Mitsubishi Outlander GS45X. Manual - part 1245

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <2.4L ENGINE>

11B-55

VALVE GUIDE

Measure clearance between the valve guide and valve stem. If 
the clearance exceeds the limit, replace the valve guide or 
valve, or both.

Standard value:

Intake 0.020 

− 0.047 mm (0.0008 − 0.0019 inch)

Exhaust 0.030 

− 0.054 mm (0.0012 − 0.0021 inch)

Limit:

Intake 0.10 mm (0.0039 inch)
Exhaust 0.11 mm (0.0043 inch)

.

VALVE SEAT

Assemble the valve, then measure the contact width. If the 
measurement exceeds the specified limit, replace the valve 
seat.

Standard value

Intake: 1.16 

− 1.46 mm (0.046 − 0.058 inch)

Exhaust: 1.35 

− 1.65 mm (0.053 − 0.065 inch)

CAUTION

If the variation in the width exceeds 0.2 mm even if the 
contact width is within the standard value, replace or cor-
rect the valve sheet.

REPAIR PROCEDURE OF VALVE SEAT

1. Check clearance between valve guide and valve and 

replace the valve guide if necessary before repairing the 
valve seat.

2. Repair the valve seat so that seat width and seat angle are 

to the specified shape.

3. Lap valve and valve seat with lapping compound after 

repairing valve seat.

AK300168

Guide inside diameter

Stem diameter

Valve 
guide

AF

AK601281AD

Contact width

Valve seat

AK503333AE

30˚

60˚

30˚

1.16 – 1.46 mm
(0.046 – 0.058 in)

45˚

45˚

1.35 – 1.65 mm
(0.053 – 0.065 in)

CYLINDER HEAD AND VALVES

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ENGINE OVERHAUL <2.4L ENGINE>

11B-56

REPLACEMENT PROCEDURE OF VALVE SEAT

1. Scrape the valve seat to be replaced from inside to make its 

wall thickness thin before pulling out.

2. Repair the valve seat hole of the cylinder head to match it 

with the diameter of the oversize valve seat to be press 
fitted.

Intake valve seat bore diameter:

0.3 Over size: 36.22 

− 36.24 mm (1.426 − 1.427 inch)

Exhaust valve seat bore diameter:

0.3 Over size: 30.22 

− 30.24 mm (1.190 − 1.191 inch)

3. Press fit the valve seat, taking care not to score the cylinder 

head bore at room temperature.

4. Ream the valve seat.

Refer to "Repair procedure of valve seat."

REPLACEMENT PROCEDURE OF VALVE GUIDE

1. Pull out the valve guide with a press toward the cylinder 

block side.

2. Ream the valve guide hole of the cylinder head to match it 

with the diameter of the oversize valve guide to be press 
fitted.

CAUTION

Do not use a valve guide with the same size as that of the 
pulled out valve guide because it cannot be press fitted.

Valve guide bore diameter

0.25 Over size: 11.23 

− 11.25 mm (0.442 − 0.443 inch)

3. Press fit the valve guide to the illustrated dimension.

Standard value: 14.6 

− 15.2 mm (0.57 − 0.60 inch)

NOTE: Press fit the valve guide from the cylinder head top 
surface.

4. After pressing fit the valve guide, insert a new valve to check 

for sliding.

AK300719AE

Cut

0.5 – 1 mm
(0.02 – 0.04 in)

0.5 – 1 mm
(0.02 – 0.04 in)

AK300720AE

Oversize hole
diameter

Valve seat
height

AK503086AD

14.6 – 15.2 mm
(0.57 – 0.60 in)

BALANCER CHAIN

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ENGINE OVERHAUL <2.4L ENGINE>

11B-57

BALANCER CHAIN

REMOVAL AND INSTALLATION

M1113032200347

AK603009

1

2

3

5

6

8

7

4

28 ± 2 N·m
21 ± 1 ft-lb

AH

9

10

11

40 N·m 

→ 130 N·m

30 ft-lb      96 ft-lb

Apply engine oil to
all moving parts
before installation.

10 ± 2 N·m
89 ± 17 in-lb

20 N·m 

→ 44 N·m → 0 N·m → 20 N·m → +135˚

15 ft-lb      32 ft-lb     0 ft-lb      15 ft-lb

10 ± 2 N·m
89 ± 17 in-lb

10 ± 2 N·m
89 ± 17 in-lb

Removal steps 

<<A>> >>E<<

1. Drive plate bolt
2. Adapter plate
3. Drive plate

>>D<<

4. Rear oil seal

<<B>> >>C<<

5. Balancer shaft chain tensioner
6. Balancer shaft tensioner lever

7. Balancer shaft chain guide

<<B>> >>B<<

8. Balancer shaft module

<<B>> >>B<<

9. Balancer chain

<<B>> >>B<<

10.Crankshaft sprocket

<<C>> >>A<<

11. Ladder frame

Removal steps (Continued)

BALANCER CHAIN

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ENGINE OVERHAUL <2.4L ENGINE>

11B-58

Required Special Tool:

• MB991883: Flywheel stopper

• MB991614: Angle gauge

• MD998718: Rear oil seal installer

REMOVAL SERVICE POINTS

.

<<A>> DRIVE PLATE BOLT REMOVAL

1. Use special tool MB991883 to secure the drive plate.
2. Remove the drive plate bolts.

.

<<B>> BALANCER SHAFT CHAIN TENSIONER / 
CRANKSHAFT SPROCKET / BALANCER CHAIN / 
BALANCER SHAFT MODULE REMOVAL

CAUTION

Reliably secure the plunger of the chain tensioner with 
hard wire to prevent it from jumping out of the main body.
1. Push in the balancer shaft tensioner lever by hand and push 

in the plunger of the chain tensioner until it contacts the 
bottom. Then, insert hard wire (piano wire, etc.) of 

φ1.5 or 

hexagonal bar wrench (1.5 mm [0.06 inch]) into the plunger 
fixing hole to secure.

2. Remove the balancer shaft chain tensioner.

CAUTION

The balancer shaft module must not be disassembled 
because of assembly warranty.
3. Remove the crankshaft sprocket, balancer chain and 

balancer shaft module as a unit.

.

AK502869AD

MB991883

AK502940

AK502754