Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual - part 65

CYLINDER HEAD AND VALVES

TSB Revision

ENGINE OVERHAUL <3.0L ENGINE>

11D-31

C YLIN D ER  H EA D  A N D  VA LVES

REMOVAL AND INSTALLATION

M1113006900044

Required Special Tools:
MD998051: Cylinder Head Bolt Wrench

MD998772: Valve Spring Compressor
MD998774: Valve Stem Seal Installer

AKX00644

108 ± 5 N·m
80 ± 4 ft-lb
     

↓

Back off
     

↓

108 ± 5 N·m
80 ± 4 ft-lb

1

5

2

6

7

13

3

14

9

11

16

17

19

12

15

10

21

18

22

20

8

4

N

N

N

N

N

N

N

N

AB

APPLY ENGINE OIL
TO ALL MOVING
PARTS BEFORE
INSTALLTION.

REMOVAL STEPS

<<A>>

>>D<<

1. CYLINDER HEAD BOLT

>>D<<

2. WASHER
3 CYLINDER HEAD ASSEMBLY
4. CYLINDER HEAD GASKET

<<B>>

>>C<<

5. RETAINER LOCK
6. VALVE SPRING RETAINER

>>B<<

7. VALVE SPRING
8. INLET VALVE

<<B>>

>>C<<

9. RETAINER LOCK
10.VALVE SPRING RETAINER

>>B<<

11. VALVE SPRING

12.EXHAUST VALVE

>>A<<

13.VALVE STEM SEAL
14.VALVE SPRING SEAT

>>A<<

15.VALVE STEM SEAL
16.VALVE SPRING SEAT
17.INLET VALVE GUIDE
18.SNAP RING
19.EXHAUST VALVE GUIDE
20.INLET VALVE SEAT
21.EXHAUST VALVE SEAT
22.CYLINDER HEAD

REMOVAL STEPS (Continued)

CYLINDER HEAD AND VALVES

TSB Revision

ENGINE OVERHAUL <3.0L ENGINE>

11D-32

REMOVAL SERVICE POINTS

<<A>> CYLINDER HEAD BOLT REMOVAL
Using special tool MD998051, loosen the cylinder head bolts. 
Loosen each bolt evenly, little by little, by two or three steps.

<<B>> RETAINER LOCK REMOVAL
1. Set special tool MD998772 as illustrated to compress the 

valve spring. Remove the retainer locks.

2. Relieve the spring tension and remove the valve, retainer, 

spring, etc.
Store removed valves, springs and other parts, tagged to 
indicate their cylinder number and location for assembly.

INSTALLATION SERVICE POINTS

>>A<< VALVE STEM SEAL INSTALLATION
1. Install the valve spring seat.

CAUTION

The valve stem seal for the exhaust side is different than 
the intake side. They are identified by their respective 
rubber colors. When installing, do not confuse them.

CAUTION

The special tool must be used to install the valve stem 
seal. Improper installation could result in oil leaking past 
the valve guide.
2. Using special tool MD998774, install a new stem seal to the 

valve guide.

AKX00616

MD998051

AB

AKX00617

MD998772

AB

AKX00642

EXHAUST

RUBBER COLOR:
GRAY

RUBBER COLOR:
GRAY GREEN

INTAKE

AB

AKX00618AB

MD998774

CYLINDER HEAD AND VALVES

TSB Revision

ENGINE OVERHAUL <3.0L ENGINE>

11D-33

>>B<< VALVE SPRING INSTALLATION
Install the valve spring with its ID color painted end (larger pitch 
side) upward (toward the valve spring retainer).

>>C<< RETAINER LOCK INSTALLATION

CAUTION

Do not compress the valve spring excessively. It can 
damage the stem seal.
1. Set special tool MD998772 as illustrated to compress the 

valve spring. Install the retainer locks.

2. Relieve the spring tension and check that the retainer locks 

are seated correctly.

>>D<< CYLINDER HEAD BOLT INSTALLATION
1. Insert the cylinder head bolt with a washer attached into the 

bolt hole in the cylinder head. The washer must be set with 
the "rounded shoulder" side upward.

AKX00718

SPRING SEAT

SPRING 
RETAINER

IDENTIFI-
CATION 
COLOR

STEM SEAL

AB

AKX00617

MD998772

AB

AKX00657

CYLINDER HEAD BOLT

ROUNDED
SHOULDER

WASHER

CYLINDER
HEAD

AB

CYLINDER HEAD AND VALVES

TSB Revision

ENGINE OVERHAUL <3.0L ENGINE>

11D-34

2. Tighten the cylinder head bolts to the specified torque in the 

sequence shown.

Tightening torque: 108 

±

 5 N

⋅

m (80 

±

 4 ft-lb)

3. Loosen all bolts fully.

4. Retighten the cylinder head bolts to the specified torque in 

the sequence shown.

Tightening torque: 108 

±

 5 N

⋅

m (80 

±

 4 ft-lb)

INSPECTION

M1113007000044

CYLINDER HEAD
1. Check the cylinder head gasket surface for flatness by using 

a straightedge and feeler gauge in the directions of A 
through G shown in the illustration.

Standard value: 0.03 mm (0.0012 inch)
Limit: 0.2 mm (0.007 inch)

2. If it exceeds the limit, correct to meet the specification.

Grinding limit: *0.2 mm (0.007 inch)
*Includes combined with cylinder block grinding.

Cylinder head height (specification when new): 

120 mm (4.7 inches)

VALVE
1. Check the valve seat contact. The 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 (0.04 inch) 
<Exhaust> 1.2 mm (0.05 inch)

Minimum limit:

<Intake> 0.5 mm (0.02 inch)
<Exhaust> 0.7 mm (0.03 inch)

AKX00673

MD998051

TIMING BELT SIDE

AB

AKX00733

AKX00619

MARGIN

VALVE SEAT 
CONTACT

AB