Iveco daily euro 4 Repair Manual page 737

D E
AILY URO 4
DESCRIPTION
The rear suspension is composed of:
- two leaf springs which, according to the vehicle, can be of
a semi-elliptic type with double flexibility or of a parabolic
type with simple flexibility.;
- two stop bumpers;
- two hydraulic double acting shock absorbers;
- stabilizer bar.
The semi-elliptic leaf spring is very stiff because all leaves
forming the leaf spring have the same thickness from one end
to the other.
Moreover, leaves are placed one against the other and this
causes a great internal friction which limits the movements of
the leaf spring.
Figure 82
Print 603.93.651
The parabolic leaf spring is formed by leaves which have a
greater thickness in the middle than at the two ends.
Leaves are spaced by means of shims and this reduces much
of the internal friction.
The low internal friction and the particular form of the leaves
make the parabolic leaf spring more "soft", this makes driving
easier.
Hydraulic double-acting telescopic shock absorbers, hinder
the wheel movement both upwards and downwards, allowing
a great driving stability.
The stabilizer bar must keep the geometry between the wheel
axle and the chassis and arrange the load evenly over the
wheels on the same axle.
REAR SUSPENSION
REAR MECHANICAL SUSPENSIONS
Base - March 2006
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