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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