wheel torque MITSUBISHI LANCER EVOLUTION 2007 Service Owner's Guide

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-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)

SRS - Air Bag Modules and Clock Spring52B-55

1
Removal steps
DInstrument panel assembly
(Refer to GROUP 52A - Instrument
panel.)
A
F"1. Passenger’s air bag moduleInstallation steps
"AADPre-installation inspection
1. Passenger’s air bag module
DInstrument panel assembly
(Refer to GROUP 52A - Instrument
panel.)
DNegative ( - ) battery cable connection
"DADPost-installation inspection
REMOVAL SERVICE POINTS
AA"DRIVER’S AIR BAG MODULE REMOVAL
1. Remove the air bag module mounting screw (torque
screw) from the steering wheel side.
2. Spread the lock outward to remove the connector by
prying with a flat-tipped screw driver as shown in the
illustration at left.
Caution
(1) Be careful not to remove the connector forcibly.
(2) Keep the removed driver’s air bag module facing
the pad surface upward in a clean and dry place.
locked
Connector
Flat-tipped screw
driver
locked