Great Wall service chassis and body Manual — part 27
SA-4
Suspension System and Automobile Axle
Alignment of Front Wheel (Dr SL SK SY SJ)
5.
Adjustment for inner tilt angle of kingpin, outer tilt angle
of front wheel and back tilt angle of kingpin
Item
Inner tilt
angle of
kingpin
Outer tilt
angle of
front
wheel
Applicable vehicle type
Dr SL SK SY
SJ
M e c h a n i c
steering
Dr SL SK SY
Power
steering
Dr
SL SK SY
SJ
Back tilt
angle of
kingpin
M e c h a n i c
steering
Dr SL SK SY
Power steer-
ing
Dr SL SK SY
SJ
9
30 45
14
52
0
30 20
0
10 10
0
20 10
0
30 15
2
45 15
3
15
Location parameter
4.
Adjust the wheel angle
Take apart the limit bolts of the steering knuckle to check the
steering angle A of inner wheel.
Inner wheel steering angle
Dr SL SK SY
( 3640)
SJ
( 3234)
Remark: The wheel should not contact the body or brake hose
when the steering wheel reaches the limit position.
In case the steering angle of inner wheel doesnít conform to the
standard value, adjust the wheel angle through adjusting the
limit bolts of the steering knuckle.
Fastening torque
(90 0)Nm(SJ)
If the wheel angle fails to be adjusted within the standard value,
change the weary or damaged parts of steering system.
If the tilt angle fails to fall within the specified values, make an
adjustment through adding or reducing the gaskets on the
location of upper arm.
Gasket thickness: 3.0, 2.0 and 1.0mm
Once the gasket thickness increases by 1mm, the outer tilt
angle of wheel will change by 7', while the back tilt angle of
kingpin will change 20'.
After the wheel outer tilt angle and the back tilt angle of kingpin
are adjusted, if the inner tilt angle of kingpin still fails to the
specified value, check the steering knuckle or front wheel to
see whether they are bending or loose.
1
50
-20
adjusting bolt
outer tilt
angle of
front wheel
inner tilt angle of kingpin
back tilt angle of
kingpin
front
A
B
A
B
HPM
SA-5
7.
Check the sliding measuring situation.
Check the sliding situation with the sliding measuring tester.
Sliding measuring value:
.5m/km
push forward the vehicle;
forward
A=B
B
A
6.
Wheel toe-in adjustment
(a)
Verify that each wheel has been located forward in a line.
(b)
Mark the tire center at the bearing height on the tread of
left and right tire, and measure the distance between the
marks on left and right treads.
(c)
Push forward the vehicle until the mark on the back tread
of tire moves to the front.
Remark: the toe-in measurement should be conducted from the
same spot at the same height.
(d)
Measure the distance between the two marks on the front
of two treads.
Toe-in value: (0-2)mm
(e)
Loosen the clamping bolts of connecting pipe.
(f)
Adjust the toe-in angle through the approach according to
which rotate the left and right drag rod tube by a same
angle.
Remark: check the lengths of the two drag rods to see whether
the two rods are same in length.
Length error of the left and right drag rod should not
be larger than 2.0mm.
(g)
Tighten the clamping bolts.
Fastening torque
(20 ) Nm
(h)
Locate the split pin well.
Suspension System and Automobile Axle
Alignment of Front Wheel (Dr SL SK SY SJ)
SA-6
Suspension System and Automobile Axle
Alignment of Front Wheel Alignment of Front Wheel (SF)
Alignment of Front Wheel
(SF)
1.
The following items should be checked to remove the
troubles.
(a)
Check the tire abrasion and the air inflation to see it is
suitable or not.
Tire inflation pressure: (250
0)kPa
(b)
Check the front wheel bearing to see whether it is loose.
(c)
Check the front suspension to see whether it is loose.
(d)
Check the steering driving device to see whether it is
loose, and
(e)
Check the front vibration through elastic force test to see
whether it is normal in performance.
2.
Height adjustment of vehicle
Adjust the vehicle height to the standard value so as to make
the Alignment of Front Wheel inspection.
A-B-58 5mm
A: The height of steering knuckle shaft center.
B: The center height of the adjusting cam bolt at front end
The standard value for the unloaded height is: the
difference of the center height of drive shaft climax and
the front adjusting cam bolt is 58.5mm.
3.
Mount on the four wheel locating device
This approach should be conducted according to the detailed
instruction of the equipment manufacturer.
4.
Adjust the outer tilt angle of front wheel and the back tilt
angle of kingpin
The outer tilt angle of front wheel: 0
5' 0'
The back tilt angle of kingpin: 2
0' 0'
Outer inclination of front wheel:
B
A
the outer tilt angle of
front wheel
the back tilt angle
of kingpin
front
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
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