2007 MITSUBISHI LANCER EVOLUTION steering wheel

STEERING -General Information37A-3
CONSTRUCTION DIAGRAM
Reservoir tank
Reservoir tank

Steering gear and linkage Return hose
Suction hose
Pressure hoseSteering wheel
Steering column and shaft
Oil pump
assembly

Steering gear
and linkage Return hose
Suction hose
Pressure hoseSteering wheel
Steering column and shaft
Oil pump
assembly
Cooler tube
Cooler tube

STEERING -Service Specifications/Lubricants/Sealant/Special Tools37A-4
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
Steering wheel free play mmwhen engine running-30 or less
with engine stopped0-10-
Steering angleInner wheel31_45’±1_30’-
Outer wheel 27_15’-
Ball joint turning torque N·m1.0 - 3.0-
Stationary steering effort NSteering effort32 or less-
Fluctuation allowance6.0 or less-
Oil pump relief pressure MPa8.4 - 9.0-
Pressure under no-load conditions MPa0.2 - 0.8-
Steering gear retention hydraulic pressure MPa8.4 - 9.0-
Oil pressure switch operating
pressureMPa
OFF→ON1.8 - 2.4-
pressure MPaON→OFF1.0 - 2.4-
Total pinion torque N·mTotal rotation torque0.8 - 1.8-
Torque variation0.49 or less-
Tie rod joint swing resistance N (Tie rod joint swing torque N·m)8 - 27 (1.5 - 4.9)-
Opening dimension of special tool (MB991561) mm2.9-
Band crimped width mm2.4 - 2.8-
LUBRICANTS
ItemsSpecified lubricantQuantity
Power steering fluidAutomatic transmission fluid DEXRONIIApprox. 1.0 L
Tie rod bellowsSilicone greaseAs required
Pinion and valve assemblyRepair kit greaseAs required
Rack assembly
SEALANT
ItemsSpecified sealantRemarks
Toe boad (steering shaft cover
mounting bolt hole)3M ATD Part No. 8513 or equivalentDrying sealant
Rack support cover end plug3M ATD Part No. 8661, 8663 or equivalentSemi-drying sealant
SPECIAL TOOLS
ToolNumberNameUse
MB990635,
MB991113 or
MB991406Steering linkage
pullerDisconnection of tie rod end

STEERING -Special Tools37A-5
Tool UseName Number
MB991006Preload socketMeasurement of the total pinion torque
MB990326Preload socketMeasurement of the ball joint turning torque
MB990993Power steering oil
pressure gauge
adapter (pump
side)Measurement of oil pressure
MB990994Power steering oil
pressure gauge
adapter (hose
side)
MB990662Oil pressure gauge
assemblyMeasurement of oil pressure
MB991204Torque wrench
socketDAdjustment of rack support
DRemoval of rack support cover
MB990784Ornament removerRemoval of steering wheel cover

MB990803Steering wheel
pullerDisconnection of the steering wheel
MB991199Oil seal and
bearing installerDPress fitting of rack housing bearing
DTo press in the oil seal for the rack

STEERING -On-vehicle Service37A-7
ON-VEHICLE SERVICE
STEERING WHEEL FREE PLAY CHECK
1. With engine running (hydraulic operation), set front wheels
straight ahead.
2. Measure the play on steering wheel circumference before
wheels start to move when slightly moving steering wheel
in both directions.
Limit: 30 mm or less
3. When play exceeds the limit, check for play on steering
shaft connection and steering linkage. Correct or replace.
4. If the free play still exceeds the limit value, set steering
wheel straight ahead with engine stopped. Load 5 N
towards steering wheel circumference and check play.
Standard value: 0 - 10 mm
5. If the play exceeds the standard value, remove steering
gear box and check total pinion torque. (Refer to
P.37A-17.)
STEERING ANGLE CHECK
1. Locate front wheels on turning radius gauge and measure
steering angle.
Standard value:
Inner wheel31_45’±1_30’
Outer wheel27_15’
2. When the angle is not within the standard value, the
toe-in is probably incorrect. Adjust the toe-in.
Standard value: 0±2mm
Adjust the toe-in by undoing the clip and lock nut, and
turning the left and right tie rod turnbuckles by the same
amount (in opposite directions).
3. Recheck the steering angle.
TIE ROD END BALL JOINT TURNING TORQUE
CHECK
1. Disconnect tie rod and knuckle with special tool.
Caution
(1) Loosen the nut of the special tool, but do not
remove it. If it is removed, the ball joint thread
may be damaged.
(2) Tie the special tool with a cord so as not to fall
off.
Clip
Lock nut
Cord
Ball jointNutMB990635,
MB991113 or
MB991406

STEERING -On-vehicle Service37A-8
2. Move ball joint stud several times and install nut on stud.
Measure ball joint turning torque with special tool.
Standard value: 1.0 - 3.0 N·m
3. When the turning torque exceeds the standard value,
replace tie rod end.
4. When the turning torque is under the standard value,
check ball joint for end play or ratcheting. If none of these,
the joint is still serviceable.
STATIONARY STEERING EFFORT CHECK
1. With the vehicle stopped on a flat, paved surface, turn
the steering wheel to the straight ahead position.
2. Start the engine and set it to 1,000±100 r/min.
3. Attach a spring balance to the outer circumference of
the steering wheel and measure the steering force
required to turn the steering wheel from the straight ahead
position to the left and right (within a range of 0.9 turns).
Also check to be sure that there is no significant fluctuation
of the required steering force.
Standard value:
Steering effort32 N or less
Fluctuation allowance6.0 N or less
4. If the standard values are not met, check and adjust
the related parts.
CHECKING STEERING WHEEL RETURN TO
CENTRE
To make this test, conduct a road test and check as follows.
1. Make both gradual and sudden turns and check the
steering “feeling” to be sure that there is not difference
in the steering force required and the wheel return between
left and right turns.
2. At a speed of 35 km/h, turn the steering wheel 90_and
release the steering wheel after 1 or 2 seconds. If the
steering wheel then returns 70_or more, the return can
be judged to be satisfactory.
NOTE
There will be a momentary feeling or “heaviness” when
the wheel is turned quickly, but this is not abnormal. (This
is because the oil pump discharge amount is especially
apt to be insufficient during idling.)
DRIVE BELT TENSION CHECK
Refer to GROUP 11A - On-vehicle Service.
MB990326
70_70_

STEERING -On-vehicle Service37A-9
POWER STEERING FLUID LEVEL CHECK
1. Park the vehicle on a flat, level surface, start the engine,
and then turn the steering wheel several times to raise
the temperature of the fluid to approximately 50 - 60_C.
2. With the engine running, turn the wheel all the way to
the left and right several times.
3. Check the fluid in the oil reservoir for foaming or milkiness.
Check the difference of the fluid level when the engine
is stopped, and while it is running. If the change of the
fluid level is 5 mm or more, air bleeding should be done.
POWER STEERING FLUID REPLACEMENT
1. Raise the front wheels on a jack, and then support them
with rigid racks.
2. Disconnect the return hose connection.
3. Connect a vinyl hose to the return hose, and drain the
oil into a container.
4. Disconnect the ignition coil connectors. (Refer to
GROUP16 - Ignition System.)
5. While operating the starting motor intermittently, turn the
steering wheel all the way to the left and right several
times to drain all of the fluid.
6. Connect the return hoses securely, and then secure it
with the clip.
7. Fill the oil reservoir with specified fluid up to the lower
position of the filter, and then bleed air.
Specified fluid:
Automatic transmission fluid DEXRONII
Caution
Do not use ATF-SPIIM and ATF-SPIII.
POWER STEERING SYSTEM BLEEDING
1. Jack up the vehicle and support the front wheels with
rigid racks.
2. Disconnect the ignition coil connectors. (Refer to
GROUP16 - Ignition System.)
3. Cranking the engine with the starter several times
intermittently (during 15 to 20 seconds), turn the steering
wheel left and right fully five or six times.
Caution
(1) During the bleeding, refill the fluid so that the
level never falls below the lower position of the
filter.
(2) Be sure to bleed air only while cranking. If the
bleeding is done with the engine running, the air
will be broken up and absorbed into the fluid.
4. Connect the ignition coil connectors and idle the engine.
5. Turn the steering wheel left and right fully until no bubbles
comes out in the oil reservoir.
6. See that the fluid is not milky and that the fluid level
is up to the specified position on the level gauge.
7. See that the fluid level changes little when the steering
wheel is turned left and right.
8. Check difference in fluid levels between the engine
stopped and running.
Fluid level change: Within 5 mm
While engine
runningWhile engine
stopped
Return hose
Vinyl hose

STEERING -On-vehicle Service37A-10
9. If the level changes more than 5 mm, the air is badly
bled. So, bleed air again.
Caution
(1) If the fluid level rises suddenly after the engine
is stopped, the bleeding is incomplete.
(2) Incomplete bleeding causes abnormal noises
from the pump and the flow-control valve. This
could lessen the life of the pump and the other
parts.
OIL PUMP PRESSURE TEST
1. Disconnect the pressure hose from the oil pump, and
then connect the special tools.
2. Bleed the air, and then turn the steering wheel several
times while the vehicle is not moving so that the
temperature of the fluid rises to approximately 50 - 60_C.
3. Start the engine and idle it at 1,000±100 r/min.
4. Fully close the shut-off valve of the pressure gauge and
measure the oil pump relief pressure to confirm that it
is within the standard value range.
Standard value: 8.4 - 9.0 MPa
5. If the standard value is not met, the oil pump is defective.
So, replace the oil pump. Then, measure oil pressure
again.
6. With the pressure gauge shut - off valve fully open, check
the hydraulic pressure in unladen condition.
Standard value: 0.2 - 0.8 MPa
7. If the standard value is not met, the oil line or steering
gear is probably defective. So, repair and measure oil
pressure again.
8. Turn the steering wheel fully either left or right and check
the retention hydraulic pressure.
Standard value: 8.4 - 9.0 MPa
9. If the pressure is below the standard value, disassemble
and reassemble the steering gear. If above, replace the
oil pump. Then, measure oil pressure again.
10. Remove the special tools, and tighten the pressure hose
to the specified torque.
Tightening torque: 18±3 N·m
11. Bleed the system.
Fluid level change: Within 5 mm
While engine
runningWhile engine
stopped
Temperature
gaugePressure
gauge
(MB990662)Shut-off valve
Oil
pumpOil reservoir
Adapter
(MB990994)
Adapter
(MB990993)

STEERING -On-vehicle Service37A-11
POWER STEERING OIL PRESSURE SWITCH
CHECK
1. Disconnect the pressure hose from the oil pump, and
then connect the special tools.
2. Bleed the air, and then turn the steering wheel several
times while the vehicle is not moving so that the
temperature of the fluid rises to approximately 50 - 60_C.
3. The engine should be idling.
4. Disconnect the connection of the connector for the oil
pressure switch, and set an ohmmeter in position.
5. Gradually close the shut-off valve of the pressure gauge
and increase the hydraulic pressure, then check whether
or not the hydraulic pressure that activates the switch
is the standard value.
Standard value: 1.8 - 2.4 MPa
6. Gradually open the shut-off valve and reduce the hydraulic
pressure; then check whether or not the hydraulic pressure
that deactivates the switch is the standard value.
Standard value: 1.0 - 2.4 MPa
7. Remove the special tools, and then tighten the pressure
hose to the specified torque.
Tightening torque: 18±3 N·m
8. Bleed the system.
BALL JOINT DUST COVER CHECK
1. Check the dust cover for cracks or damage by pushing
it with finger.
2. If the dust cover is cracked or damaged, replace the
tie rod end.
NOTE
Cracks or damage of the dust cover may cause damage
of the ball joint.
Temperature
gaugeShut-off valve
Oil
pump
ReservoirAdapter
(MB990993)Pressure
gauge
(MB990662)
Adapter
(MB990994)