Iveco NEW DAILY, Instructions Manual

Page: 41 / 240

NEW DAILY
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CHASSIS INTERVENTIONS
CHASSIS INTERVENTIONS
2.4 WHEELBASE MODIFICATION
17
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Printed 603.95.789
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1 Ed. - Base 02/2014
Additional information
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Protect the surfaces against oxidation as in Paragraph "Added or modified parts" (
➠
Page 13).
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Restore the braking and electrical systems as according to Chapters 2.15 (
➠
Page 47) and 5.4 .
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Follow the instructions in Chapter 2.8 (
➠
Page 26) for interventions on the transmission.
Checking chassis stress
With regard to wheelbase elongation, aside from local reinforcement in the joint area of the side members, the Bodybuilder must
also account for reinforcements - along the entire contour of the wheelbase - until achieving area strength modulus equal to
IVECO values for the same wheelbase or for the next admissible greater length. In alternative, for cases allowed by local standards,
larger counter-frame profiles can be adopted.
The Bodybuilder must make sure that the stress limits prescribed by national standards are respected. These stresses must not
be greater than those or the original wheelbase frame, assuming an evenly distributed load and considering the frame as a beam
positioned in place of the suspension supports.
When an elongation is performed starting from the longest original wheelbase, the reinforcements adopted must account for
wheelbase elongation, type of chassis produced and vehicle use.
Cross members
The need to apply one or more cross members is subordinate:
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to the entity of lengthening;
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to the position of the transmission support;
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to the welding area;
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to the points where forces caused by superstructures are exerted;
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to the vehicle's conditions of use.
Any additional cross members must have the same characteristics of those already mounted on the frame (bending and torsion
strength, material quality, connection to side members, etc.).
Figure 6 shows an example.
In any case an additional crossbar must be installed for elongations exceeding 600 mm.
The distance between the two cross members must generally be within 1000 ÷ 1200 mm.
The minimum distance between the cross members, especially for "heavy duty use" must not be less than 600 mm; this restriction
excluded "lightweight" cross member supporting the transmission and shock absorbers.