lb)

Radiator

Front end structure bar bolt

M8 

× 10

11 

± 2 N⋅m (98 ± 17 in-lb)

M8 

× 20

22 

± 4 N⋅m (16 ± 3 ft-lb)

Thermostat 

Control harness bolt

5.0 

± 1.0 N⋅m (44 ± 9 in-lb)

Grounding bolt

M6

9.0 

± 2.0 N⋅m (80 ± 17 in-lb)

M8

22 

± 4 N⋅m (16 ± 3 ft-lb)

Water inlet fitting bolt 

19 

± 1 N⋅m (14 ± 1 ft-lb)

Water hose and water pipe 

Engine coolant temperature sensor

29 

± 10 N⋅m 

Thermostat housing bolt

19 

± 1 N⋅m (14 ± 1 ft-lb)

Water pump inlet pipe

11 

± 1 N⋅m (98 ± 8 ft-lb)

Water pump 

Water pump bolt

M8

42 

± 8 N⋅m (31 ± 6 ft-lb)

M10

24 

± 3 N⋅m (18 ± 2 ft-lb)

Water pump bracket bolt

24 

± 3 N⋅m (18 ± 2 ft-lb)

SPECIFICATIONS

ENGINE COOLING

14-43

SERVICE SPECIFICATION

M1141000300449

CAPACITIES

M1141005100138

SEALANTS

M1141000500368

ITEM

STANDARD VALUE LIMIT

Fan Controller V

A/C OFF

1 or less

-

A/C ON

Repeat
8.2 

± 2.6

System voltage 

± 2.6

-

High-pressure valve opening pressure of radiator cap kPa (psi)

93 

− 123 (14 − 18)

Minimum 83 (12)

Thermostat

Valve opening temperature 
of thermostat 

°C (°F)

3.8L Engine

88 

± 1.5 (190 ± 3)

-

Full-opening temperature 
of thermostat 

°C (°F)

3.8L Engine

100 (212)

-

Valve lift mm (in)

3.8L Engine

9.0 (0.35) or more

-

ITEM

QUANTITY dm

3

 (qt)

Long life antifreeze coolant or an equivalent

3.8L Engine

8.7 (9.2)

ITEM

SPECIFIED SEALANT

Cylinder block drain plug

3M

™ AAD Part No.8731 or equivalent

Engine coolant temperature sensor