Chery Fora (Elara A520). Manual — part 113

CHERY A520 SERVICE MANUAL CHASSIS

39

6.

Tire pressure

Use barometer to check the pressure of all
tires (including spare tires), and regulate the
pressure if necessary. Inflate the tire strictly
in accordance with the specified pressure
standard, and ensure the tire pressure not
more than 10% rated air pressure during the
process of inflation. The spare tires should
have a rated inflation pressure of 2.5bar and
shall be stored in other areas separate from
the car’s four wheels. Prior to the four-wheel
alignment, you should check the tire pressure
of the four wheels, and regulate the pressure:
front wheel is 230Kpa, while rear wheel is
210Kpa. It is shown in the right figure:

7.

Air leakage

Check whether there is air leakage on the tire
valve. It is shown in the right figure:

8.

Check the unevenness of rim

(1)

Uplift the car and securely support it.

(2)

Fix

a

micrometer

guage(Φ10)

furnished

with

cylindrical

contact

fingers on the edge of rim and measure
its unevenness. It is shown on the right
figure.

(3)

Replace the rim if necessary.

Note: Allowed rim deformation:

On the both edges of rim, the allowed
maximum average value of the unevenness
depth should not exceed:

Steel rim: 5mm

Check the Unevenness of Rim

Tire Pressure Inspection

Tire

Tire valve

CHERY A520 SERVICE MANUAL CHASSIS

40

Aluminum-alloy rim: 3mm

9.

Tire rotation

In order to prolong the operating life of tire
and determine the tire wearing, tire rotation
should be carried out when every 6000km is
reached.

Note:

*

The best tire must be selected for front
wheel.

*

After tire alignment, the tire pressure
should be regulated to specified value.

10.

Wheel balance adjustment

After inflating the tire, you should screw up
the hood of tire valve to carry out dynamic
balance test, and install appropriate balance
weights on the inner and outer edges of rim
as per the requirement. The final total
unevenness degree should be less than
100g.cm, that is, each balance weight on the
inner and outer edges of rim is about 5g.
Note: Not more than one balance weight can
be furnished on each side of each wheel,
with its maximum weight not exceeding 40g.
During the process of assembly, you should
prevent the balance weight from being
heavily hit. If it is heavily hit, you should
replace the balance weight timely. The
replaced balance weight cannot be reused.

Balance

Weight

Balance Weight

Outer Side

Tire Rotation

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41

11.

Wheel disassembly

Disassembly sequence:

(1)

Dismount the fastening bolt of wheel;

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42

(2)

Unbolt the wheel.

Assembly process

(1)

When installing the wheel and tire
assembly, you should fasten the wheel
bolts onto the wheel hub by using your
hands, and then take special tools to
fasten it tightly according to the
diagonal process, with the tightening
torque of 110±10 Nm. Impact wrench is
prohibited to use in order to prevent the
wheel from being damaged or screwed
up too loose or too tight. Lubricant
grease cannot be applied onto the wheel
bolts. (After the initial driving of
100km, the bolts of the installed wheels
and tire assembly should be fastened
once to ensure the fastening torque. The
inspection on the fastening torque of
wheel bolts is one of the daily
maintenance works).

(2)

When fastening fixing nuts, you should
adopt cross method. The fasten degrees
of all fixing nuts should be similar, and
wheels can rotate freely. Finally, when
tightly fastened, the wheels should be
on the ground.

(3)

Furnish with decoration cover or
deployed the decoration cover as per
requirement.

When

installing

card-typed decoration cover, you should
slap by hand or use rubber tools to
knock it in.