Mitsubishi Lancer (4A9 engine). Manual - part 34

Removal steps 

1.

Earth cable connection

<<

A

>>

•

A/C compressor and clutch 
assembly.

<<

B

>>

•

Engine and transmission assembly 
supporting

•

Engine mounting bracket (Refer to 
GROUP 32 

− Engine Mounting )

2.

Alternator brace

>>

E

<<

3.

Crankshaft front oil seal

>>

D

<<

4.

Water pump assembly

>>

D

<<

5.

O-ring

>>

C

<<

6.

Timing chain case assembly

>>

C

<<

7.

O-ring

>>

B

<<

8.

Timing chain tensioner cover

<<

C

>>

>>

A

<<

9.

Timing chain tensioner

>>

A

<<

10. Tensioner lever assembly

>>

A

<<

11. Timing chain guide

>>

A

<<

12. Timing chain

TIMING CHAIN

ENGINE MECHANICAL <4A9>

11A-50

REMOVAL SERVICE POINTS

<<A>> A/C COMPRESSOR AND CLUTCH 
ASSEMBLY REMOVAL
1. Remove the A/C compressor and clutch assembly 

together with the hose from the bracket.

2. Tie the removed A/C compressor and clutch 

assembly with a string at a position where it will 
not interfere with the removal and installation of 
timing chain case assembly.

<<B>> ENGINE AND TRANSMISSION ASSEMBLY 
HOLDING
Install a special tool for holding the engine and trans-
mission assembly.
1. <When special tool engine hanger (MB991928) is 

used>
(1) Assemble special tool engine hanger 

(MB991928) (Set the following parts on the 
base hanger).

• Slide bracket (HI)

• Foot x 4 (standard) (MB991932)

•

AC611565AC

MB991932

MB991932

MB991930

Joint x 2 (90) (MB991930)

(2) Set the foot of the special tool as shown in the 

figure.

NOTE: Slide the slide bracket (HI) to adjust the 
engine hanger balance.

AC700024AB

MB991454

MB991928

MB991527

(3)  Install special tool engine hanger (MB991527) 

and special tool engine hanger balancer 
(MB991454) to the engine hanger, and set it to 
special tool MB991928 to support the engine 
and transmission assembly.

2. <When special tool engine hanger (MB991895) is 

used>

AC611564AC

MB991895

(1) Set the foot of special tool engine hanger 

(MB991895) as shown in the figure.

NOTE: Slide the foot to adjust the engine 
hanger balance.

AC700023AB

MB991454

MB991895

MB991527

(2)  Install special tool engine hanger (MB991527) 

and special tool engine hanger balancer 
(MB991454) to the engine hanger, and set it to 
special tool MB991895 to support the engine 
and transmission assembly.

TIMING CHAIN

ENGINE MECHANICAL <4A9>

11A-51

<<C>> TIMING CHAIN TENSIONER REMOVAL

AC312116

AC

MB992000

Crankshaft pulley centre
bolt and washer

Crankshaft

Dowel pin

Groove

1. Set special tool crankshaft adapter (MB992000) to 

the crankshaft, and install the crankshaft pulley 
centre bolt and washer.

CAUTION

Never turn the crankshaft anti-clockwise.

ACA00277

AC

Timing mark

Timing mark
(Groove)

V.V.T. sprocket assembly

Timing mark
(Groove)

ACA00277

Camshaft sprocket

AC609338AB

Crankshaft sprocket

Timing mark
(Slot portion)

Timing mark
(Cylinder block
 protrusion)

2. Turn the crankshaft clockwise, and align the 

timing mark of the camshaft sprocket and that of 
the V.V.T. sprocket assembly (the groove of V.V.T. 
sprocket assembly side face). Then set No.1 
cylinder to the TDC.

AC701343AB

Timing chain

Hexagon part of 
the inlet camshaft

Exhaust camshaft

3. While holding the inlet camshaft hexagonal area 

with a wrench or a similar tool, slightly turn the 
exhaust camshaft clockwise to tighten the timing 
chain at the timing chain tensioner side and 
shorten the plunger of the timing chain tensioner.

AC312118AB

Timing chain tensioner

Pin

4. With the plunger of the tensioner shortened, insert 

a pin (3 mm or less in diameter) or a similar tool to 
the hole shown in the illustration of the timing 
chain tensioner.

CAUTION

Do not turn the crankshaft after removing the tim-
ing chain tensioner.
5. Remove the timing chain tensioner.

TIMING CHAIN

ENGINE MECHANICAL <4A9>

11A-52

INSTALLATION SERVICE POINTS

>>A<< TIMING CHAIN/TIMING CHAIN GUIDE/
TENSIONER LEVER ASSEMBLY/TIMING CHAIN 
TENSIONER INSTALLATION

AC312116

AC

MB992000

Crankshaft pulley centre
bolt and washer

Crankshaft

Dowel pin

Groove

1. Set special tool crankshaft adapter (MB992000) to 

the crankshaft, and install the crankshaft pulley 
centre bolt and washer.

CAUTION

Never turn the crankshaft anti-clockwise.

ACA00819

AB

Timing mark

Timing mark
(Groove)

V.V.T. sprocket assembly

Timing mark
(Groove)

Camshaft sprocket

AC701191

AB

Crankshaft sprocket

Timing mark
(Slot portion)

Timing mark
(Cylinder block
 protrusion)

2. Turn the camshaft and crankshaft clockwise, and 

align the timing marks of the camshaft sprocket, 
the V.V.T. sprocket assembly (the groove of V.V.T. 
sprocket assembly side face) and the crankshaft 
sprocket. Then set No.1 cylinder to the top dead 
centre of compression.

ACA00821

ACA0

AB

Marked link plate (Blue)

Timing mark
(Groove)

Camshaft sprocket

V.V.T. sprocket 
assembly

Timing mark

Timing mark
(Groove)

AC312122

AB

Marked link
plate
(Blue)

Timing mark
(Slot portion)

Crankshaft sprocket

3. Locate the marked link plate (blue-coloured area) 

of the timing chain as shown in the illustration of 
each sprocket, and install the timing chain.

AC312123AB

Timing chain tensioner

Cam

Plunger

AC613339AB

Timing chain tensioner

Pin

Plunger

TIMING CHAIN

ENGINE MECHANICAL <4A9>

11A-53

4. Install the timing chain guide, the tensioner lever 

assembly, and the timing chain tensioner.
NOTE: When the plunger of the timing chain ten-
sioner is stretched, remove the pin or the similar 
tool. While pressing the cam in the lower area of 
the timing chain tensioner, press and shorten the 
plunger to keep the status with the pin or the simi-
lar tool.

5. After installing the timing chain tensioner, confirm 

that the timing marks of each sprocket are aligned 
with the cylinder No. 1 to the top dead centre of 
compression, and the marked link plate (blue-
coloured area) of the timing chain is aligned with 
the specified position of each sprocket. Then pull 
out the pin or a similar tool of the timing chain 
tensioner, and apply tension to the timing chain.

6. Remove special tool MB992000.

>>B<< TIMING CHAIN TENSIONER COVER 
INSTALLATION
1. Remove the sealant from the installation face of 

the timing chain tensioner cover and the timing 
chain case assembly, and degrease the surface 
where the sealant is applied.

CAUTION

After the installation, until a sufficient period of 
time (one hour or more) elapses, do not apply the 
engine oil or water to the sealant application area 
or start the engine.

AC311269

3 mm

Timing chain case
assembly

AC

 

2 mm

2. Apply a bead of the specified sealant to the 

mating surface of the timing chain case assembly. 
Then, install the timing chain tensioner cover to 
the timing chain case assembly.

Specified sealant: ThreBond 1217G or equiv-
alent

NOTE: Install the timing chain tensioner cover 
immediately after applying sealant.

>>C<< O-RING/TIMING CHAIN CASE ASSEMBLY 
INSTALLATION
1. Remove the sealant from the timing chain case 

assembly and the installation face of the timing 
chain case assembly on the cylinder block and 
the cylinder head, and degrease the surface 
where the sealant is applied.

AC312124AB

Timing chain
case assembly

O-ring

O-ring

Groove

Section A - A

A

A

2. Securely fit the O-ring in the groove of timing 

chain case assembly without causing any torsion 
and damage.