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Chery B11. Manual - part 191

Chery B11 Service Manual Four-wheel alignment

3、Abnormal

Abrasion of Tyres

Undue abrasion of tyres illustrated in the right figure may

occur, consults possible reasons and disposal methods in

following table. (See the figure)

Possible reasons

Disposal methods

（a）

*Lack of tyre pressure (abrasion on

both sides)

*Turn in high-speed

*Location of tyres hasn’t been adjusted.

*Measure and adjust tyre pressure

*Speed down

*Adjust tyre location

（b）

*Tyre pressure is too high.

*Location of tyres hasn’t been adjusted.

*Measure and adjust tyre pressure

*Adjust tyre location

（c）

* Incorrectness of toe-in

*Adjust toe-in

（d）

*Incorrectness of camber or caster

*Suspension system failure.

*Tyre imbalance

*Out-of-round of brake drum or the

disk.

*Other mechanical problems

*Location of tyres hasn’t been adjusted.

*Adjust, fix or replace the axle and

suspension system.

*Fix or replace

*Keep the tyre in dynamic balance or

replace it.

*Calibrate or replace

*Adjust tyre location

4、

Precautions related to rims and tyres

（1）Don’t use substandard rims and tyres.

（2）Aluminum alloy steel rim is likely to be scraped, so use soft fabric to clean it instead of steel brush. Don’t use

boiling water to clean it directly if cleaning vehicles with steam.

（3）If toothed compound, such as mud or slurry is attached to aluminum alloy steel rim, it is needed to clean it with

neutral cleanser as quickly as possible to avoid damaging.

Double-side Wear

Center Wear

Toe-in Wear

Single-side Wear

Figure: Tyre Abrasion

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Chery B11 Service Manual Four-wheel alignment

5、Replacement of tyres

（1）Before equipping inner tube valve, check if valve

hole is smooth without a bur. Then apply glycerol onto

the rubber surface of inner tube valve or dip inner tube

valve into glycerol.

It is finished with installation

correctly via passing binding ring of

inner tube

valve through the hole of the vehicle under the pressure

of 200-400N

with special tools (Suds is allowable

for replacement of

glycerol.

)

（2）Before equipping tyres, apply glycerol or suds

onto the bead and note: When there’s a dub mark on

wheel rim, align the mark of tyre uniformity test with the

dub mark. When there isn’t a dub mark on wheel rim,

align the mark of dynamic balance test with inner tube

valve. When there is neither a dub mark on wheel rim nor

the mark of dynamic balance test, but there is a mark of

static balance test, align test mark of static balance with

inner tube valve.

6、Tyre pressure

Check pressure of all tyres, including spare tyres and adjust

it when needed. Inflate tyres according to given pressure

strictly. Air pressure can’t exceed 10% of rated air pressure

during inflation. When installing spare tyres assy separately,

rated inflation pressure shall be 2.5 bar and they shall be

stocked in isolation from four wheels for equipping the

vehicle. Before processing four-wheel alignment, check

tyres pressure of 4 wheels and adjust it : front wheel :

2.2bar，rear wheel 2.0bar.(See the figure)

7、Air Leakage

Make sure there’s no air leakage of inner tube valve as

shown.

Check tyre pressure

tyre

Air Leakage

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Chery B11 Service Manual Four-wheel alignment

8、Check out-of-flat of rims

（1）Prop up vehicles high and safely.

（2）Fix up micrometer indicator equipped with cylindrical

finger（Φ10）on the edge of wheel rim to measure depth of

out-of-flat.(See the figure)

(3) If needed, replace the

rim.

Note: allowable deformation in wheel rim:

Allowable maximum value of out-of-flat depth average on both edges of wheel rims can’t exceed:

Steel wheel rim: 5mm

Aluminum alloy wheel rim: 3mm

9、Adjust tyre location

In view of extending tyre life and making sure tyre abrasion situation, adjust tyre location per 6000km

（3750miles）.

(See the figure)

Caution:

*It is needed to use the highest quality tyre for front wheel.

*After adjusting tyre location, adjust tyre pressure to assigned

pressure value. Adjust tyre location

10、 Wheel balance adjustment

After tyre inflation, screw valve-protecting cap to process

dynamic balance test and equip suitable balance weight on the inner

and outer edges of wheel rim according to the requirement, and require

the last unbalance degree assy is less than 100g· cm (about 5g of

balance weight on the inner and outer edges of wheel rim).

Check out-of-flat of rims

Adjust tyre location

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Chery B11 Service Manual Four-wheel alignment

Note: Allow at least one balance weight per side of per wheel

and maximum mass is less than and equals to 70g. In the process of

equipping, avoid hitting balance weight too heavily. If so, replace

balance weight in time. Balance weight replaced mustn’t be used

again.

11、Installation

(1) When installing wheel and tyre assembly, screw wheel bolts into wheel rim with hands to be preloading. After

preloading, screw it on with special tools in the diagonal to screw the moment of a force (100~120N.m). It’s forbidden to

use impact wrench to avoid damaging wheels, loosening and tightening. It’s forbidden to apply lubricating grease on wheel

bolts. (It’s needed for wheel and tyre assembly equipped to screw wheel bolts on once and tighten the moment of a force

after the first running of 100km. It’s one of the content of routine maintenance to check wheel bolts and tighten the moment

of a force.)

(2) Tighten nuts by crossing. The degrees of screwing should be close to

each other and make sure that wheels can turn freely. After tightening,

wheels lie on the ground.

（3）Install trimming cover or place trimming cover according to

requirements. When installing ferrule-type trimming cover, flap it with

hands or knock it in with rubber tools.

Outer side

Balance weight

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Content .. 189 190 191 192 ..