SUSPENSION SYSTEM full report

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PURPOSE OF THE SUSPENSION SYSTEM
Support the weight of the vehicle.
Cushion bumps and holes in the road.
Maintain traction between the tires and the road.
Hold the wheels in alignment.
Travel over rough surface with a mini-mum of up-and-down body movement.
Suspension system assembly
Types of springs
Coil springs
Leaf springs
Torsion bar
Air springs
Controlling spring action
The ideal spring for automotive suspensi
on absorber road shock rapidly and then
returns to its normal position slowly. This is difficult to attain, however. A very flexi-
ble or soft spring allows too much move-
ment. A stiff or hard spring gives to rough a ride. A medium-soft spring and a shock absorber prevent spring override.
Purpose of shock absorbers…
A shock absorber is a tubular hydraulic device placed near each wheel to control or dampen spring oscillations. One end of the shock absorber attaches to the vehicle body or frame. The other end attaches to a moving suspension part such as the axle housing or a control arm. Movement of the spring then causes
the shock absorber to lengthen and short.
Types of shock absorber
Gas-filled shock absorber.
Lever type of shock absorber.
Spring-assisted shock absorber.
Adjustable shock absorber.
Air shock absorber.
Suspension service.  Complaint:- spring breakage
Cause
Overloading
Leaf spring with loose center
Defective shock absorber
Tight spring shackle
Remedies
Avoid overloading
Tighten
replace
Loosen, replace
Complain:- noise and vibration
Cause
Loose, unlubricated
Suspension part
Tight or dry shock absorber mounting bushing.
Remedies
Lubricate, tighten
Repair
Lubricate, install properly