Mitsubishi Montero (2002-2004). Manual — part 1074

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-5

ON-VEHICLE SERVICE

ENGINE COOLANT LEAK CHECK

M1141001000247

WARNING

When pressure testing the cooling system, slowly
release cooling system pressure to avoid getting
burned by hot coolant.

CAUTION

• Be sure to completely clean away any moisture from

the places checked.

• When the tester is taken out, be careful not to spill any

coolant.

• Be careful when installing and removing the tester and

when testing not to deform the filler neck of the radia-
tor.

1. Check that the coolant level is up to the filler neck. Install a

radiator tester and apply 160 kPa (23 psi) pressure, and
then check for leakage from the radiator hose or
connections.

2. If there is leakage, repair or replace the appropriate part.

RADIATOR CAP PRESSURE CHECK

M1141001300293

NOTE: Be sure that the cap is clean before testing. Rust or
other foreign material on the cap seal will cause an improper
reading.
1. Use a cap adapter to attach the cap to the tester.
2. Increase the pressure until the indicator of the gauge stops

moving.

Minimum limit: 83 kPa (12 psi)
Standard value: 93

− 123 kPa (14 − 18 psi)

3. Replace the radiator cap if the reading does not remain at or

above the limit.

ENGINE COOLANT REPLACEMENT

M1141001200326

Changing Coolant

1. Set the temperature control knob to the "HOT" position.

ACX01844 AB

CAP ADAPTER

ADAPTER

ACX01845 AB

CAP ADAPTER

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-6

WARNING

When removing the radiator cap, use care to avoid
contact with hot coolant or steam. Place a shop towel
over the cap and turn the cap counterclockwise a lit-
tle to let the pressure escape through the vinyl tube.
After relieving the steam pressure, remove the cap by
slowly turning it counterclockwise.

2. Remove the radiator cap, radiator drain plug and engine

drain plug to drain the coolant.

3. Remove the reserve tank and drain the coolant.
4. Drain the cooling water then clean the path of the cooling

water by injecting water into the radiator from the radiator
cap area.

5. Apply the designated sealant to the screw area of the

cylinder block drain plug, and then tighten to the standard
torque.

Specified sealant: 3M

ä Nut Locking Part number 4171

or equivalent
Tightening torque: 39

± 5 N⋅m (29 ± 3 ft-lb)

6. Securely tighten the drain plug of the radiator.
7. Assemble the reservoir tank.

CAUTION

Do not use alcohol or methanol anti-freeze or any engine
coolants mixed with alcohol or methanol anti-freeze. The
use of an improper anti-freeze can cause the corrosion of
the aluminum components.
8. <Refilling engine coolant without the special tool>

(1) Loosen the air bleed bolt.
(2) By referring to the section on coolant, select an

appropriate concentration for safe operating temperature
within the range of 30 to 60%. Refill the system with a
high quality ethylene glycol antifreeze at the selected
concentration. A convenient mixture is a 50% water and
50% antifreeze solution [freezing point:

−31°C (−32.8°F)].

Pour in coolant until it overflows from the air bleed bolt
hole, and then tighten the air bleed bolt.

9. <When special tool MB991871 is used>

By referring to the section on coolant, select an appropriate
concentration for safe operating temperature within the
range of 30 to 60%. Use special tool MB991871 to refill the
coolant. A convenient mixture is a 50% water and 50%
antifreeze solution [freezing point:

−31°C (−32.8 °F)].

NOTE: For how to use special tool MB991871, refer to its
manufacturer’s instructions.

Recommended antifreeze:
Long life antifreeze coolant or an equivalent

Quantity: 9.0 dm

3

(9.5 quarts)

AC200625AB

CYLINDER BLOCK
DRAIN PLUG

AC203797

AB

CAUTION LABEL

AIR BLEED BOLT

14±1 N·m
120±13 in-lb

AC204032

AB

AIR HOSE

MB991871

ON-VEHICLE SERVICE

TSB Revision

ENGINE COOLING

14-7

10.Reinstall the radiator cap.
11.Start the engine and let it warm up until the thermostat

opens.

12.After repeatedly revving the engine up to 3,000 r/min

several times, then stop the engine.

13.Remove the radiator cap after the engine has become cold,

and pour in coolant up to the brim. Reinstall the cap.

CAUTION

Do not overfill the reserve tank.
14.Add coolant to the reserve tank between the "FULL" and

"LOW" mark if necessary.

ENGINE COOLANT CONCENTRATION TEST

M1141001100277

Refer to GROUP 00, RECOMMENDED LUBRICANTS AND
LUBRICANT CAPACITIES TABLE

P.00-31

.

DRIVE BELT TENSION CHECK AND
ADJUSTMENT

M1141004500100

Refer to GROUP 00, Maintenance Service

P.00-39

.

RADIATOR

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ENGINE COOLING

14-8

RADIATOR

RADIATOR REMOVAL AND INSTALLATION

M1141001500316

Pre-removal Operation
• Engine Coolant Draining (Refer to

P.14-5

.)

• Air Intake Duct Removal (Refer to GROUP 15

P.15-6

.)

Post-installation Operation
• Engine Coolant Refilling and Level Check (Refer to

P.14-

5

.)

• A/T Fluid Refilling and Level Check (Refer to GROUP 00,

Maintenance Service

P.00-42

.)

• Air Intake Duct Installation (Refer to GROUP 15

P.15-6

.)

ACX00403AB

5.0 ± 1.0 N·m
44 ± 9 in-lb

12 ± 2 N·m
101 ± 23 in-lb

7

9

4

8

10

3

11

5

6

1

2

REMOVAL STEPS

<<A>> >>B<<

1.

RADIATOR SHROUD UPPER
COVER

<<A>> >>B<<

2.

RADIATOR SHROUD LOWER
COVER

<<B>>

3.

A/T OIL COOLER HOSE
CONNECTION

<<C>> >>A<<

4.

RADIATOR UPPER HOSE

<<C>> >>A<<

5.

RADIATOR LOWER HOSE

6.

SHROUD

7.

OVERFLOW HOSE

8.

CONDENSER TANK

9.

UPPER INSULATOR

10. RADIATOR
11. LOWER INSULATOR

REMOVAL STEPS (Continued)