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CHASSIS MODIFICATIONS
D
AILY 4x4
Base - May 2007 Print 603.93.761
Changing the Size of the Tyres
Bleed air from the hydraulic braking system using MODUS or E.A.SY. on vehicles with ABS/ABD/EBD
On vehicles equipped with ABS/ABD/EBD systems, the traditional, manual bleeding operation described above may not be
sufficient.Thepresenceofaircausesthebrakepedalstroketobelonger, with possible uncharacteristic operation of the system.
Manual operations must be carried out, wh ich will be driven by the program in ” MODUS”or “E.A.SY.”.
This program makes it possible to perform full drain (primary circ uit and sec ondary circuit of the modulator) under item ”System
filling / emptying”.
An operator starts the repeated operation of the modulator solenoid valves and t he pump and at the same time, by operating the
brake pedal and releasing the drain screw on the calliper (according to the manual procedure) air bubbles still present in the
concerned part of the system will be blown out.
Then follow th e instructions that appear each time on the screen, taking care not to exceed the solenoid valve and pump o perating
time, so as t o avoid component overheati ng.
If this occu rs the system will be deactivated, and you will have to wait for the established time in order to let the sy stem cool down
before the operation can be start ed again.
!
In the event that the modulator is replaced (the modulator is supplied by the Spare Parts Department
already filled with the brake fluid) you only need to follow the manual drain procedure, taking care not
to empty the unit and not cause its pump and solenoid valve to cycle prior to full charging.
The ABS, ABD, EBD modulating devices, placed on the chassis in the engine compartment, must Not be moved.
When modifying the wheelbase, the electric cables between the rear axle sensors and the control unit must be adapted using new
cables or extensions with the correct connectors. The brake piping downstream the modulator must be adapted too.
Warning
Great care must be taken, when carrying out the work, to make sure the correct connection of the pipes are made to each wheel.
After every modification carry out the necessary checks and tests for correct operation at the Authorized Workshops equipped
with the specific equipment.
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