Chery QQ6 (S21) / S12LHD. Manual — part 178

III. Adjustment of Four-Wheel Alignment

Please conduct the measurement and adjustment of parameters on

the four-wheel alignment instrument recommended by Chery Auto.

1. Adjustment of Front Wheel Toe-In

The toe-in can be adjusted by means of the optical testing

instrument or mechanical toe-in adjustment instrument.

1.1 Depending on the requirements of the testing instrument,

conduct the pre-adjustment preparations for the wheel alignment;

1.2 Loosen the lock nuts of right steering track rod and the spring

clips of protective sleeve. Based on the demands, rotate the toe-in

adjustment rod to adjust the length, till reach the specified value.

Toe-in value: 6′±6′

1.3 Tighten the lock nuts and install the spring clips of the

protective sleeve. Check if the lock nuts are properly tightened

and the protective sleeve is in right position;

Torque: 35±3 Nm
1.4 At the finish of toe-in adjustment of front wheels, check the

steering wheel for levelness. Otherwise, loosen the lock nuts of the

steering wheel, adjust the steering wheel to level position, and then

tighten the lock nuts of the steering wheel to the specified torque.

2. Adjustment of Front Wheel Camber Angle

2.1 Under normal conditions, it’s unnecessary to adjust the camber

angle after the assembling of independent suspension and wheel

steering joint. In case the wheel camber angle is out of the tolerance

scope due to other reasons, it may be calibrated by means of the

connecting bolts of independent suspension and steering joint.

Front wheel camber angle: 0.87°±50′

2.2 Before the calibration, check (visual observation) the driving

system components for damage and replace the damaged parts.

2.3 In case the front wheel camber angle is out of tolerance,

loosen the connecting bolts of front shock absorber and steering

joint and move the wheels for correction.

3. Adjustment of

Caster Angle and Kingpin Inclination

The caster angle and the kingpin inclination are guaranteed by the

designed structure and are free of adjustment during use.

Caster angle: 3.4°±30′

Kingpin inclination: 12.7°If the parameters are out of the specified

range, replace the steering joint.

4. Adjustment of Rear-Wheel Alignment Parameters

All of the rear wheel positional parameters shall be guaranteed

through design process.

4.1 Rear wheel camber angle: 0°±30′

4.2 Rear wheel toe-in: 0°±10′

4.3 If the deformation of rear shaft arising from the great impact

force causes the change of rear wheel alignment parameters that out

of the specified range, correct the rear axle or replace the rear axle.

IV.

Tire

Installation

and

Air

Pressure

Adjustment

1. Installation of Air Valve

Prior to installing tire valve, firstly check the valve port to ensure

whether it is smooth and free from burr, and then apply glycerol on

the rubber body surface, or soak the tire valve into glycerol. Pull or

press (200 - 400N) using special tools to make the locating ring of

the valve can go through the wheel holes, to this point, the

assembly is completed (soap water is allowed to substitute

glycerol).

2. Tire Assembling

Before fit the tire, apply glycerol or soap water along the cycle of

tire bead, meanwhile, note that:

2.1 When there is colored dot on the wheel rim, align the

uniformity testing mark of tire to the colored dot mark of wheel

rim.

2.2 When without colored dot on the wheel rim, align the dynamic

balance testing mark of tire to valve position.

2.3 When without colored dot on the wheel rim, additionally, there

is no dynamic balance testing mark, however, static balance testing

mark is available, at this point, align the tire valve to the static

balance testing mark.

2.4 The description concerning the uniformity, dynamic balance

and static balance testing marks for tires will be additionally

provided in writing by the product division of Chery Company or

suppliers. In addition, this kind of descriptions will clearly be

indicated on process sheet.

2.5 Carry out tire inflation strictly in accordance with specified

pressure. During inflating process, air pressure shall not exceed

10% of rated pressure. When performing separate packaging to

spare wheel assembly, the rated inflation pressure shall be 3.0bar,

and the spare wheel assembly shall be stored separately from four

wheels. Before the four-wheel alignment, check the air pressure of

all wheels and adjust the air pressure: 2.3bar for front wheels and

2.1bar for rear wheels.

3. Tire Inflation

After completion of tire inflation, screw up the protective cap of

valve, and then carry out dynamic balancing test. Fit appropriate

balance weight at the internal and external fringe of wheel rim as

required. It is required that the unbalancedness of the final

assembly shall be less than 100g·cm, which is approximately

equivalent to a 5g balance weight at the internal and external

fringe of wheel rim. Note: each wheel and each side can use only

one balance weight. Additionally, its maximum mass shall not be

more than 70g. During assembling process, never hit the balance

weight too heavy. Otherwise, replace balance weight in time. In

addition, never use the replaced balance weight again.

4. Installation of Wheel and Tire Assembly.

When fixing wheel and tire assembly, first, manually screw up the

wheel bolt onto the hub for pretension, after that use special tools

for tightening in accordance with diagonal process. Tightening

torque shall be 110±10N.m. It is prohibited to use impact wrench

to prevent from wheel damage, over loose or over tight. It is not

allowed to apply grease on wheel bolt (For new installed wheel

and tire assembly, the wheel bolts should be tightened at first

running of 100km to guarantee the tightening torque. The

tightening torque checking of wheel bolts is one of the items of

regular maintenance)

5. Tightening Method of Wheel Nuts

Tighten the fixing nut in a decussate way, the tightening force shall

be approximately equal, then wheel shall be able to turn freely.

When carry out final tightening, the wheel shall be on the ground.

6. Installation of Decorative Cover

Mount trim cover or place trim cover as required. When fitting clip-

type trim cover, place knock in position by hand or via rubber tools.

Chapter 3 Removal/Installation and Overhaul of Steering System

I. Removal/Installation of Steering Gear

1. System Composition Illustration

1. Booster steering liquid reservoir

2. Bracket fixing bolt

3. Bracket fixing nut

4. Outlet pipeline

5. Reservoir fixing bracket

6. Steering pump

7. Tensioner

8. Lock nut

9. Adjustment nut

10. Adjustment tie rod

11. Pipe clamp

12. Steering gear

13. Outlet pipeline

14. 15. Fixing bolt

16. Fixing nut

17. Return pipeline