Mitsubishi Lancer Evolution IX. Manual - part 90

OIL PAN AND OIL PUMP

ENGINE OVERHAUL

11B-51

CAUTION

Remove the front bearing first. Otherwise, the 
special tool cannot be used.
Use the special tool Silent shaft bearing puller 
(MD998371) to remove the counterbalancer shaft 
front bearing from the cylinder block.

<<F>> COUNTERBALANCER SHAFT 
REAR BEARING REMOVAL

1. Use the special tool Silent shaft bearing puller 

(MD998372) to remove the counterbalancer shaft 
rear bearings from the cylinder block.

2. When removing the rear bearing of the left 

counterbalancer shaft, install the special tool 
Silent shaft bearing installer stopper (MB991603) 
on the front of the cylinder block and use a special 
tool Silent shaft bearing puller (MD998372) to pull 
out the bearing.

INSTALLATION SERVICE POINTS
>>A<< COUNTERBALANCER SHAFT 
REAR BEARING, LEFT INSTALLATION

1. Install the special tool Silent shaft bearing installer 

stopper (MB991603) on the cylinder block.

2. Set the rear bearing on the special tool Silent 

shaft bearing installer (MD998705).
NOTE: The left counterbalancer shaft rear bearing 
has no oil hole.

3. Force the rear bearing into the cylinder block by 

sticking the special tool.

>>B<< COUNTERBALANCER SHAFT 
REAR BEARING, RIGHT INSTALLATION

1. Install the guide pin of the special tool Silent shaft 

bearing installer (MD998705) on the cylinder 
block.

2. Set the bearing on the special tool with its oil hole 

on the ratchet ball.

AK202634

MB991603

MD998372

AC

AK202548

MB991603

MD998705
(Stopper)

AC

AK300619AF

MB991603

MD998705
(Stopper)

Rear bearing

AK304433

MD998705
(Guide pin)

AB

AK300620AE

Ratchet ball

Front bearing right

Oil hole

OIL PAN AND OIL PUMP

ENGINE OVERHAUL

11B-52

3. Insert the special tool while passing the guide pin 

through its hole and force the bearing into position 
by striking the tool.

>>C<< COUNTERBALANCER SHAFT 
FRONT BEARING INSTALLATION

1. Detach from the special tool Silent shaft bearing 

installer (MD998705) its element for rear bearing 
installation.

2. Install the guide pin of the special tool on the 

cylinder block.

3. Set the bearing on the special tool with its oil hole 

on the ratchet ball.

4. Insert the special tool Silent shaft bearing installer 

(MD998705) into the cylinder block while passing 
the guide pin through its hole and force the 
bearing into position by striking the tool.

AK304434AC

MD998705
(Guide pin)

MD998705
(Stopper)

AK300622AF

MD998705
(Stopper)

AK300623AD

Rear bearing
installing portion

MD998705 (Stopper)

AK304433

MD998705
(Guide pin)

AB

AK300621AE

Ratchet ball

Rear bearing right

Oil hole

AK304434AC

MD998705
(Guide pin)

MD998705
(Stopper)

AK300624

OIL PAN AND OIL PUMP

ENGINE OVERHAUL

11B-53

>>D<< OIL PUMP OIL SEAL 
INSTALLATION

Use an appropriate socket wrench to install the oil 
pump oil seal.

>>E<< COUNTERBALANCER SHAFT OIL 
SEAL INSTALLATION

Use an appropriate socket wrench to install the coun-
terbalancer shaft oil seal.

>>F<< CRANKSHAFT OIL SEAL 
INSTALLATION

Use the special tool Crankshaft front oil seal installer 
(MD998375) to install the crankshaft oil seal.

>>G<< OIL PUMP DRIVEN GEAR/OIL 
PUMP DRIVE GEAR INSTALLATION

Apply engine oil generously to the gears and line up 
the alignment marks.

>>H<< FRONT CASE INSTALLATION

1. Install the special tool crankshaft front oil seal 

guide (MD998285) on the front end of crankshaft 
and apply a thin coat of engine oil to the outer 
surface of the special tool. Be sure to use the 
special tool when the front case is fitted with an oil 
seal.

2. Install the front case on the cylinder block with a 

new front case gasket in between and temporarily 
tighten all the flange bolts except those that are 
used for tightening the filter bracket.

3. Install the oil filter bracket on the front case with 

the oil filter bracket gasket in between and 
temporarily tighten the washer-assembled bolts.

4. Tighten all the bolts to the specified torques.

AK301070AE

Oil seal

Socket wrench

Front case

AK301071AE

Oil seal

Socket wrench

Front case

AK301072AE

MD998375

Oil seal

Front case

AK202660

Alignment 
marks

AB

AK202577

MD998285

Counterbalancer 
shaft, right

AC

Counterbalancer 
shaft, left

AK202656

MD998285

AC

OIL PAN AND OIL PUMP

ENGINE OVERHAUL

11B-54

>>I<< FLANGE BOLT INSTALLATION

1. Insert a correspond screwdriver (shank diameter 

8 mm) into the hole in the left side of the cylinder 
block to prevent the counterbalancer shaft from 
rotating.

2. Tighten the flange bolts.

>>J<< PLUG INSTALLATION

1. Install a new O-ring on the front case.

2. Use the special tool to tighten the plug to the 

specified torque.

• Plug wrench (MD998162)

• Plug wrench retainer (MD998783)

>>K<< OIL PRESSURE SWITCH 
INSTALLATION

CAUTION

Be careful not to block the oil passage with seal-
ant.
1. Apply sealant to the threaded portion.

Specified Sealant:

3M ATD Part No.8660 or equivalent

2. Tighten the oil pressure switch together with the 

cylinder block by the specified torque using of the 
special tool Oil pressure switch socket wrench 
(MD998012).

Tightening torque: 19 

± 3 N⋅m

>>L<< OIL PAN INSTALLATION 

CAUTION

Do not apply FIPG over remaining old FIPG. 
Doing so could result in oil leakage.
1. Thoroughly remove old FIPG from the gasket 

surfaces of the cylinder block and oil pan.

AK202641

Crosspoint 
screwdriver

AC

AK304385

AK202585

MD998162

MD998783

AC

AK300616AB

AK300617AC

MD998012