Iveco DAILY M.Y. 2012, Body Builder Instructions

Page: 44 / 252

2-18
CHASSIS MODIFICATIONS D
AILY
Base — 02/2012 Printed 603.95.241
Modification of the wheelbase
Modification of the wheelbase
2.4 Modification of the wheelbase
2.4.1 General information
!
Any change to the wheelbase that involves the electrical circuits and/or the relocation of the
electrical/electronic components requires approval and must be performed in compliance with the
instructions in chapter 5.4.
In general, the wheelbase must be changed by working on a standard production wheelbase that is as close as possible to the
one to be created.
If permitted by the dimension of the superstructure, it is preferable to create wheelbases that are equal to those foreseen by normal
production, as this makes it possible to use original propeller shafts and predefined cross member positions.
Please note that if you want to create a size that is smaller than the approved minimum or greater than the approved maximum,
authorisation must be requested from IVECO.
!
For vehicles equipped with an ESP system, see paragraph 2.15.3.
2.4.2 Authorisation
The wheelbase may be changed without specific IVECO approval only when:
- implementing one of the lengths foreseen in the catalogue for the type of vehicle to be transformed;
- replicating the structure (side member section; number, type and positions of the cross members), the circuits and systems on
the standard chassis corresponding to this length.
If both these conditions do not exist simultaneously, with which the diagram of the transformed chassis is identical to the diagram
of an original chassis, the change must be submitted for approval.
The workshop that makes the transformation must provide sufficient guarantees from a technological and control point of view
(qualified personnel, suitable operating processes, etc.).
The work must be carried out in compliance with these directives, in accordance with suitable regulations and adaptations, as well
as proper precautions (e.g. check the need to reset the control unit parameters, positioning of the exhaust pipe, compliance with
the minimum tare on the rear axle, etc.) foreseen for corresponding original wheelbases.
2.4.3 Influence on steering
In general, lengthening the wheelbase has a negative influence on steering characteristics.
When required by regulations, do not exceed the limits required for the swing-out radius, the forces on the steering wheel and the
relative inscribability times (e.g. ECE Regulation or EC Directive in force).
Table 2.10 specifies the maximum wheelbase lengthening values possible with standard steering, the maximum load permitted on
the front axle and the required tyres for the vehicle.
If longer wheelbases are necessary, specific approval must be requested and measures must be adopted to improve steering, such
as the reduction of the maximum load on the front axle or the creation of an offset with lower values.
Also the use of a supplementary pump must be authorised, whereas for the subsequent installation, a specialised company must
be used.