Mitsubishi Evolution X. Manual - part 197

TIMING CHAIN

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ENGINE OVERHAUL

11B-35

REMOVAL SERVICE POINTS

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<<A>> TIMING CHAIN TENSIONER REMOVAL

AK502854 AG

Wire

Ratchet release hole

Plunger fixed
hole

1. Insert a flatblade screwdriver into the release hole of the 

timing chain tensioner to release the latch.

2. Push the tensioner lever by hand and push in the plunger of 

the timing chain tensioner until it hits the bottom. Then, 
insert a hard wire (piano wire or the like) of 

φ1.5 or 

hexagonal bar wrench (1.5 mm [0.05 inch]) into the fixing 
hole of the plunger.

3. Remove the timing chain tensioner.

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<<B>> EXHAUST V.V.T. SPROCKET BOLT 
REMOVAL

AK502737

Hold the hexagonal portion of the exhaust camshaft with a 
wrench and loosen the exhaust V.V.T. sprocket bolt.

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<<C>> INTAKE V.V.T. SPROCKET BOLT REMOVAL

AK502736

Hold the hexagonal portion of the intake camshaft with a 
wrench and loosen the intake V.V.T. sprocket bolt.

TIMING CHAIN

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ENGINE OVERHAUL

11B-36

INSTALLATION SERVICE POINTS

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>>A<< INTAKE V.V.T. SPROCKET BOLT INSTAL-
LATION

AK503070AD

V.V.T. sprocket

V.V.T. sprocket bolt

Camshaft

1. Assemble the intake V.V.T. sprocket assembly in the 

following procedure.

• Make sure that the knock pin of the inlet camshaft assembly 

is positioned facing straight upward.

• Apply an appropriate and minimum amount of engine oil to 

the circumference of the tip of the intake V.V.T. sprocket 
assembly and the entire circumference of the area into 
which the intake V.V.T. sprocket assembly is inserted.

• Slowly insert the intake V.V.T. sprocket assembly into the 

normal position of the inlet camshaft assembly with its 
knock pin hole facing straight upward.

2. Install the V.V.T. sprocket.
3. Make sure that the V.V.T. sprocket is securely inserted into 

the bottom and that the V.V.T. sprocket does not rotate with 
the hexagonal portion of the camshaft secured with a 
wrench.

AK502739

4. Hold the hexagonal portion of the camshaft with a wrench 

and tighten the intake V.V.T. sprocket bolt to the specified 
torque.

Specified torque: 85 

± 5 N⋅ m (63 ± 3 ft-lb)

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>>B<< EXHAUST V.V.T. SPROCKET BOLT 
INSTALLATION

1. Assemble the exhaust V.V.T. sprocket assembly in the 

following procedure.

• Make sure that the knock pin of the exhaust camshaft 

assembly is positioned facing straight upward.

• Apply an appropriate and minimum amount of engine oil to 

the circumference of the tip of the exhaust V.V.T. sprocket 
assembly and the entire circumference of the area into 
which the exhaust V.V.T. sprocket assembly is inserted.

• Slowly insert the exhaust V.V.T. sprocket assembly into the 

normal position of the exhaust camshaft assembly with its 
knock pin hole facing straight upward.

2. Install the V.V.T. sprocket.
3. Make sure that the V.V.T. sprocket is securely inserted into 

the bottom and that the V.V.T. sprocket does not rotate with 
the hexagonal portion of the camshaft secured with a 
wrench.

AK502738

TIMING CHAIN

TSB Revision

ENGINE OVERHAUL

11B-37

4. Hold the hexagonal portion of the camshaft with a wrench 

and tighten the camshaft sprocket bolt to the specified 
torque.

Specified torque: 85 

± 5 N⋅ m (63 ± 3 ft-lb)

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>>C<< TIMING CHAIN INSTALLATION

AK703595AC

Timing mark

Crankshaft key

1. Align the timing mark of the V.V.T. sprocket.
2. Align the crankshaft sprocket key with illustrated positions.

AK502910AG

Timing mark

Link plate (blue)

3. Align the link plate (blue) with the timing mark of the exhaust 

V.V.T. sprocket and loop the timing chain.

AK502757AG

Timing mark

Link plate
(blue)

TIMING CHAIN

TSB Revision

ENGINE OVERHAUL

11B-38

4. Align the link plate (blue) with the timing mark of the intake 

V.V.T. sprocket to loop the timing chain. 
 Rotate the intake V.V.T. sprocket by one or two teeth to 
align with the timing mark.

AK703594

Timing mark

Link plate (blue)

AD

5. Align the timing mark of the crankshaft sprocket with the link 

plate (blue) to loop the timing chain. Because of timing chain 
slacks, hold it to prevent the timing mark from coming off the 
link plate (blue).

AK502909

Timing mark
link plate (blue)

Timing mark
link plate (blue)

Timing mark
link plate (blue)

Crankshaft
sprocket
Timing mark

V.V.T. intake
sprocket
timing mark

V.V.T. exhaust
sprocket
timing mark

AJ

6. Make sure that the timing mark of each sprocket is aligned 

with the link plate (blue) of the timing chain at all of three 
locations.

7. Install the timing chain guide and tensioner lever.

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