Mitsubishi Grandis. Manual - part 640

 

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Mitsubishi Grandis. Manual - part 640

 

 

TIMING BELT

ENGINE MECHANICAL

11A-37

>>B<< BALANCER TIMING BELT 
TENSION ADJUSTMENT

CAUTION

When tightening the mounting bolts, ensure that 
the tensioner does not rotate with the bolts. 
Allowing it to rotate with the bolts can cause 
excessive tension of the belt.

1. Lift with your fingers the balancer timing belt 

tensioner in the direction of the arrow. Apply a 
tensile torque of 3.0 

± 0.4 N⋅m to the balancer 

timing belt so the belt is tense without any 
looseness. Tighten the assembling bolt to the 
specified torque in this state. Then, fix the 
balancer timing belt tensioner.

Tightening torque: 19 

± 3 N⋅m

2. Turn the crankshaft clockwise two turns to set 

No.1 cylinder to TDC of its compression stroke 
and check that sprocket timing marks are aligned.

3. Apply a pressure of approximately 100 N at the 

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

Standard value:

<When adjusting> 5 

− 7 mm

<When replacing> 5 

− 7 mm

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

tension again.

>>C<< CRANKSHAFT ANGLE SENSING 
BLADE/CRANKSHAFT CAMSHAFT 
DRIVE SPROCKET/CRANKSHAFT 
PULLEY WASHER/CRANKSHAFT 
PULLEY CENTRE BOLT INSTALLATION

1. Clean or degrease the crankshaft, the crankshaft 

angle sensing blade, the crankshaft camshaft 
drive sprocket and crankshaft pulley washer as 
shown.

AC301404

AC301402AC

Balancershaft 
sprocket

Timing 
mark

Crankshaft
balancershaft
drive sprocket

Timing 
mark

AC301405AB

Deflection

Approximately 100 N

AC301347

AB

: Clean

: Apply engine oil

: Clean and degrease

Crankshaft camshaft 
drive sprocket

Crankshaft pulley 
centre bolt

Crankshaft

Crankshaft angle 
sensing blade

Crankshaft 
pulley washer

Engine front

TIMING BELT

ENGINE MECHANICAL

11A-38

NOTE: Also clean the degreased surfaces.

2. Install the crankshaft angle sensing blade and 

crankshaft camshaft drive sprocket in the 
direction shown.

3. Place the larger chamfer side of the crankshaft 

pulley washer in the direction shown in the Figure 
and then assemble on the crankshaft pulley 
centre bolt.

4. Apply a small of engine oil to the crankshaft pulley 

centre bolt bearing surface and screw.

5. Use the following special tool as during removal to 

hold the crankshaft camshaft drive sprocket.

• Special spanner (MB991367)

• Pin (MB991385)

6. Tighten the crankshaft pulley centre bolt to the 

specified torque.

Tightening torque: 167 N

⋅m

>>D<< TIMING BELT TENSIONER 
ADJUSTER INSTALLATION

1. Set according to the following procedures when 

the timing belt tensioner adjuster rod is fully 
extended.

CAUTION

If the compression is too fast the procedure may 
damage the rod. Make a point to slowly and 
thoroughly compress.

(1) Slowly compress the timing belt tensioner 

adjuster rod using a press or vice, then align 
the set hole A of the rod with set hole B of the 
timing belt tensioner adjuster cylinder.

(2) Insert a wire or pin in the set hole aligned.

NOTE: When replacing the timing belt 
tensioner adjuster with new parts, the timing 
belt tensioner adjuster is set with a pin.

2. Install the timing belt tensioner adjuster to the 

engine and then tighten the mounting bolt to the 
specified torque. Do not remove the wire or pin 
until the tension of the valve timing belt is 
adjusted. 

Tightening torque: 23 

± 3 N⋅m

>>E<< TIMING BELT TENSIONER 
PULLEY INSTALLATION

Temporarily tighten the timing belt tensioner pulley 
as shown.

AC102332AB

MB991385

MB991367

Crankshaft
camshaft
drive 
sprocket

AC302024

A

AB

B

AC302025AB

Wire or pin

AC102336AB

Timing belt tensioner
pulley hole  

TIMING BELT

ENGINE MECHANICAL

11A-39

>>F<< VALVE TIMING BELT 
INSTALLATION

1. Align the timing marks on the camshaft sprocket, 

crankshaft camshaft drive sprocket and engine oil 
pump sprocket.

2. Adjust the timing mark of the engine oil pump 

sprocket. Unplug the cylinder block plug. Insert a 
bolt (M6, section width 10 mm, nominal length 45 
mm) from the plug hole. If the bolt comes in 
contact with the balancer shaft, turn the engine oil 
sprocket one rotation. Re-adjust the timing mark 
and then check to see that the bolt fits. Do not 
remove the bolt until the valve timing belt is 
assembled.

3. Incorporate the valve timing belt in the following 

manner so that the tensile force of the belt is not 
lax. 
(1) Place the valve timing belt on the timing belt 

tensioner pulley and crankshaft camshaft 
driver sprocket and then support it with your 
left hand so it does not slide.

(2) Place the valve timing belt on the engine oil 

pump sprocket while pulling it with the right 
hand.

(3) Place the valve timing belt on the timing belt 

idler pulley.

CAUTION

Incorporate the valve timing belt. Then apply 
reverse rotation (anti-clockwise rotation) 
pressure to the camshaft sprocket. Re-check to 
see that each timing mark is aligned while the 
tension side of the belt is right.

(4) Place the valve timing belt on the camshaft 

sprocket.

AC301374

AB

Timing mark

Crankshaft
camshaft
drive sprocket

Camshaft
sprocket

Timing mark

Timing mark

Engine oil pump 
sprocket

AC301871AB

Bolt

Plug

Cylinder block

Balancershaft

AC301372

AC

Crankshaft
camshaft
drive sprocket

Camshaft
sprocket

Engine oil pump 
sprocket

Timing belt 
tensioner
pulley

Timing belt 
Idler pulley

Belt tension 
side

AC301858

MD998767

AB

TIMING BELT

ENGINE MECHANICAL

11A-40

4. Turn the timing belt tensioner pulley in the 

direction shown in the figure using special tool 
tensioner wrench (MD998767) to apply tension to 
the valve timing belt. Then temporarily tighten and 
fix the timing belt tensioner pulley mounting bolt.

5. Check that the timing marks are aligned.

6.  Remove the bolt inserted in Step 2 above, then 

assemble the cylinder block plug.

7. Tighten the cylinder block plug to the specified 

torque.

Tightening torque: 30 

± 3 N⋅m

8. Adjust the valve timing belt tension.

>>G<< VALVE TIMING BELT TENSION 
ADJUSTMENT 

1. Set special tool adjusting bolt (MD998738) used 

when removing the valve timing belt.

CAUTION

Always screw in the special tool in with your 
hands, since use of a spanner or other tools may 
damage the wire or pin inserted in the timing belt 
tensioner adjuster. 
2. Gradually screw in the special tool to a position in 

which the wire or pin inserted in the timing belt 
tensioner adjuster lightly moves. 

3. Turn the crankshaft 1/4 of a revolution in the 

anti-clockwise direction.

4. Turn the crankshaft in the clockwise direction, 

align each timing mark to set No.1 cylinder to TDC 
of its compression stroke.

5. Loosen the timing belt tensioner pulley mounting 

bolt.

AC301372

AB

Timing mark

Crankshaft
camshaft
drive sprocket

Camshaft
sprocket

Timing mark

Timing mark

Engine oil pump 
sprocket

AC301871AB

Bolt

Plug

Cylinder block

Balancershaft

AC301452AB

MD998738

Timing belt
under cover

AC301372

AB

Timing mark

Crankshaft
camshaft
drive sprocket

Camshaft
sprocket

Timing mark

Timing mark

Engine oil pump 
sprocket

 

 

 

 

 

 

 

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