Mitsubishi Grandis. Manual — part 812
THERMOSTAT
ENGINE COOLING
14-21
INSTALLATION SERVICE POINTS
>>A<< THERMOSTAT INSTALLATION
CAUTION
Make absolutely sure that no oil adheres to the
rubber ring of the thermostat. Also do not fold or
scratch the rubber ring during installation.
Install the thermostat so that the jiggle valve is facing
straight up. Be careful not to fold or scratch the
rubber ring.
>>B<< HOSE CLIPS/RADIATOR LOWER
HOSE CONNECTION
CAUTION
Never reuse the hose clip whose claw is broken
off to prevent the rusting.
1. Insert a new hose clip into the radiator upper
hose.
2. Insert the radiator upper hose until the protrusion
of the water outlet fitting.
3. Remove the hose clip claw and shorten the hose
clip, then install the radiator upper hose.
INSPECTION
M1141002500502
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.
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
Amount of valve lift: 8.5 mm or more
AC000279
Jiggle valve
Rubber ring
AB
ACX00400AB
ACX00401AC
Valve lift
WATER PUMP
ENGINE COOLING
14-22
WATER PUMP
REMOVAL AND INSTALLATION
M1141002700603
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
• Timing Belt Removal (Refer to GROUP 11A, Timing Belt
Post-installation Operation
• Timing Belt Installation (Refer to GROUP 11A, Timing Belt
• Engine Coolant Refilling (Refer to
AC302091
AC302090
AC302105
8 × 55
8 × 22
8 × 14
8 × 55
14 ± 1 N·m
1
2
3
N
N
AC
Bolt specifications
Screw diameter × length mm
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
14-23
WATER HOSE AND WATER PIPE
REMOVAL AND INSTALLATION
M1141003300642
Pre-removal and Post-installation Operation
• Engine Coolant Draining and Supplying (Refer to
• Engine Cover Removal and Installation (Refer to GROUP
11A, Camshaft and Valve Stem Seal
• Air Cleaner Assembly Removal and Installation (Refer to
GROUP 15, Air Cleaner
).
• Thermostat Removal and Installation (Refer to
AC302094
AC310936
AC302095
13 ± 2 N·m
11 ± 1 N·m
11 ± 1 N·m
24 ± 4 N·m
13 ± 2 N·m
1
2
3
4
6
7
8
9
10
11
12
13
14
15
15
N
N
7
10
Ø3 mm
AB
5
N
N
24 ± 4 N·m
Sealant: Mitsubishi Genuine Part No. MD970389
or equivalent
(Transmission fluid)
Removal steps
<<A>>
>>C<<
1.
Radiator upper hose connection
<<A>>
>>C<<
2.
Hose clips
3.
Radiator hose clamp
4.
A/T oil level gauge guide <A/T>
5.
O-ring <A/T>
6.
A/T oil level gauge guide bracket
<A/T>
>>B<<
7.
Water outlet fitting
8.
Heater hose connection
9.
Throttle body water return hose
>>B<<
10. Thermostat case
11. Heater hose connection
12. Battery harness clamp
13. Throttle body water feed hose
Removal steps (Continued)
WATER HOSE AND WATER PIPE
ENGINE COOLING
14-24
REMOVAL SERVICE POINT
<<A>> RADIATOR HOSE/HOSE CLIPS
DISCONNECTION
Break off the tip of hose clip claw and spread out the
hose clip, then disconnect the radiator hose.
NOTE: If there is a hose clip claw, the hose clip
cannot spread to capacity because the claw contacts
the hose clip.
INSTALLATION SERVICE POINTS
>>A<< O-RING INSTALLATION
CAUTION
Do not allow engine oil or other grease to adhere
to the cooling water line O-ring
Insert the cooling water line O-ring to the water pump
water inlet pipe, and coat the outer portion of the
cooling water line O-ring with water or engine
coolant.
>>B<< THERMOSTAT CASE
ASSEMBLY/WATER OUTLET HOSE
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. Apply sealant to the thread of the thermostat case
assembly bolts as shown.
Specified adhesive: 3M Stud Locking 4170 or
equivalent
4. With the sealant still wet (within 15 minutes after
the sealant is applied), install the thermostat case.
Do not apply the sealant in an area more than the
required.
>>C<< HOSE CLIPS/RADIATOR HOSE
CONNECTION
CAUTION
Never reuse the hose clip whose claw is broken
off to prevent the rusting.
1. Insert a new hose clip into the radiator upper
hose.
2. Insert the radiator upper hose until the protrusion
of the water outlet fitting.
3. Remove the hose clip claw and shorten the hose
clip, then install the radiator upper hose.
INSPECTION
M1141003400371
WATER PIPE AND HOSE CHECK
Check the water pipe and hose for cracks, damage
and clogs. Replace them if necessary.
14. Water inlet pipe
>>A<<
15. O-ring
Removal steps (Continued)
AC302615
Hose clip
Claw (Tip)
AE
AC200644 AC
O-ring
Water inlet pipe
Water pump or thermostat case
AC303724AE
Thermostat case assembly
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