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Mitsubishi Evolution X. Manual - part 199

AK702204

Notch

Identification mark

Oil hole

CAMSHAFT

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ENGINE OVERHAUL

11B-43

3. The identification mark of the camshaft bearing is stamped

at the illustrated position.

AK502390

Dowel pin

4. Set the dowel pins of the camshaft at the illustrated

positions.

AK503813

Cap No.

Identification mark

5. Install them upon checking the identification mark so as not

to misidentify cap No. and to confuse the intake side with the
exhaust side.

Identification mark

I: Intake side
E: Exhaust side

6. 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.

Specified torque: 12

± 1 N⋅ m (106 ± 8 in-lb)

AK503814

(1)

(2)

Timing chain side

CAMSHAFT

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ENGINE OVERHAUL

11B-44

7. Tighten each front camshaft bearing cap mounting bolt to

the temporarily torque of 17

± 3 N⋅ m (14 ± 2 ft-lb) in the

order shown (1).

8. Tighten each front camshaft bearing cap mounting bolt to

the specified torque in the order shown (2).

Specified torque: 30

± 2 N⋅ m (22 ± 1 ft-lb)

>>C<< O-RING / ENGINE OIL CONTROL VALVE
INSTALLATION

CAUTION

• The O-ring must not be reused.
•

AK303651AF

Tape

Wind non-adhesive tape (seal tape, etc.) around the
notch of the oil passage of the engine oil control valve
before installing the O-ring to prevent damage. Damage
to the O-ring causes oil leakage.

1. Apply a small amount of engine oil to the O-ring of the

engine oil control valve.

2. Install the engine oil control valve on the cylinder head.
3. Tighten the engine oil control valve to the specified torque.

Specified torque: 10

± 2 N⋅ m (89 ± 17 in-lb)

INSPECTION

M1113027000466

CAMSHAFT

AK503020AD

Measure camshaft height (camshaft major axis). If the height is
less than the limit, replace the camshaft.

Standard value:

Intake: 44.1 mm (1.74 inches)
Exhaust: 45.0 mm (1.77 inches)

Limit:

Intake: 43.6 mm (1.72 inches)
Exhaust: 44.5 mm (1.75 inches)

CAMSHAFT

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ENGINE OVERHAUL

11B-45

CAMSHAFT OIL CLEARANCE (PLASTIGAGE
METHOD)

1. Thoroughly wipe oil on the outside diameter of the camshaft

and the inside diameter of the bearing.

2. Install the bearing to the camshaft.

AK503390

Plastigage

3. Put straightly the plastigage having the length of the bearing

width on the journal axis, centering the axis.

4. Carefully install the bearing cap.Tighten the bolt as

instructed in >>B<< Bolt Installation Point.

5. Remove the bolt and the bearing cap carefully.

AK503391

Plastigage

6. Measure the plastigage whose width is most compressed

using the scale printed on the plastigage bag. When the
measured value deviates from the standard one, replace the
bearing.

Standard value: 0.035

− 0.072 mm (0.0014 − 0.0028 inch)

CAUTION

When the bearing is used again, be careful not to reverse
the cylinder head side and the camshaft side during instal-
lation.

VALVE TAPPET

AK304938

Wall thickness

1. Measure the valve tappet at the illustrated position. If the

measured value is not in agreement with the value in the
table corresponding to the identification mark, replace the
valve tappet.

AK703500AF

Thickness stamp

Under view

2. The valve tappet has an identification mark and stamping of

thickness at illustrated positions.
There are 47 kinds of valve tappets at intervals of 0.015 mm
(0.0006 inch) in the range between 3.000 mm (0.1181 inch)
and 3.690 mm (0.1453 inch).

Thickness mm
(in)

Thickness
stamp

Thickness mm
(in)

Identification
mark

Thickness mm
(in)

Identification
mark

3.000 (0.1181)

3.000

3.240 (0.1276)

3.240

3.480 (0.1370)

3.480

3.015 (0.1187)

3.015

3.255 (0.1281)

3.255

3.495 (0.1376)

3.495

3.030 (0.1193)

3.030

3.270 (0.1287)

3.270

3.510 (0.1382)

3.510

3.045 (0.1199)

3.045

3.285 (0.1293)

3.285

3.525 (0.1388)

3.525

3.060 (0.1205)

3.060

3.300 (0.1299)

3.300

3.540 (0.1394)

3.540

3.075 (0.1211)

3.075

3.315 (0.1305)

3.315

3.555 (0.1400)

3.555

3.090 (0.1217)

3.090

3.330 (0.1311)

3.330

3.570 (0.1406)

3.570

3.105 (0.1222)

3.105

3.345 (0.1317)

3.345

3.585 (0.1411)

3.585

3.120 (0.1228)

3.120

3.360 (0.1323)

3.360

3.600 (0.1417)

3.600

3.135 (0.1234)

3.135

3.375 (0.1329)

3.375

3.615 (0.1423)

3.615

3.150 (0.1240)

3.150

3.390 (0.1335)

3.390

3.630 (0.1429)

3.630

3.165 (0.1246)

3.165

3.405 (0.1341)

3.405

3.645 (0.1435)

3.645

3.180 (0.1252)

3.180

3.420 (0.1346)

3.420

3.660 (0.1441)

3.660

3.195 (0.1258)

3.195

3.435 (0.1352)

3.435

3.675 (0.1447)

3.675

3.210 (0.1264)

3.210

3.450 (0.1358)

3.450

3.690 (0.1453)

3.690

3.225 (0.1270)

3.225

3.465 (0.1364)

3.465

CAMSHAFT

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ENGINE OVERHAUL

11B-46

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