8
SUSPENSION
I.
FRONT INDEPENDENT SUSPENSION
1.
CONSTRUCTION DETAILS
(Fig. 1)
In this independent suspension arrangement
each wheel has a separate suspension unit,
wheels are connected to the chassis in such a
manner that the rise and fall of one wheel has no
direct effect on the other. As a result, each wheel
has the ability to confirm to maintain a level
position regardless of the action of other front
wheel. In addition, independent front suspension
improves the ride and handling qualities of the
vehicle.
The upper wishbone is mounted on the frame at
its open end through a spindle and pivoted
bushes. The closed end of the top wishbone is
connected to the top of the stub axle by a ball
joint.
The lower wishbone is pivoted to chassis frame.
Front end of torsion bar is connected to lower
wishbone with bracket and rear end of torsion
bar is connected to an adjustment lever, mounted
at cross member. Ball joint on lower wishbone is
connected to bottom end of stub axle.
Antiroll bar middle portion is connected to
brackets onRHand LH longmember with bearing
blocks (rubber) and clamps. Antiroll bar ends are
connected to brackets on lower wishbone with
bolts, cups, sleeves and rubber bushes.
As the wheel moves up and down, the two control
arms (upper wishbone and lower wishbone) pivot
up and down, as torsional torque of preloaded
torsion bar gives springing actions. The shock
absorber located between frame and lower
wishbone, dampens the springing oscillations.
2.
SPECIFICATIONSANDRECOMMENDATIONS
2A. TECHNICAL SPECIFICATIONS
Type : Double wishbone type with torsion bar
springs double acting hydraulic shocks absorbers
and antiroll bar.
2B. REPAIR/ADJUSTMENT DATA
Shock absorber data
Extended length
370 + 4 mm
(eye centre to middle of cups)
Collapsed length
264 + 3 mm
(eye centre to middle of cups)
Stroke
106 + 7 mm
Front wheel alignment data
Camber angle
0
0
+ 30'
Castor angle
3
0
+ 30'
Toe-in
2-5 mm
Wheel lock angle (outer)
26
0
- 1
0
LH/RH variation in castor
45'
2C. LUBRICANTS
Antiroll bar contact surface in bearing block to
be lubricated with Silicon Molycote 33 (medium)
grease.
Torsion bar splines to be lubricated with 3%
MOS2 grease.
2D. TIGHTENINGTORQUES
(All figures are in mkg)
Top ball joint
12-15
(at upper wishbone castle nut)
Bottom ball joint
12-15
(at lower wishbone castle nut)
Upper wishbone spindle attachment
18
to chassis, M14x1.5 bolt/nut
M12 Screws connecting washers,
8-9
pivot bush to spindle
Lower wishbone mounting pin nyloc nut 14-16
Bolts connecting top ball joint to
3
upper/lower wishbone
Antiroll bar bearing block clamp
4.9
mounting bolts
Wheel Nuts
12 to 15
Bolts connecting lower
ball joint to lower wishbone
M10 Screws
6.5
M12 Bolts
9.7




