Mitsubishi Grandis. Manual - part 641

TIMING BELT

ENGINE MECHANICAL

11A-41

CAUTION

When tightening the mounting bolt, ensure that 
the timing belt tensioner pulley does not rotate 
with the bolt. Allowing it to rotate with the bolt 
can cause deficient tension of the belt.

6. With special tool tensioner wrench (MD998767) 

and torque wrench, apply tension torque 3.5 N

⋅m 

to the valve timing belt, and tighten the timing belt 
tensioner pulley mounting bolt to the specified 
torque.

Tightening torque: 48 

± 5 N⋅m

7. Remove wire or pin inserted to timing belt 

tensioner adjuster.

8. Remove special tool adjusting bolt (MD998738), 

and install the rubber plug to the timing belt under 
cover.

9. Rotate crankshaft clockwise two turns, and leave 

it for about 15 minutes.

10.Insert wire or pin removed in Step 7 again, and 

ensure that it can be pulled out with a light load. 
When wire or pin can be lightly removed, 
appropriate tension is applied on timing belt. In 
this case, remove wire or pin.

Also the projection of timing belt tensioner 
adjuster rod (A) is within the standard value, 
appropriate tension is applied. 

Standard value (A): 3.8 

− 4.5 mm

11.If wire or pin cannot be easily pulled out, repeat 

Step 1 through Step 9 to reach proper valve timing 
belt tension.

AC301859

MD998767

AB

AC301857AB

Wire or pin

AC301452AB

MD998738

Timing belt
under cover

AC301857AB

Wire or pin

AC301375

AB

A

Rod

TIMING BELT

ENGINE MECHANICAL

11A-42

CAUTION

Always check the tightening torque of the 
crankshaft pulley centre bolt when turning the 
crankshaft pulley centre bolt anti-clockwise. 
Re-tighten if it is loose.

12.Check again that the timing marks on sprockets 

are aligned.

INSPECTION

M1112004400501

TIMING BELT TENSIONER ADJUSTER 
CHECK

1. Check for oil leak from seal, and replace it if leak 

is detected.

2. Check for wear or damage at the top of the rod. 

Replace it, if required.

3. Hold the timing belt tensioner adjuster by hand, 

and press top end of the rod onto the metal (e.g. 
cylinder block) under a pressure of 98 

− 196 N to 

measure the movement of the rod.

Standard value: Within 1 mm

A: Length when it is free (not pressed)
B: Length when it is pressed
A 

− B: Movement

4. If the measured value is out of the standard value, 

replace the timing belt tensioner adjuster.

BALANCER TIMING BELT TENSION 
CHECK 

Check the balancer timing belt tension in the 
following procedures.

1. Apply a pressure of approximately 100 N at the 

centre (arrow area) between the sprocket as 
shown in the figure, then inspect whether the 
flexure is within the standard value.

Standard value: 5 

− 10 mm

2. If not within the standard value, adjust the belt 

tension. (Refer to 

P.11A-33

).

AC301866

AB

Timing mark

Crankshaft
camshaft
drive sprocket

Camshaft
sprocket

Timing mark

Timing mark

Engine oil pump 
sprocket

AC301376

AB

A

B

98 – 196 N

Rod

Movement

AC301405AB

Deflection

Approximately 100 N

ENGINE ASSEMBLY

ENGINE MECHANICAL

11A-43

ENGINE ASSEMBLY

REMOVAL AND INSTALLATION

M1112001001091

CAUTION

*: indicates parts which should be temporarily tightened, and then fully tightened with the engine 
weight applied on the vehicle body.

Pre-removal Operation
• Fuel Line Pressure Reduction [Refer to GROUP 13A, 

On-vehicle Service 

− Fuel Pump Relay Disconnection 

(How to Reduce Pressurized Fuel Lines) 

P.13A-386

].

• Engine room side cover (RH) Removal.
• Engine Oil Draining (Refer to GROUP 12, On-vehicle 

Service 

− Engine Oil Replacement 

P.12-3

).

• Engine Coolant Draining (Refer to GROUP 14, On-vehicle 

Service 

− Engine Coolant Replacement 

P.14-17

).

• Transmission Oil Draining (Refer to GROUP 22A, 

On-vehicle Service 

− Transmission Oil Replacement 

P.22A-6

).

• Catalytic Converter Removal (Refer to GROUP 15, 

Exhaust Pipe and Main Muffler 

P.15-9

). 

• Front Exhaust Pipe Removal (Refer to GROUP 15, 

Exhaust Pipe and Main Muffler 

P.15-9

).

• Hood Removal (Refer to GROUP 42, Hood 

P.42-5

).

• Engine Cover Removal (Refer to 

P.11A-16

).

• Air Cleaner Removal (Refer to GROUP 15, Air Cleaner 

P.15-3

).

• Battery and Battery Tray Removal.

Post-installation Operation
• Battery and Battery Tray Installation

• Air Cleaner Installation (Refer to GROUP 15, Air Cleaner 

P.15-3

).

• Engine Cover Installation (Refer to 

P.11A-16

).

• Hood Installation (Refer to GROUP 42, Hood 

P.42-5

).

• Front Exhaust Pipe Installation (Refer to GROUP 15, 

Exhaust Pipe and Main Muffler 

P.15-9

).

• Catalytic Converter Installation (Refer to GROUP 15, 

Exhaust Pipe and Main Muffler 

P.15-9

). 

• Transmission Oil Refilling (Refer to GROUP 22A, 

On-vehicle Service 

− Transmission Oil Replacement 

P.22A-6

).

• Engine Coolant Refilling (Refer to GROUP 14, On-vehicle 

Service 

− Engine Coolant Replacement 

P.14-17

).

• Engine Oil Refilling (Refer to GROUP 12, On-vehicle 

Service 

− Engine Oil Replacement 

P.12-3

).

• Fuel Leak Check

• Drive Belt Tension Check (Refer to 

P.11A-7

).

• Engine room side cover (RH) Installation.

ENGINE ASSEMBLY

ENGINE MECHANICAL

11A-44

AC312968AB

1

7

5

4

3

2

5.0 ± 1.0 N·m

9.0 ± 2.0 N·m

9.0 ± 2.0 N·m

14 ± 3 N·m

6

Removal steps

1.

Control wiring harness connection 

2.

Battery wiring harness connection 

3.

Canister vacuum hose connection

>>F<<

4.

Brake booster vacuum hose 
connection

5.

Power steering oil pressure sensor 
connector

6.

Engine oil level sensor connector

<<A>>

7.

Drive belt

Removal steps (Continued)