Mitsubishi Evolution X. Manual — part 197
TIMING CHAIN
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ENGINE OVERHAUL
11B-35
REMOVAL SERVICE POINTS
.
<<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.
.
<<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.
.
<<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
.
>>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)
.
>>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
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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)
.
>>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
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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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