Content .. 633 634 635 636 ..

Mitsubishi Grandis. Manual - part 635

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-17

AC312949

30*

29*

28*

27*

26*

30*

27*

26*

14 ± 1 N·m

22 ± 4 N·m

13 ± 1 N·m

31 ± 3 N·m

47 ± 7 N·m

25 ± 4 N·m

89 ± 9 N·m

Apply engine oil to all
moving parts before
installation.

31*

11 ± 1 N·m

Camshaft removal steps

13. Connector bracket

>>I<<

14. Camshaft position sensor support
15. Camshaft position sensing cylinder

<<A>>

>>H<<

16. Camshaft sprocket

>>G<<

17. Camshaft oil seal

>>F<<

18. Exhaust rocker arm shaft caps

<>

>>F<<

19. Exhaust rocker arm and shaft

assembly

>>E<<

20. Inlet rocker arm shaft caps

<>

>>E<<

21. Inlet rocker arm and shaft assembly

>>D<<

22. Camshaft
•

Water inlet fitting and thermostat
case assembly (Refer to GROUP
14, Water Hose and Water Pipe

P.14-23

23. Cylinder head plug
24. Oil control valve filter

Valve stem seal removal steps

•

Timing belt upper cover (Refer to

P.11A-33

)

Engine cover

Engine cover bracket

Rocker cover PCV hose connection

Rocker cover breather hose
connection

•

Air cleaner (Refer to GROUP 15,
Air cleaner

P.15-3

)

•

Ignition coils (Refer to GROUP 16,
Ignition System

− Ignition Coil

P.16-27

)

Control wiring harness connection

Engine hanger

Rocker cover assembly

10. Rocker cover gasket
11. Spark plug guide oil seals

>>F<<

18. Exhaust rocker arm shaft caps

<>

>>F<<

19. Exhaust rocker arm and shaft

assembly

>>E<<

20. Inlet rocker arm shaft caps

<>

>>E<<

21. Inlet rocker arm and shaft assembly
25. Spark plugs

<<C>>

>>C<<

26. Valve spring retainer locks
27. Valve spring retainer

>>B<<

28. Inlet valve spring

>>B<<

29. Exhaust valve spring

>>A<<

30. Valve stem seals
31. Valve spring seats

Valve stem seal removal steps

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-18

REMOVAL SERVICE POINTS
<<A>> CAMSHAFT SPROCKET
REMOVAL

1. Use the following special tools to hold the

camshaft sprocket.

• Front hub and flange yoke holder (MB990767)

• Pin (MD998719)

2. Loosen the camshaft sprocket mounting bolt and

remove the camshaft sprocket.

<> EXHAUST ROCKER ARM AND
SHAFT ASSEMBLY/INLET ROCKER ARM
AND SHAFT ASSEMBLY REMOVAL

CAUTION

Never disassemble the exhaust rocker arm and
shaft assembly, and inlet rocker arm and shaft
assembly.

<<C>> VALVE SPRING RETAINER LOCKS
REMOVAL

CAUTION

When removing valve spring retainer locks, leave
the piston of each cylinder in the TDC (Top Dead
Centre) position. The valve may fall into the
cylinder if the piston is not properly in the TDC
position.

Use special tool valve spring compressor
(MD998772) to compress the valve spring and then
remove the valve spring retainer lock.

INSTALLATION SERVICE POINTS
>>A<< VALVE STEM SEALS
INSTALLATION

1. Apply a small amount of engine oil to the valve

stem seals.

CAUTION

• Do not re-use the valve stem seal.
• Special tool valve stem seal installer

(MD998774) must be used to install the valve
stem seal. Improper installation could result
in oil leaking past the valve guide.

2. Use the special tool to fill a new valve stem seal in

the valve guide using the valve stem area as a
guide.

>>B<< EXHAUST VALVE SPRINGS/INLET
VALVE SPRINGS INSTALLATION

Install the valve springs with its identification colour
painted end facing the locker arm.

AC102532 AB

MB990767

MD998719

AC301867

MD998772

AC308654AB

MD998774

Valve

Valve guide

Valve stem
seal

AC107415

Rocker arm side

Identification
colour
Inlet side:
Light blue
Exhaust side:
Orange

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-19

>>C<< VALVE SPRING RETAINER LOCKS
INSTALLATION

Use special tool valve spring compressor
(MD998772) to compress the valve spring and then
install the valve spring retainer lock in the same
manner as removal.

>>D<< CAMSHAFT INSTALLATION

Set the dowel pin of the camshaft in the position
shown in the figure.

>>E<< INLET ROCKER ARM AND SHAFT
ASSEMBLY/INLET ROCKER ARM SHAFT
CAPS INSTALLATION

1. Place the inlet rocker shaft so that its 5.5 mm hole

faces toward the cylinder head.

2. Install the inlet rocker arm shaft caps.
3. Tighten the inlet rocker shaft mounting bolts to the

specified torque.

Tightening torque: 31

± 3 N⋅m

>>F<< EXHAUST ROCKER ARM AND
SHAFT ASSEMBLY/EXHAUST ROCKER
ARM SHAFT CAPS INSTALLATION

1. Install the exhaust rocker shaft so that its notch is

positioned as shown.

2. Install the exhaust rocker arm shaft caps.
3. Tighten the exhaust rocker shaft mounting bolts to

the specified torque.

Tightening torque: 13

± 1 N⋅m

>>G<< CAMSHAFT OIL SEAL
INSTALLATION

1. Apply engine oil to the entire inner diameter of the

oil seal lip.

2. Use special tool camshaft oil seal installer

(MD998713) to press-fit the oil seal as shown.

AC301867

MD998772

AC301868

Dowel pin

AC301869

φ 5.5 mm

Engine front

AC301870

Engine front

Notch

AC102323AC

MD998713

Camshaft oil seal

(Engine oil)

CAMSHAFT AND VALVE STEM SEAL

ENGINE MECHANICAL

11A-20

>>H<< CAMSHAFT SPROCKET
INSTALLATION

1. Use the following special tool as during removal to

hold the camshaft sprocket.

• Front hub and flange yoke holder (MB990767)

• Pin (MD998719)

2. Tighten the camshaft sprocket mounting bolt to

the specified torque.

Tightening torque: 89

± 9 N⋅m

>>I<< CAMSHAFT POSITION SENSOR
SUPPORT INSTALLATION

1. Remove sealant from the camshaft position

sensor support and cylinder head surfaces.

2. Apply the sealant to the camshaft position sensor

support flange in a continuous bead as shown in
the illustration.

Specified sealant: MITSUBISHI GENUINE
PART MD970389 or equivalent

NOTE: Install the camshaft position sensor
support within 15 minutes after applying the
sealant.

3. Install the camshaft position sensor support to the

cylinder head.

CAUTION

Wait at least one hour. Never start the engine or
let engine oil or coolant touch the adhesion
surface during that time.
4. Tighten the camshaft position sensor support

mounting bolts to the specified torque.

Tightening torque: 14

± 1 N⋅m

>>J<< O-RING/OIL CONTROL VALVE
INSTALLATION

CAUTION

• Never re-use the O-ring.

•

Before installing O-ring, wind the tape with the

soft adhesion (sealing tape) around the oil
passages cut-out area of engine oil control
valve to prevent the damage. If the O-ring is
damaged, it can be the cause of oil leak.

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

and then install it to the oil control valve.

2. Assemble the oil control valve to the cylinder

head.

3. Tighten the oil control valve mounting bolt to the

specified torque.

Tightening torque: 11

± 1 N⋅m

>>K<< ENGINE COVER INSTALLATION

1. Engage the engine cover claws in the engine

cover bracket.

AC102532 AB

MB990767

MD998719

AC301268AB

φ 3 mm

AK303651AD

Tape

AC302273

Claw point

Content .. 633 634 635 636 ..