Mitsubishi Evolution X. Manual — part 176

CAMSHAFT

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ENGINE MECHANICAL

11A-35

<<H>> POWER STEERING OIL PUMP ASSEMBLY
REMOVAL

1. With the hose installed, remove the power steering oil pump

assembly from the bracket.

2. Tie the removed power steering oil pump assembly with a

string at a position where it will not interfere with the removal
and installation of oil control valve.

.

<<I>> OIL FEEDER CONTROL VALVE REMOVAL

CAUTION

After removal of the oil feeder control valve, be careful to
prevent dust from getting into the oil passage in the cylin-
der head.

INSTALLATION SERVICE POINTS

.

>>A<< O-RING/OIL FEEDER CONTROL VALVE
INSTALLATION

CAUTION

When installing the oil control valve, be careful to avoid
damage to the O-ring.
Apply engine oil to the O-ring of the oil feeder control valve and
install the oil feeder control valve to the cylinder head.

.

>>B<< CAMSHAFT/CAMSHAFT SPROCKET
INSTALLATION

CAUTION

The camshaft sprocket bolt cannot be reused.
Install the camshaft and camshaft sprocket assembly as fol-
lows.
1. Check that the knock pin is set to the right overhead

position.

2. an adequate and minimum amount of engine oil to the outer

of the camshaft edge and the entire insertion area around
camshaft sprocket assembly.

3. Set the knock pin hole of camshaft sprocket assembly to the

right overhead position, and slowly insert it into the camshaft
assembly to the specified position.

4. Install the camshaft sprocket to the camshaft.
5. Apply an adequate and minimum amount of engine oil to the

thread of the camshaft sprocket bolt and the lower area of
the flange.

AC708506AC

Camshaft

Camshaft
sprocket

Camshaft
sprocket bolt

CAMSHAFT

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ENGINE MECHANICAL

11A-36

6. Clamp the flats of the camshaft and fix it in the same manner

as removal.

7. Tighten the camshaft sprocket bolt to the specified torque.

Tightening torque: 85

± 5 N⋅ m (63 ± 4 ft-lb)

.

>>C<< CAMSHAFT AND CAMSHAFT SPROCKET
ASSEMBLY (INTAKE SIDE) INSTALLATION

1. Align the intake side paint mark of the timing chain which

was put at removal with the paint mark of the intake side
camshaft sprocket, and install the camshaft sprocket to the
timing chain.

2. Install the camshaft and camshaft sprocket assembly (intake

side) to the cylinder head.

.

>>D<< THRUST CAMSHAFT BEARING
CAP/CAMSHAFT BEARING CAP/OIL FEEDING
CAMSHAFT BEARING CAP/CAMSHAFT
BEARING INSTALLATION

1. Install the camshaft bearing caps to the cylinder heads.

NOTE: Because the thrust camshaft bearing cap and cam-
shaft bearing cap are the same in shape, check the bearing
cap number and additionally its symbol to identify the intake
and exhaust sides for correct installation.

2. Tighten each camshaft bearing cap mounting bolt to the

specified torque in the order of number shown in the figure
in two or three steps.

Tightening torque: 12

± 1 N⋅ m (107 ± 8 in-lb)

.

AC611532AB

Hexagon part
of camshaft

AC509403

AE

Paint markings
(intake side)

AC506778

AC

8

8

7

7

6

6

5

5

4

4

3

3

2

2

1

1

E 5

Engine front

Camshaft bearing cap

Camshaft bearing cap

Bearing cap No.

Identification of intake side
and exhaust side

CAMSHAFT

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ENGINE MECHANICAL

11A-37

>>E<< CAMSHAFT BEARING/CAMSHAFT AND
CAMSHAFT SPROCKET ASSEMBLY (EXHAUST
SIDE) INSTALLATION

CAUTION

Be careful not to drop the camshaft bearing.
1. When replacing the camshaft bearing, according to the

identification mark of front camshaft bearing cap in the table
below, select a camshaft bearing with the corresponding
size. Note that the identification mark of camshaft bearing is
stamped on the place shown in the figure.

Front camshaft bearing cap

Camshaft bearing
identification mark

Identification
mark

Journal diameter
mm (in)

1

40.000 - 40.008
(1.5748 - 1.5751)

1

2

40.008 - 40.016
(1.5751 - 1.5754)

2

3

40.016 - 40.024
(1.5754 - 1.5757)

3

AC611697

AD

Front camshaft
bearing cap

Identification
mark

AC708893

Notch

Identification mark

Oil hole

AD

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ENGINE MECHANICAL

11A-38

2. In the same manner as removal, insert the precision

flat-tipped screwdriver through the service hole of the timing
chain case, press up the ratchet of timing chain tensioner to
unlock, and hold the unlocked timing chain tensioner.
NOTE: Lightly press down the tail end of the precision
flat-tipped screwdriver to press up the tip of the precision
flat-tipped screwdriver inserted to the timing chain tensioner
to unlock.

AC509155

AC

Section A-A

A

A

Precision flat-tipped
screwdriver

Service hole

Crankshaft pulley

Service hole

Ratchet

Precision flat-tipped screwdriver

Ratchet
release hole

Timing chain
tensioner

Ratchet

Ratchet
release hole

Timing chain tensioner
construction diagram