1999 MITSUBISHI LANCER EVOLUTION VI engine oil

ENGINE – Cylinder Head and Valves11-45
(3) How to Neutralize Sodium
Place a container filled with more than 10 liters of water
in a well ventilated large space.
Wear rubber gloves and goggles, and carefully take out
broken valves from the cylinder head.
Put a broken valve in the water-filled container and quickly
get away from the container at least 2 or 3 m.
Caution
1. Valves must be neutralized one at a time.
2. Put a valve in the container only after soduim
in the preceding one has completely reacted with
water.
Keep fire away from the container during the
neutralization. The resulting hydrogen gas is highly
explosive.
When the reaction has finished (there is no more
generation of hydrogen gas), take the valves out of the
container with large tweezers or the like.
NOTE
The reaction occurs when water enters the cavity in the
valve. Hydrogen gas may be trapped inside the valve,
temporarily blocking the water passage. In such a case,
wait until hydrogen gas in released and remaining soduim
reacts with water.
After the neutralization of soduim, water in the container
contains soduim hydroxide and is highly alkaline. The
water solution should be disposed of according to local
regulations.
Caution
1. Do not let the solution contact the eyes or the
skin.
2. Should it get in the eyes, immediately flush them
with clean water thoroughly, and receive medical
attention. When it contacts the skin, wash with
ample amounts of clean water.
INSTALLATION SERVICE POINTS
AVALVE STEM SEAL INSTALLATION
(1) Install the valve spring seat.
(2) The special tool must be used to install the valve stem
seal. Improper installation could result in oil leaks past
the valve guide.
Caution
Do not reuse removed valve stem seals.
MD998737

ENGINE – Cylinder Head and Valves11-46
BVALVE SPRING INSTALLATION
Direct the valve spring end with identification color toward
the spring retainer.
CRETAINER LOCK INSTALLATION
The valve spring, if excessively compressed, causes the
bottom end of the retainer to be in contact with, and damage,
the stem seal.
DCYLINDER HEAD BOLT INSTALLATION
(1) When installing the cylinder head bolts, check that the
shank length of each bolt meets the limit. If the limit is
exceeded, replace the bolt.
Limit: Max. 99.4 mm
(2) Apply engine oil to the bolt threads and to the washers.
(3) Using the special tool (MB991654) and according to the
tightening sequence, tighten the bolts to the specified
torque.
Tightening torque: 78 Nm
(4) Loosen all bolts fully.
(5) Retighten the loosened bolts to a torque of 20 Nm in
the specified tightening sequence.
MD998772
MD998735
6EN0782
Shank length
Timing belt side

ENGINE – Front Case, Counterbalance Shaft and Oil Pan11-51
FRONT CASE, COUNTERBALANCE SHAFT AND OIL PAN
REMOVAL AND INSTALLATION
16 Nm 10 Nm
39 Nm22 Nm
Apply engine oil to all
moving parts before
installation.
12
34 567 8
9
10 11 12 13 1415
161718 1920
21
22
23 24 25
2627 2829
30
36 Nm
24 Nm 24 Nm19 Nm
44 Nm 18 Nm24 Nm
54 Nm10 Nm
19 Nm
7 Nm
31
Removal steps
1. Drain plug
N2. Drain plug gasket
M3. Oil filter
AL4. Oil pan
5. Oil screen
6. Oil screen gasket
7. Buffle plate
I8. Oil pressure switch
9. Oil cooler by-pass valve
10. Relief plug
11. Relief plug gasket
12. Relief spring
13. Relief plunger
14. Oil filter bracket
15. Oil filter bracket gasket
BK16. Plug
17. O-ringCJ18. Flange bolt
H19. Front case
20. Front case gasket
21. Oil pump cover
G22. Oil pump driven gear
G23. Oil pump drive gear
F24. Crankshaft oil seal
E25. Oil pump oil seal
D26. Counterbalance shaft oil seal
27. Counterbalance shaft left
28. Counterbalance shaft right
DC29. Counterbalance shaft front bearing
EB30. Counterbalance shaft rear bearing
left
EA31. Counterbalance shaft rear bearing
right

ENGINE – Front Case, Counterbalance Shaft and Oil Pan11-52
REMOVAL SERVICE POINTS
AOIL PAN REMOVAL
(1) Remove all oil pan bolts.
(2) Drive in the special tool between the cylinder block and
oil pan.
NOTE
Never use a screwdriver or chisel, instead of the service
tool, as a deformed oil pan flange will result in oil leakage.
BPLUG REMOVAL
(1) Fit special tool MD998162 on the plug, and then hold
it in position with special tool MD998783.
(2) Loosen the plug.
(3) Remove the special tools MD998783 and MD998162 and
then the plug.
CFLANGE BOLT REMOVAL
(1) Remove the plug on the side of cylinder block.
(2) Insert a Phillips screwdriver (shank diameter 8 mm) into
the plug hole to lock the counterbalance shaft.
(3) Loosen the flange bolt.
DCOUNTERBALANCE SHAFT FRONT BEARING
REMOVAL
Using the special tool, remove the counterbalance shaft front
bearing from the cylinder block.
NOTE
Be sure to remove the front bearing first.
If it has not been removed, the Rear Bearing Puller cannot
be used.
6EN0698
MD998727
MD998162
MD998783
6EN1026
Plug
Screwdriver
6EN0565

ENGINE – Front Case, Counterbalance Shaft and Oil Pan11-53
ECOUNTERBALANCE SHAFT REAR BEARING
REMOVAL
Using the special tool, remove the left counterbalance shaft
rear bearing from the cylinder block.
NOTE
When removing the left counterbalance shaft rear bearing,
install the special tool (MB991603) in front of the cylinder
block.
INSTALLATION SERVICE POINTS
ARIGHT COUNTERBALANCE SHAFT REAR
BEARING INSTALLATION
(1) Apply engine oil to the outer surface of bearing.
(2) Using special tools, install right rear bearing. Make sure
that oil hole of bearing is aligned with oil hole of cylinder
block.
BLEFT COUNTERBALANCE SHAFT REAR
BEARING INSTALLATION
(1) Install the special tool (Guide Plate) to the cylinder block.
(2) Apply engine oil to the rear bearing outer circumference
and bearing hole in the cylinder block.
(3) Using the special tool, install the rear bearing.
NOTE
The left rear bearing has no oil holes.
MB991603
6EN1034
MD998705
MB991603
6EN0557
MB991603Rear bearing
MD998705

ENGINE – Front Case, Counterbalance Shaft and Oil Pan11-54
CCOUNTERBALANCE SHAFT FRONT BEARING
INSTALLATION
Using special tools, install front bearing.
DCOUNTERBALANCE SHAFT OIL SEAL
INSTALLATION
Using a suitable socket wrench, install the counterbalance
shaft oil seal into the front case.
EOIL PUMP OIL SEAL INSTALLATION
Using a suitable socket wrench, install the oil pump oil seal
into the front case.
FCRANKSHAFT FRONT OIL SEAL INSTALLATION
Using the special tool, install the crankshaft front oil seal
into the front case.
6EN1035
MD998705
MD998705
Bearing
Cylinder block

ENGINE – Front Case, Counterbalance Shaft and Oil Pan11-55
GOIL PUMP DRIVEN GEAR / OIL PUMP DRIVE
GEAR INSTALLATION
Apply engine oil amply to the gears and line up the alignment
marks.
HFRONT CASE ASSEMBLY INSTALLATION
(1) Set the special tool on the front end of crankshaft and
apply a thin coat of engine oil to the outer circumference
of the special tool to install the front case.
(2) Install the front case assembly through a new front case
gasket and temporarily tighten the flange bolts (other
than those for tightening the filter bracket).
ISEALANT APPLICATION TO OIL PRESSURE
SWITCH
Coat the threads of switch with sealant and install the switch
using the special tool.
Specified sealant: 3M
TM AAD Part No. 8672 or equivalent
Caution
(1) Keep the end of the thread portion clear or sealant.
(2) Avoid an overtightening.
JFLANGE BOLT INSTALLATION
(1) Insert a Phillips screwdriver into a hole in the left side
of the cylinder block to lock the silent shaft.
6EN0564

ENGINE – Front Case, Counterbalance Shaft and Oil Pan11-56
(2) Secure the oil pump driven gear onto the left
counterbalance shaft by tightening the flange bolt to
specified torque.
KPLUG INSTALLATION
(1) Install a new O-ring to the groove of the front case.
(2) Install the plug to the front case.
(3) Fit the special tool MD998162 on the plug, and then
hold it in position with special tool MD998783.
(4) Tighten the plug to the specified torque.
(5) Remove the special tools MD998783 and MD998162.
LOIL PAN INSTALLATION
(1) Clean both mating surfaces of oil pan and cylinder block.
(2) Apply a 4 mm wide bead of sealant to the entire
circumference of the oil pan flange.
Specified sealant:
Mitsubishi Genuine Part No. MD970389 or
equivalent
NOTE
1. Be sure to install the oil pan quickly while the sealant
is wet (within 15 minutes).
2. After installation, keep the sealed area away from
the oil and coolant for approx. one hour.
(3) Note the difference in bolt lengths at the location shown.
MD998162
MD998783
6EN0213
Bolt hole
portionGroove
portion