Mitsubishi Montero (2004+). Manual - part 1149

WATER PUMP

TSB Revision

ENGINE COOLING

14-15

2. Check that the amount of valve lift is at the standard value 

when the water is at the full-opening temperature.
NOTE: Measure the valve height when the thermostat is 
fully closed, and use this measurement to compare the 
valve height when the thermostat is fully open.

Standard value:
Full-opening temperature: 95

°C (203°F)

Amount of valve lift: 10 mm (0.39 inch) or more

WATER PUMP

REMOVAL AND INSTALLATION

M1141002700528

ACX00401AB

VALVE LIFT

Pre-removal and Post-installation Operation
• Engine Coolant Draining and Refilling (Refer to 

P.14-6

.)

• Timing Belt Removal and Installation (Refer to GROUP 

11A, Timing Belt 

P.11A-36

.)

• Camshaft Sprocket Removal and Installation (Refer to 

GROUP 11A, Camshaft and Valve stem seal 

P.11A-18

.)

AC204068

Bolt specifications

Thread diameter × length mm (in)

8 × 25
(0.3 × 1.0)

8 × 22
(0.3 × 0.9)

11

14 ± 1 N·m
120 ± 13 in-lb

12 ± 1 N·m
102 ± 13 in-lb

12 ± 1 N·m
102 ± 13 in-lb

9.0 ± 1.0 N·m
80 ± 9 in-lb

24 ± 3 N·m
18 ± 2 ft-lb

1

5

3

4

2

6

12

13

11

10

7

8

9

N

N

N

N

N

N

AB

14

15

16

17

13 ± 2 N·m
111 ± 22 in-lb

14 ± 1 N·m
120 ± 13 in-lb

WATER PUMP

TSB Revision

ENGINE COOLING

14-16

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
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.

.

REMOVAL STEPS 

1.

ENGINE COOLANT 
TEMPERATURE SENSOR 
CONNECTOR

2.

ENGINE COOLANT 
TEMPERATURE GAUGE UNIT 
CONNECTOR

3.

SPARK PLUG CABLE SUPPORT

<<A>> >>B<<

4.

RADIATOR UPPER HOSE  
CONNECTION

5.

WATER HOSE

6.

WATER HOSE

7.

WATER OUTLET FITTING 
BRACKET

8.

WATER OUTLET FITTING

>>A<<

9.

O-RING

10. GASKET
11. WATER PUMP ASSEMBLY
12. GASKET

>>A<<

13. O-RING
14. FITTING
15. GASKET
16. THERMOSTAT CASE
17. GASKET

REMOVAL STEPS  (Continued)

AC200641AB

MATING MARKS

AC200644 AB

O-RING

WATER PIPE

WATER HOSE AND WATER PIPE

TSB Revision

ENGINE COOLING

14-17

>>B<< 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.

WATER HOSE AND WATER PIPE

REMOVAL AND INSTALLATION

M1141003300288

AC200642

MATING
MARKS

PROJECTION

WATER OUTLET
FITTING

AB

Pre-removal and Post-installation Operation
• Engine Coolant Draining and Supplying (Refer to 

P.14-6

.)

• Intake Manifold Removal and Installation (Refer to 

GROUP 15, Intake Manifold 

P.15-7

.)

• Thermostat Removal and Installation (Refer to 

P.14-13

.)

AC204094

1

2

3

4

5

6

7

8

8

9

10

11

10

12

13

14

15

16

14 ± 1 N·m
120 ± 13 in-lb

14 ± 1 N·m
120 ± 13 in-lb

14 ± 1 N·m
120 ± 13 in-lb

12 ± 1 N·m
102 ± 13 in-lb

9.0 ± 1.0 N·m
80 ± 9 in-lb

19 ± 1 N·m
14 ± 1 ft-lb

AB

N

N

N

N

N

N

REMOVAL STEPS

<<A>> >>D<<

1.

RADIATOR UPPER HOSE 
CONNECTION

2.

WATER HOSE

3.

WATER HOSE

4.

WATER OUTLET FITTING AND 
THERMOSTAT CASE

REMOVAL STEPS (Continued)

WATER HOSE AND WATER PIPE

TSB Revision

ENGINE COOLING

14-18

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<< GASKET INSTALLATION
Bend over the tabs to secure the gasket to the water passage 
assembly.

.

>>B<< WATER HOSE CONNECTION
To reuse the water hose, align the mating marks that were 
made during removal, and then install the hose clamp.

.

5.

GASKET

6.

FITTING

7.

GASKET

8.

WATER HOSE

9.

WATER OUTLET PIPE 
ASSEMBLY

>>C<<

10. O-RING
11. HEATER HOSE CONNECTION
12. WATER PIPE ASSEMBLY

>>C<<

13. O-RING

>>B<<

14. HEATER HOSE CONNECTION
15. WATER PASSAGE ASSEMBLY

>>A<<

16. GASKET

REMOVAL STEPS (Continued)

AC200641AB

MATING MARKS

ACX01830

GASKET

TAB

WATER PASSAGE ASSEMBLY

AB