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