Great Wall Sing (2006 year). Service Manual - part 8

SA-7

Suspension System and Automobile Axle

 Alignment of Front Wheel 
 Alignment of Front Wheel (SF)

In case the outer tilt angle of front wheel or the back tilt angle

of kingpin fails to conform to the specified value, adjust the

cam forward or backward may amend them.

5.

Wheel angel adjustment

Take apart the limit bolt cap of the steering knuckle to check

the inner wheel steering angle A.

The inner wheel steering angle: =32

Notice:The wheel should not touch the body brake hose

when the steering wheel is rotated to the bottom.

In case the max steering angle is not in the conformity with the

standard value, adjust the wheel angle through the limit bolts

of steering knuckle.

In case the wheel angle still fails to fall within the standard

range, make a inspection and change the weary and damaged

steering mechanism parts.

6.

Wheel toe-in adjustment

Adjust the wheel toe-in according to the following approach

(a)

Raise or reduce the vehicle until the suspension stands in

balance.

(b)

Push the vehicle on the ground 5 meters forward under

the condition that the front wheels locate forward in a

line.

front cam adjustment

rear cam adjustment

reduce

increase

increase

reduce

A

B

A

B

front

SA-8

Suspension System and Automobile Axle

 Alignment of Front Wheel (SF)

(c)

Mark the center of the back of front wheel, and measure

the distance ìBî between the remarks on the left and right

tires.

(d)

Push the vehicle forward so that the mark on the back of

tire moves to the measuring height of the instrument.

Remark: if the tire moves too far, repeat the approach (b).

(e)

Measure the distance ìAî between the marks on the front

of tire.

(f)

Measure the wheel toe-in.

Toe-in = B-A

Inspection standard: (0-2)mm

In case the toe-in fails to conform to the specified value, it can

be amended through adjusting the left and right drag rods.

(g)

Loosen the clamping bolt and nut.

(h)

Adjust the toe-in situation by the approach of rotating the

left and right drag rod by a same angle.

(i)

Ensure the left and the right drag rods are same in length.

B

forward

move the vehicle forward

A

front

A

B

A=B

SA-9

Suspension System and Automobile Axle

 Alignment of Front Wheel (SF)

(j)

Tighten the clamping bolts and lock them with split pin.

Remark: the clamping bolt should face the front of the vehicle.

(k)

Side-slip inspection

Sideslip: =5m/km

front

SA-10

Front wheel hub and steering knuckle

Element Drawing

front wheel hub snap ring

25-28

 front wheel hub oil seal

brake caliper

plain washer

bearing 32007

front wheel hub and
front brake disc

bearing 30205

locking nut

front wheel hub cap

stop washer

dust cover

steering knuckle arm

steering knuckle

85-105

98-118

100-120

132-152

 Used component which can not be used any more

N

m

: specific torque

Dr

front brake shell

Suspension System and Automobile Axle (Dr/2WD) 

 Front Wheel Hub and Steering Knuckle

SA-11

4.

Take apart the front wheel hub oil seal, the inner race and

roller assembly of bearing 32007.

(a)

Pry out the oil seal.

(b)

Take out the bearing inner race and roller assembly.

Front Wheel Hub

Disassembly of Front Wheel Hub

1.

Take apart the brake caliper.

2.

Take apart the front wheel hub cap.

3.

Take apart the front wheel hub and front brake disc:

(a)

Take apart the split pin to take down the lock cover.

(b)

Screw off the lock nuts of the hub bearing with spanner

and take down the stop washer.

(c)

Take apart the front wheel hub and front brake disc with

the bearing 30205 together.

Disassembly the wheel hub and suspend it with tightwire.

Remark: Donít dismantle the brake hose and brake metal pipe

Takeapart the front wheel hub cap from the gap between the

front wheel hub cap and the front wheel hub.

5.

Bearing outer race inspection and tear-down

(a)

Inspect the bearings

Clean each bearing and check them to see whether there is wear

or damage.

(b)

Take apart the bearing outer race

Tap out the bearing outer race with copper bar and hammer.

Notice: bind the disassembled inner and outer bearing

race together to avoid of mixing.

Suspension System and Automobile Axle (Dr/2WD) 

 Front Wheel Hub and Steering Knuckle (Front Wheel Hub)

SA-12

6.

Inspection and replacement for front brake disc

(a)

Check the wear situation of the front brake disc. (see Dr

the brake caliper).

(b)

Use the spanner to tear down the bolts that connect the

front wheel hub and the front brake disc.

(c)

Connect the front wheel hub and the front brake disc with

bolt and spring washer, and screw up the bolts with a

moment spanner to the specified torque in the diagonal

order.

Fastening torque

(60-79)N
m

(d)

Conduct the equilibrium test on the dynamic balancer,

the amplitude value displayed should not be larger than

13.5g under the condition that the measuring rotating

velocity is 796 r/m and the locking rotating velocity is

786 r/m, when the amplitude value is larger than 13.5 g,

encase the counter balanced clip, which is 4 g each, at the

corresponding phase, the number of the clip encased

should not be more than four.

7.

Bearing outer race change

Press in the new bearing outer space with the special service

tools.

Notice: the bearing inner and outer races should be changed at

one time.

Assembly of Front Wheel Hub

1.

Mount on the Bearing 32007 inner race and roller assem-

bly as well as the front wheel hub oil seal.

Coat the lithium base grease of (4-5)mm on the inner surfaces

of bearing outer race and the front wheel hub, encase the

Bearing 32007 inner race and roller assembly, plaster the

lubricant again. Coat a little lubricant on the lips of front wheel

hub oil seal and then tap it in place.

Notice: do not make the lubricant contact the front brake

disc face.

2.

Mount on the Bearing 32007 inner race.

After coating the bearing outer race with the lithium base

grease of 4-5 mm, encase the inner race and roller assembly of

Bearing 30205, and plaster the lubricant again.

Suspension System and Automobile Axle (Dr/2WD) 

 Front Wheel Hub and Steering Knuckle (Front Wheel Hub)

SA-13

3.

Mount the front wheel hub on the steering knuckle.

Coat a little lubricant at the position of the steering knuckle

where the oil seal locates, mount the front wheel hub and front

brake disc on the steering knuckle, and then mount on the stop

washer.

4.

Preload adjustment

(a)

Mount on the lock nut and screw up according to the

specified torque.

Fastening torque

(130-150)N
m

(b)

Run the front wheel hub about 1/4-1/3 of circle, and

combine it with the bearing seat.

(c)

Loosen the locking nut to ensure the front brake disc run

freely, and then screw up the nuts to the specified torque.

Fastening torque

(25-35)N
m

(d)

Hook the front wheel hub with the spring-tension meter

and pull the spring-tension meter slowly in the tangential

direction of this spot.

The reasonable range of tension force: (16-33)N.

Remark: if the tension force is larger or smaller of the reason-

able range, screw up the nuts again until the tension force falls

within the reasonable range.

(e)

Measure the bouncing value of the front brake disc,

which should not be larger than 0.11mm.

5.

Mount on the lock cover and the split pin

Suspension System and Automobile Axle (Dr/2WD) 

 Front Wheel Hub and Steering Knuckle (Front Wheel Hub)

SA-14

6.

Tap in the front wheel hub with a rubber hammer

7.

Mount the brake caliper on the steering knuckle.

Fastening torque

(85-105)N
m

Steering Knuckle

Disassembly of Steering Knuckle

1.

Take apart the brake caliper, the front wheel hub and the

front brake disc.

2.

Take apart the front brake shell:

(a)

Tear down the two bolts (M8X16).

(b)

Tear down the two split pins, grooved nuts, washer and

bolts that connect the steering knuckle arm.

3.

Tear down the steering knuckle

(a)

Support the lower arm with jack;

(b)

Tear down the two split pins and the grooved nuts

(c)

Disconnect the steering knuckle from the upper and

lower ball studs and take apart it.

Inspection on Steering Knuckle

Check the steering knuckle

Check the steering knuckle with the dye penetration agent to

see whether the steering knuckle has a crack or not.

If the crack is found, the steering knuckle is required to be

changed.

Suspension System and Automobile Axle (Dr/2WD) 

 Front Wheel Hub and Steering Knuckle (Front Wheel Hub)

SA-15

Mount the steering knuckle

1.

Mount the steering knuckle

(a)

Support the lower arm of the steering knuckle with a jack.

(b)

Mount the steering knuckle on the lower ball stud and

screw on the nuts.

(c)

Press the upper arm to mount on the steering knuckle and

screw on the nuts.

(d)

Screw up the nuts of the upper ball stud according to the

specified torque.

Fastening torque

(100-120)N
m

(e)

Screw up the nuts of the lower ball stud according to the

specified torque.

Fastening torque

(98-118)N
m

(f)

Mount on the split pin between the upper and lower ball

studs.

2.

Mount the steering knuckle arm and the front brake shell;

(a)

Screw up the two bolts of M8X16.

Fastening torque

(25-28)N
m

(b)

Screw up the two bolts and groove nuts (M12X67) to the

specified torque.

Fastening torque

(98-118)N
m

(c)

Mount on the two split pins.

In case the pin hole in the ball stud are not in alignment with

the groove nut, adjust the fastening torque and the rotating

angle under the condition that satisfying the minimum torque,

so as to ensure the torque falls within the specified range, if

cannot, mount the split pin with the minimum torque beyond

the range

3.

Mount the front wheel hub and the front brake disc.

4.

Check the Alignment of Front Wheel.

(See SA-3)

Suspension System and Automobile Axle (Dr/2WD) 

 Front Wheel Hub and Steering Knuckle (Front Wheel Hub)

SA-16

 Front  suspension

Element figure

Suspension System and Automobile Axle (Dr/2WD) 

 Front Suspension

 



 

 !

 

torsion fork

transverse

stabilizer rod

lower ball stud

 Parts that cannot be reused after being used

    N

m

90

 110

110

 10

25

 28

23

 3

23

 3

torsion bar

226

 25

lower arm

80

 10

80

 10

142

 10

150

 10

96

 10

65

 70

Dr

pinch gasket of the upper arm shaft bush

rubber liner assembly for

the upper arm

guide lever

rocker arm

: specified torque

shock
absorber

SA-17

Ball stud

Inspection on Ball Stud

1.

Check the lower ball stud to see whether it is excessively

loose or not.

(a)

Prop up the front of the vehicle with jack and then support

it with the bracket.

(b)

Tread down the brake pedal after verifying that the front

wheel are in straight line.

(c)

Move the arm vertically to check the lower ball stud to see

whether the clearance is overlarge.

Max vertical clearance : 0.5mm

2.

Check the upper ball stud to see whether it is over-loose.

Move the wheel vertically to check whether the clearance of

the ball stud is over large.

3.

Check the rotating performance of ball stud

(a)

Take apart the ball stud.

(b)

Shake the ball stud several times forward and backward

before mounting on the nut, as shown in the drawing.

(c)

Rotate the nut continuously with a torsion meter, which

rotates the nut round per 2 to 4 seconds, and read the

reading of the torsion meter after the fifth round.

Fastening torque (running)

Lower ball stud: (0.1-4)N

m

Upper ball stud: (0.1-4)N

m

Disassembly of Ball Stud

1.

Tear down the steering knuckle.

(see the SA-14).

2.

Take apart the lower ball stud from the lower arm; and

3.

Take apart the upper ball stud from the upper arm.

Suspension System and Automobile Axle (Dr/2WD) 

 Front Suspension (Ball Stud)

SA-18

Mount of Ball Stud

1.

Mount the upper ball stud on the upper arm;

Fastening torque

26N
m

2.

Mount the lower ball stud on the lower arm;

Fastening torque

65N
m

3.

Mount on the steering knuckle

(see page SA-15)

Suspension System and Automobile Axle (Dr/2WD)

 Front Suspension (Ball Stud)

SA-19

Torsion Rod Spring

Dismantle of Torsion Rod Spring

1.

Use the jack to raise up the frame and support it with the

bracket.

2.

Take apart the locking nuts to measure the length of the

projecting end of the bolts, as shown in the drawing.

Remark: This measuring value can be referred when adjusting

the chassis ground clearance.

3.

Take apart the dust cover.

4.

Loosen the regulating nut until there is no tension on the

torsion rod spring.

5.

Take apart the torsion arm, torsion rod spring and the

torsion regulating arm.

(a)

Tear down the mounting nuts of the torsion rod arm.

(b)

Take apart the torsion regulating arm from the adjusting

bolt, the torsion regulating arm should be taken apart with

the torsion rod spring and the torsion rod arm together.

Dr SL SK SY

SJ

SF

Suspension System and Automobile Axle (Dr/2WD) 

 Front Suspension (Torsion Rod Spring)

SA-20

(f)

Screw up the adjustable nuts so that the protruding length

of the bolt is equal to that before tearing down.

(g)

Mount on the wheel and dismantle the bracket, bounce

the vehicle several times so as to make the suspension in

place.

(h)

Screw up the adjustable nut to regulate the ground

clearance.

2.

Tighten the locking nuts according to the specified torque.

Tighten torque 

(83 
 5)N
m

3.

Mount on the dust cover.

Mount of Torsion rod Spring

Notice: the torsion rod spring marked with 

L
(left) or

R
 (right), do not mount the springs at the incorrect

location.

1.

Mount the torsion rod spring, pedestal arm and torsion arm;

(a)

Coat the lithium base grease on the spline of torsion rod

spring.

(b)

Align the wide-teeth parts and then mount the pedestal

arm on the torsion rod spring.

(c)

Align the wide-teeth parts and then mount the torsion arm

on the torsion rod spring.

(d)

Mount the torsion rod spring on the side of torsion arm

and mount on the pedestal arm on the adjusting bolts.

(e)

Screw up the torsion arm nuts according to the specified

torque.

Fastening torque

(83 
)N
m

Suspension System and Automobile Axle (Dr/2WD)

 Front Suspension (Torsion Rod Spring)

front

SA-21

Lower Arm and Vibration Damper

Disassembly of Lower Arm And Vibration

Damper

1.

Take apart the torsion rod spring.

(see page SA-19)

2.

Take apart the ending part of the torsion rod

(a)

Take apart the split pin and nuts.

(b)

Take apart the ending part of drag rod.

3.

Take apart the vibration damper

4.

Take apart the transverse stabilizer rod from the lower

arm.

5.

Take apart the guide lever from the lower arm;

6.

Take apart the lower ball stud.

Suspension System and Automobile Axle (Dr/2WD) 

 Front Suspension (Lower Arm and Vibration Damper)

SA-22

7.

Take apart the lower arm

Tear down the nuts and lower arm.

Change of Lower Arm Shaft Bush

1.

Take down the shaft bush.

(a)

Shear off the rubber on shaft bush, as shown in

drawing.

(b)

Take apart the shaft bush.

2.

Mount the shaft bush.

Mount on the new shaft bush.

Mount of Lower Arm And Vibration

Damper

1.

Mount on the lower arm.

Adjust the lower arm in the unloaded stage when screw up the

axial bolts of the lower arm.

Fastening torque

(226 
 5)N
m

2.

Lower ball stud and lower arm connection

Assemble the lower ball stud and lower arm with three bolts.

Fastening torque

65N
m

Suspension System and Automobile Axle (Dr/2WD) 

 Front Suspension (Lower Arm and Vibration Damper)