Mitsubishi Lancer Evolution IX. Manual — part 566

TROUBLESHOOTING

WHEEL AND TYRE

31-5

<WHEEL BALANCER CALIBRATION
CHECKS>

1. Mount an undamaged original-equipment alloy

rim and tyre assembly (wheel) onto your
off-the-car wheel balancer. Balance the wheel.

2. <<Zero Calibration Check>> Loosen the balancer

wing nut, rotate the wheel a half-turn (180

°), and

retighten the nut. Recheck the balance.

• If the imbalance is 5 g or less, the zero calibration

is OK. Rebalance the wheel, then go to Step 4 to
check static balance.

• If the imbalance is more than 5 g, go to Step 3.

3. Loosen the balancer wing nut, rotate the wheel

1/4 turn (90

°), and retighten the nut. Recheck the

wheel balance.

• If the imbalance is 5 g or less, the wheel may not

be centred on the balancer, or the balancing
cones, the cup, and/or wing nut are damaged,
dirty, or inappropriate for the wheel. You may
need to refer to the balancer manufacturer's
instructions to verify the correct attachments.
After making the necessary corrections, recheck
the wheel balance. If OK, then go to Step 4.

• If the imbalance is more than 5 g, the balancer

requires calibration. Contact the balancer manu-
facturer for calibration by their repair representa-
tive.

4. <<Static Balance Check>> Attach a 5 g weight to

the outer rim. Recheck the balancer. The balancer
should detect 5

± 2 g of imbalance 170 to 190°

away from the 5 g weight.

• If the imbalance is within specification, the static

balance calibration is correct. Go to Step 5 to
check the dynamic balance.

• If the imbalance is out of specification, the bal-

ancer requires calibration. Contact the balancer
manufacturer for calibration by their repair repre-
sentative.

5. <<Dynamic Balance Check>> Attach a 5 g weight

to the inner rim at 180

° opposite the 5 g weight

that was added in Step 4. Recheck the balance.
The balancer should detect 5

± 2 g of imbalance

170 to 190

° away from both the inner and outer 5

g weights.

• If the imbalance is within specification, the

dynamic balance calibration is correct. The bal-
ancer calibration checks are complete.

• If the imbalance is out of specification, the bal-

ancer requires calibration. Contact the balancer
manufacturer for calibration by their repair repre-
sentative.

TROUBLESHOOTING

WHEEL AND TYRE

31-6

WHEEL BALANCER CALIBRATION
CHECKING FLOW CHART

AC502720AB

Balance wheel.

Rotate wheel 1/2 turn.

Imbalance = 5 g or less

Imbalance = more than 5 g

Rebalance wheel.

Rotate wheel 1/4 turn.

Imbalance = 5 g or less

Imbalance = more than 5 g

Verify wheel is properly centred.
Verify cones, cup, and wing nut are clean,
undamaged, and appropriate for wheel.
Make necessary corrections, then recheck
wheel balance.

Attach a 5 g weight to the outer rim.
Is the imbalance 5 ± 2 g at 170 – 190˚ away from the
5 g weight?

YES

NO

Attach a 5 g weight to the inner rim at 180˚ opposite
the weight on the outer rim.
Is the imbalance 5 ± 2 g at 170 – 190˚ away from
both 5 g weights?

YES

NO

Balancer does not require
calibration.

Balancer requires calibration.
Contact balancer manufacturer.

ZERO CALIBRATION
CHECK

STATIC BALANCE
CHECK

DYNAMIC BALANCE
CHECK

ON-VEHICLE SERVICE

WHEEL AND TYRE

31-7

ON-VEHICLE SERVICE

TYRE INFLATION PRESSURE CHECK

M1311000900419

NOTE: For information on tyre inflation pressure,
refer to the label attached to the centre pillar on the
driver's side.

TYRE WEAR CHECK

M1311001000442

Measure the tread depth of the tyres.

Minimum limit: 1.6 mm

If the remaining tread depth is less than the minimum
limit, replace the tyre.
NOTE: When the tread depth of the tyres is reduced
to 1.6 mm or less, wear indicators will appear.

WHEEL RUNOUT CHECK

M1311001100461

ACX00651AB

Lateral

Radial

Jack up the vehicle so that the wheels are clear of
the floor. While slowly turning the wheel, measure
wheel runout with a dial indicator.

Limit:

Radial runout; 1.0 mm or less
Lateral runout; 1.0 mm or less

If wheel runout exceeds the limit, replace the wheel.

WHEEL AND TYRE

INSTALLATION SERVICE POINT

M1311001300379

Tighten the wheel nuts to the specified torque.

Tightening torque: 98

± 10 N⋅m

NOTES