Iveco DAILY M.Y. 2012, Body Builder Instructions

Page: 59 / 252

CHASSIS MODIFICATIONS
2-33
D
AILY
Printed 603.95.241 Base — 02/2012
Application of a supplementary axle
When the lengthening of the wheelbase is considerable it may be necessary to apply a supplementary intermediate section, as shown
in Figure 2.16. In this case, make sure that the same camber is created between the engine-gearbox axle, the second intermediate
shaft and the rear axle casing axle in a static load condition of the vehicle.
Figure 2.16
173261
1.Engine, clutch, gearbox axis - 2. Intermediate shaft - 3. Intermediate shaft support - 4. Articulated shaft (sliding) -
5. Articulated shaft (fixed part) - 6. Rear axle casing camber (static load) - 7. Rear axle casing camber (max compression) -
8. Rear axle casing camber (unloaded) - 9. Gearbox, sliding articulated shaft and rear axle casing axis must have the same
camber
The elastic supports must be applied using support plates with a thickness of at least 5 mm (see Figure 2.17), connected to the
cross members with characteristics similar to what is foreseen by IVECO.
When shortening the wheelbase, the intermediate shafts should be disassembled when the length of the articulated shaft is less than
approx. 600 mm.
Figure 2.17
1. Intermediate shaft - 2. Support plate - 3. Base plate - 4. Intermediate shaft support
102426
The considerations made up to this point also apply to vehicles with a separate gearbox.
Furthermore, for these it is usually not possible to shorten the wheelbase beyond the shortest value foreseen standard (e.g.: tilting).
It is recommended to use original IVECO transmissions; if this is not possible crude steel pipes can be used that have a yield point
no less than 420 N/mm
2
(42 kg/mm
2
).
Changes to the universal joints are not permitted.
For each change made to the transmission, or part of it, accurate dynamic balancing must be performed subsequently on each of
the modified sections.
!
As the transmission represents an important component for the purpose of safe vehicle operation,
attention must be placed on the requirement that each change made to it must provide a maximum
guarantee of safe behaviour. Therefore, these changes should only be made by highly specialised
companies that have been qualified by the transmission manufacturer.