length MITSUBISHI LANCER EVOLUTION 2007 Service User Guide

ENGINE OVERHAUL -Cylinder Head and Valve11B-44
2. VALVE
(1) If there is a faulty contact, one - sided contact or
improper seating with the valve seat, correct the valve
seat.
(2) Replace the valve if the margin exceeds the limit
value.
Standard value:
Intake 1.0 mm
Exhaust 1.5 mm
Limit value:
Intake 0.5 mm
Exhaust 1.0 mm
(3) Measure the total length of the valve, and replace
the valve if the length exceeds the limit value.
Standard value:
Intake 109.50 mm
Exhaust 109.70 mm
Limit value:
Intake 109.00 mm
Exhaust 109.20 mm
3. VALVE SPRING
(1) Measure the free height of the spring, and replace
the valve spring if the height exceeds the limit value.
Standard value: 48.3 mm
Limit value: 47.3 mm
(2) Measure the spring squareness, and replace the valve
spring if the inclination exceeds the limit value.
Standard value: 1.5_or less
Limit value: 4_
4. VALVE GUIDE
Measure the clearance between the valve guide and valve
stem. If the clearance exceeds the limit value, replace
the valve guide, valve or both parts.
Standard value:
Intake 0.02 - 0.05 mm
Exhaust 0.05 - 0.09 mm
Limit value:
Intake 0.10 mm
Exhaust 0.15 mm
Contact
(Must be at
centre of face)
Margin
Total valve length
Squareness
Free height
Valve
guide
Stem outer
diameter Guide inner
diameter

ENGINE OVERHAUL -Cylinder Head and Valve11B-46
Valve Guide Replacement
1. Using a press, push the valve guide to the cylinder block
side.
2. Machine the valve guide hole on the cylinder head to
match the oversized valve guide into which it is to be
pressed in.
Caution
Do not use a valve guide having the same size as
the removed valve guide.
Valve guide hole diameter:
0.05 O.S. 12.05 - 12.07 mm
0.25 O.S. 12.25 - 12.27 mm
0.50 O.S. 12.50 - 12.52 mm
3. Press in the valve guide to the dimensions shown in
the illustration.
NOTE
(1) Press in the valve guide from the top of the cylinder
head.
(2) Note that the length of the valve guides differs.
Intake 45.5 mm
Exhaust 50.5 mm
4. After pressing in the valve guide, insert a new valve,
and confirm the sliding state.
19.2 - 19.8 mm

ENGINE OVERHAUL -Oil Pump and Oil Pan11B-53
"JAPLUG CAP INSTALLATION
1. Install a new O-ring onto the oil pump case.
2. Lightly tighten the plug cap by hand.
3. As shown in the illustration, fit the special tool (MD998162)
into the notch on the plug cap, and while supporting with
the special tool (MD998783), tighten the plug cap at the
specified torque 23±3N•m.
"KAOIL PRESSURE SWITCH INSTALLATION
Sealant
Specified sealant:
3M
TMAAD Part No. 8672 or equivalent
Caution
(1) Make sure that the sealant does not protrude to the
end of the threads.
(2) Do not tighten too far.
"LAOIL PAN INSTALLATION
1. Clean the surface of the cylinder block and oil pan onto
which gasket is to be applied.
2. Squeeze out form-in-place gasket at a 4 mm width, and
apply onto the entire periphery of the oil pan flange.
Form-in-place gasket
Specified gasket:
Mitsubishi Genuine Part No. MD970389 or
equivalent
3. Note that the lengths of the bolts shown in the illustration
differ, so take care when installing.
MD998162
MD998783
Bolt hole section Groove
Timing belt side
M6×8

ENGINE OVERHAUL -Piston and Connecting Rod11B-58
INSTALLATION SERVICE POINTS
"AAPISTON PIN INSTALLATION
1. Measure the length of the following parts.
A : Piston pin installation section
B : Between piston boss
C : Piston pin
D : Connecting rod
2. Calculate using the following expression.
L = ((A - C) - (B - D))÷2
3. Insert the special tool’s push rod into the piston pin, and
remove guide A.
4. Align the piston and connecting rod front marks, and
assemble.
5. Apply engine oil on the periphery of the piston pin.
6. Insert the guide A side of the piston pin assembled in
step 3 into the pin hole from the front mark side of the
piston.
7. Screw guide B into guide A, and assemble so that the
clearance is the value 3 mm more than the value (L)
obtained in step 2.
8. Set onto the special tool’s piston setting base so that
the front mark faces upward.
9. Press in the piston pin using a press. If the press in
load is less than the standard value, replace the piston
pin (piston assembly), connecting rod or both parts.
Standard value: 7,355 - 17,162 N
Connecting rod
PistonPiston pin
BA DC
3mm+L
Guide B
Guide A
Push rod
Piston pin
Front mark
Front
mark
Guide A
Guide BBase

ENGINE OVERHAUL -Crankshaft and Cylinder Block11B-66
3. Select the bearing from the above table according to
the identification confirmed in steps 1 and 2.
[Example of selecting bearing]
(1) If the measured outer diameter of the crankshaft
journal is 57.000 mm, Class 1 applies, and the
identification colour is yellow.
(2) If the cylinder block bearing bore identification mark
is 0, select identification mark 0 in consideration of
step (1).
4. Install the grooved bearing on the cylinder block side.
5. Install the bearing with no oil groove onto the beam bearing
cap side.
"CABEAM BEARING CAP/BEARING CAP BOLT
INSTALLATION
1. Install the beam bearing cap with the arrow facing the
timing belt side.
2. Before installing the bearing cap bolt, confirm that the
bolt’s underhead length is less than the limit value.
Replace the bolt if it exceeds the limit value.
Limit value: 71.1 mm
3. Apply engine oil on the bolt threads and bolt surface.
4. Following the tightening order, tighten the bearing cap
bolt at 25±2N•m.
5. Make paint marks on the bolt head.
6. Using the position of the mark painted on the bolt head
as reference, make paint marks on the seat surface at
the 90_to 100_positions in the tightening direction.
7. Following the tightening order, tighten the bolt by 90_
to 100_, and confirm that the paint marks made on the
bolt and seat surface match.
Caution
(1) If the tightening angle is less than 90_, the
connection performance may not be attained, so
take special care when tightening.
(2) If the tightening angle exceeds 100_, completely
loosen the nut, and start again from step 1.Crankshaft bearing side
identification mark position
Identification
mark
Groove
Upper bearing
Lower bearing
Underhead length
Arrow
84159
732610
Paint marksPaint marks
90°- 100°

ENGINE COOLING -Water Pump14-13
WATER PUMP
Caution
If the vehicle is equipped with the Brembo disc brake, during maintenance, take care not to contact
the parts or tools to the caliper because the paint of caliper will be scratched.
REMOVAL AND INSTALLATION
Pre-remobal and Post-installation Operation
DEngine Coolant Draining and Supplying (Refer to P.14-6.)
DTiming Belt Removal and installation (Refer to GROUP 11A.)
1
Bolt specifications
28×22
2
23±3 N·m
14±1 N·m
Nominal diameter×Nominal length mm
8×70
8×14
8×22 8×25
3 4
22±4 N·m
Removal steps
1. Alternator brace
2. Water pump
3. Water pump Gasket
"AA4. O-ring
INSTALLATION SERVICE POINT
"AAO-RING INSTALLATION
Fit an O-ring into the O-ring groove located at the end of
the water inlet pipe and apply water to the O-ring or the
inside of the mounting surface of the water pump for insertion.
CAUTION
Do not let the O-ring get contaminated with grease, such
as engine oil.Water pump
O-ring
Water inlet pipe

ENGINE ELECTRICAL -Charging System16-3
ALTERNATOR SPECIFICATIONS
ItemsSpecifications
TypeBattery voltage sensing
Rated output V/A12/90
Voltage regulatorElectronic built-in type
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
Alternator output line voltage drop (at 30 A) V-max. 0.3
Regulated voltage ambient
tempatvoltageregulatorV
-20_C14.2 - 15.4-
temp. atvoltage regulatorV
20_C13.9 - 14.9-
60_C13.4 - 14.6-
80_C13.1 - 14.5-
Output current-70 % of normal output current
Rotor coil resistanceΩApprox. 3 - 5-
Protrusion length of brush mm-2
SPECIAL TOOL
ToolNumberNameUse
MB991519Alternator test
harnessChecking the alternator (S terminal voltage)

ENGINE ELECTRICAL -Charging System16-16
RECTIFIERS CHECK
1. Inspect the (+) heat sink by checking the continuity
between the (+) heat sink and stator coil lead wire
connection terminal using a tester probe.
If there is a continuity at both, the diode is short circuited,
so replace the rectifier.
2. Inspect the ( - ) heat sink by checking the continuity
between the ( - ) heat sink and stator coil lead wire
connection terminal using a tester probe.
If there is a continuity at both, the diode is short circuited,
so replace the rectifier.
3. Check the diode trio by connecting an ohmmeter to both
ends of each diode and check the continuity of the three
diodes.
If there is a continuity at both ends, or if there is no
continuity, the diode is damaged so replace the rectifier.
BRUSH CHECK
1. Measure the length of the brush protrusion shown in the
illustration, and replace the brush if the measured value
is below the limit value.
Limit: 2 mm or less
2. The brush can be removed if the solder of the brush
lead wire is removed.
3. When installing a new brush, insert the brush into the
holder as shown in the illustration, and then solder the
lead wires.
Protrusion
length
Soldered

ENGINE ELECTRICAL -Starting System16-17
STARTING SYSTEM
GENERAL INFORMATION
If the ignition switch is turned to the “START”
position, current flows in the pull-in and holding
coils provided inside magnetic switch, attracting
the plunger. When the plunger is attracted, the
lever connected to the plunger is actuated to
engage the starter clutch.
On the other hand, attracting the plunger will turn
on the magnetic switch, allowing the B terminaland M terminal to conduct. Thus, current flows to
engage the starter motor.
When the ignition switch is returned to the “ON”
position after starting the engine, the starter clutch
is disengaged from the ring gear.
An overrunning clutch is provided between the
pinion and the armature shaft, to prevent damage
to the starter.
SYSTEM DIAGRAM
Pull-in coilHolding coil
Ignition
switch
BatteryArmature
Brush
YokePlunger
Lever
Over-running
clutch
Pinion shaft
STARTER MOTOR SPECIFICATIONS
ItemsSpecifications
TypeReduction drive with planetary gear
Rated output kW/V1.2/12
No. of pinion teeth8
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
Pinion gap mm0.5 - 2.0-
Commutator outer diameter mm29.428.8
Commutator runout mm0.050.1
Commutator undercut mm0.50.2
Brush length mm-7.0

ENGINE ELECTRICAL -Starting System16-24
OVERRUNNING CLUTCH CHECK
1. While holding clutch housing, rotate the pinion. Drive
pinion should rotate smoothly in one direction, but should
not rotate in opposite direction. If clutch does not function
properly, replace overrunning clutch assembly.
2. Inspect pinion for wear or burrs. If pinion is worn or burred,
replace overrunning clutch assembly. If pinion is damaged,
also inspect ring gear for wear or burrs.
FRONT AND REAR BRACKET BUSHING CHECK
Inspect bushing for wear or burrs. If bushing is worn or burred,
replace front bracket assembly or rear bracket assembly.
BRUSH REPLACEMENT
1. Check the surface contacting the commutator for
roughness and the brush length.
Limit value: 7.0 mm
2. If the limit is exceeded, replace the brush holder.
ARMATURE TEST
ARMATURE COIL SHORT-CIRCUIT TEST
1. Check that the armature coil is not grounded.
2. Place armature in a growler.
3. Hold a thin steel blade parallel and just above while rotating
armature slowly in growler. A shorted armature will cause
blade to vibrate and be attracted to the core. Replace
shorted armature.
ARMATURE COIL EARTH TEST
Check the insulation between each commutator segment and
armature coil core.
If there is no continuity, the insulation is in order.
Free
Lock
Length
Growler