Mitsubishi Outlander XL. Manual — part 182
Removal steps
19. EXHAUST VALVE SEAT
Removal steps
20. CYLINDER HEAD
Required Special Tools:
⦆
MB991614: Angle Gauge
⦆
MB992085: Valve Stem Seal Plier
⦆
MB992182: Valve Stem Seal Installer
⦆
MD998735: Valve Spring Compressor
REMOVAL SERVICE POINTS
<<A>> RETAINER LOCK REMOVAL
ZK602106AA00
MD998735
1.
Using special tool MD998735, compress the spring.
2.
Remove the retainer locks.
<<B>> VALVE STEM SEAL REMOVAL
ZK602107AA00
MB992085
Using the special tool MB992085, nip the valve stem seal and
remove it.
INSTALLATION SERVICE POINTS
>>A<< VALVE STEM SEAL INSTALLATION
ZK6021190000
Exhaust valve
stem seal
Color: gray green
Intake valve
stem seal
Color: gray
1.
Install the valve spring seat to the valve guide.
⦆
Valve stem seals for intake valves and for exhaust
valves are different. Be sure to install the correct ones.
⦆
Valve stem seal identification color.
Intake: GRAY
Exhaust: GRAY GREEN
ENGINE OVERHAUL
11B-47
CYLINDER HEAD AND VALVES
ZK602108AA00
MB992182
⦆
Always use the special tool to install the valve stem seal.
Improperly installed valve stem seals may leak oil.
⦆
Do not strike the valve stem seal strongly because it
might be damaged.
2.
Using special tool MB992182, install a new stem seal to the
valve guide.
NOTE:
After install, check the special tool does not
stick to the valve spring sheet. Put the valve spring
sheet in position.
>>B<< VALVE SPRING INSTALLATION
ZK602120
Identification color
painted end
0000
Install the valve spring end with its identification color toward the
spring retainer.
Identification color
Intake: Red
Exhaust: Green
>>C<< RETAINER LOCK INSTALLATION
ZK602106AA00
MD998735
Using special tool MD998735, compress the valve spring and
insert the retainer lock into position.
11B-48
ENGINE OVERHAUL
CYLINDER HEAD AND VALVES
>>D<< CYLINDER HEAD BOLT INSTALLATION
ZK602105 AA00
ZK6021210000
Timing belt side
Right
bank
Left
bank
Attach the head bolt washer in the direction shown in the
figure.
1.
Tighten the bolts in the illustrated sequence two or three
rounds.
Tightening torque: 45 ± 2 N·m (33 ± 1 ft-lb)
ZK6019020000
150°
MB991614
⦆
If the bolt is turned less than 150 degrees, proper
fastening performance may not be achieved. Be sure to
turn the bolt exactly 150 degrees.
⦆
If the bolt is overtightened, loosen the bolt completely and
then retighten it by repeating the tightening procedure
from step 1.
2.
Using the special tool MB991614, tighten the cylinder head
bolt another 150 degrees.
CYLINDER HEAD
M11103000905USA0000010000
ZK602122 0000
1.
Check the cylinder head gasket surface for flatness by using
a straight edge and feeler gauge.
Standard value: 0.03 mm (0.0012 inch)
Limit: 0.05 mm (0.002 inch)
2.
If the service limit is exceeded, correct to meet the
specification.
Grinding limit: *0.15 mm (0.006 inch)
* Includes combined with cylinder block grinding.
*If the service limit is exceeded, correct to meet the
specification.
Cylinder head height (specification when new):
120 mm (4.7 inches)
ENGINE OVERHAUL
11B-49
CYLINDER HEAD AND VALVES
VALVE INSPECTION
M11103000906USA0000010000
ZK500346AA00
Margin
Contact
(should be at
center of face)
1.
Check the valve seat contact. Valve seat contact should be
uniform at the center of the valve face. If incorrect, reface using
a valve refacer.
2.
If the margin is below the limit, replace the valve.
Standard value:
Intake 1.0 mm (0.03 inch)
Exhaust 1.2 mm (0.04 inch)
Minimum limit:
Intake 0.5 mm (0.02 inch)
Exhaust 0.7 mm (0.03 inch)
ZK500347AA00
Total length
3.
Measure the valve's total length. If the measurement is less
than the limit, replace the valve.
Standard value:
Intake 111.84 mm (4.403 inches)
Exhaust 114.04 mm (4.490 inches)
Minimum limit:
Intake 111.34 mm (4.384 inches)
Exhaust 113.54 mm (4.470 inches)
VALVE SPRING
M11103000907USA0000010000
ZK500348AA00
Free hight
Out of square
1.
Measure the free height of the spring. If it is less than the limit,
replace.
Standard value:
Intake 59.15 mm (2.329 inches)
Exhaust 57.70 mm (2.272 inches)
Minimum limit:
Intake 58.15 mm (2.289 inches)
Exhaust 56.70 mm (2.232 inches)
2.
Measure the squareness of the spring. If it exceeds the limit,
replace.
Standard value: 2 degrees or less
Limit: 4 degrees
VALVE GUIDE INSPECTION
M11103000908USA0000010000
11B-50
ENGINE OVERHAUL
CYLINDER HEAD AND VALVES
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