Mitsubishi Outlander (2003+). Manual - part 128

WATER PUMP

ENGINE COOLING

14-23

WATER PUMP

REMOVAL AND INSTALLATION <4G36>

M1141002700551

INSTALLATION SERVICE POINT

>>A<< O-RING INSTALLATION

Fit the O-ring to the groove in the water inlet pipe. 
Then lubricate the O-ring and the inside of the water 
pump with water, and then insert the pipe to the 
water pump.

Pre-removal Operation

•

Engine Coolant Draining (Refer to 

P.14-17

).

•

Timing Belt Removal (Refer to GROUP 11A, Timing Belt 

P.11A-39

).

Post-installation Operation

•

Timing Belt Installation (Refer to GROUP 11A, Timing Belt 

P.11A-39

).

•

Engine Coolant Refilling (Refer to 

P.14-17

).

AC301467

22 ± 4 N·m

23 ± 3 N·m

14 ± 1 N·m

1

2

3

4

N

N

Bolt specifications

Screw diameter × length mm

8 × 70

8 × 22

8 × 14

8 × 22

8 × 25

2

AB

Removal steps

1.

Alternator brace

2.

Water pump

3.

Water pump gasket

>>A<<

4.

O-ring

AC103005

Water pump

O-ring

Water inlet pipe

AD

WATER PUMP

ENGINE COOLING

14-24

REMOVAL AND INSTALLATION <4G69>

M1141002700540

INSTALLATION SERVICE POINT

>>A<< O-RING INSTALLATION

Fit the O-ring to the groove in the water inlet pipe. 
Then lubricate the O-ring and the inside of the water 
pump with water, and then insert the pipe to the 
water pump.

Pre-removal Operation

•

Engine Coolant Draining (Refer to 

P.14-17

).

•

Timing Belt Removal (Refer to GROUP 11C, Timing Belt 

P.11C-36

).

Post-installation Operation

•

Timing Belt Installation (Refer to GROUP 11C, Timing Belt 

P.11C-36

).

•

Engine Coolant Refilling (Refer to 

P.14-17

).

AC309459

1

2

3

N

N

14 ± 1 N·m

Bolt specifications

Screw diameter × length mm

8 × 55

8 × 22

8 × 14

8 × 22

8 × 55

1

AB

Removal steps

1.

Water pump

2.

Water pump gasket

>>A<<

3.

O-ring

AC103005

Water pump

O-ring

Water inlet pipe

AD

WATER HOSE AND WATER PIPE

ENGINE COOLING

14-25

WATER HOSE AND WATER PIPE

REMOVAL AND INSTALLATION <4G63>

M1141003300556

Pre-removal and Post-installation Operation

•

Engine Coolant Draining and Supplying (Refer to 

P.14-17

).

•

Air Cleaner Removal and Installation (Refer to GROUP 

15, Air Cleaner 

P.15-3

).

•

Thermostat Removal and Installation (Refer to 

P.14-20

).

AC301428

1

2

3

4

5

6

7

8

9

9

13 ± 2 N·m

23 ± 4 N·m

13 ± 2 N·m

N

N

AB

2

Sealant: Mitsubishi Genuine Part No. MD970839 or equivalent

Ø3 mm

Ø3 mm

5

Removal steps

<<A>>

>>C<<

1.

Radiator upper hose connection

>>B<<

2.

Water outlet fitting

3.

Water hose

4.

Water hose

>>B<<

5.

Thermostat case assembly

6.

Heater hose connection

7.

Transfer water return hose 
connection <4WD>

8.

Water inlet pipe assembly

>>A<<

9.

O-ring

Removal steps (Continued)

WATER HOSE AND WATER PIPE

ENGINE COOLING

14-26

REMOVAL SERVICE POINT

<<A>> RADIATOR UPPER HOSE 
DISCONNECTION

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

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<< THERMOSTAT CASE ASSEMBLY/WATER 
OUTLET FITTING INSTALLATION
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 specified sealant.

Specified Sealant: MITSUBISHI GENUINE 
PART No.MD970389 or equivalent

3. With the sealant still wet (within 15 minutes after 

the sealant is applied), install the thermostat case 
or water outlet fitting. Do not apply the sealant in 
an area more than the required.

>>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.

AC200641AC

Mating marks

AC200644 AC

O-ring

Water inlet pipe

Water pump or thermostat case

AC200642

Mating marks

Projection

Water inlet pipe,
water outlet fitting
or radiator

AC