Iveco EuroCargo (12 to 26 t). Manual

Before checking, it is necessary to make a preliminary inves-
tigation of some vehicle elements which can affect set up. If
any fault is detected, it is important to eliminate it in order to
avoid wrong measurements.
The checks to be made are the following:

- tyre pressure;

- wheel hub bearing clearance;

- clearance between track rod pins and levers on steering

knuckles;

- shock-absorber efficiency;

- wheel rims must not be dramatically distorted.

Make wheel set up check using equipment 99305354.

FRONT WHEEL SET UP

Checks and possible adjustments of wheel set up
must be made with the vehicle having static load.

By and then, check perfect calibration of optical
units.

Figure 10

Place the vehicle with the wheels in upright direction on a flat
surface. Lift the vehicle’s rear part and place the platforms
under the wheels (3). Lower the vehicle, brake the rear
wheels and set the hook (1) with the ruler (2).

32973

Figure 11

Figure 12

Lift the vehicle’s front part and place the swinging plates (1)
under the wheels, clamping them with the appropriate locks
(2).

32974

32975

Place on the wheel rim the self-centring clip (2) fitted with the
right lock pins (1). Use the handle (3) to clamp the clip on
wheel, checking that the wheel itself is well fixed.

Figure 13

Set the detecting system (3) on the clips (1) and clamp it with
the screw (2). Repeat the same operations on the other
wheel.

32976

Setting of clips and headlights

URO

ARGO

ECTOR

12-26 t

FRONT AXLES 5842/5 - 5851/5

Base - February 2003

Figure 14

Connect detectors’ plugs to the transformer and switch it on.
Release the detector’s lock screw and lift the lens cover. Push
the button “off centre” (3) for at least two seconds, five lines
will be displayed on the digital (1) indicator.
Slowly rotate the wheel by hand and project the light signal on
the corresponding ruler scale (5).
Detect and write down the minimum and maximum excursion
of the light signal: e.g. 12 and 8.
Calculate the excursion’s average value: 12 + 8 = 20 : 2 = 10
and place the wheel according to the calculated average value,
marking the new position.
Push again the button “off centre” (3) until the wheel inclina-
tion led (2) is switched on and on the digital indicator a fake
value is displayed.
Repeat the same operations on the other wheel.

32977

Be careful that the laser ray does not hit people’s
eyes: it would severely harm their sight.

Electronic compensation for rim
maladjustment

Figure 15

Push the brake pedal and leave it in this position using the ap-
propriate tool (1) set against the seat, thus keeping the vehicle
braked during the whole measurement.

32978

Figure 16

Figure 17

Balance detectors (3) by using the spirit level (1) and clamp
them in this position by the screw (2).
Move the rulers (4) until they are hit by the light signal released
by the detector and write the indicated values.

32979

If the values are different, turn the wheels until the light signal
indexes reach two equal values (A) and the exact average
value resulting from the two previous detections. In such a way
it is possible to obtain a perfect wheel alignment.

13952

Wheel alignment

Lower the vehicle so that the wheels, being in the marked
position, touch completely the centre of the swinging plates
and release the latter from the related bases by removing the
pins (4).

URO

ARGO

ECTOR

12-26 t

FRONT AXLES 5842/5 - 5851/5

Base - February 2003

Figure 18

Figure 19

Check of wheel inclination (Camber)

32980

Still having detectors perfectly balanced and the wheels com-
pletely aligned, use a lever (1) to move the lens cover.
Move the lever (2) and point the light signal index to the
ruler’s graph scale (3) corresponding to the rim’s diameter.
Repeat the same operations with the opposite detector and
read the toe-in values expressed in millimetres on the graph
scales.
The algebraic sum of the two detected values must amount
to: 0.5

÷ 1.5 mm with static load.

If the front wheels are aligned with the rear ones and the de-
tectors are balanced, push the wheel inclination button (3) and
the led (2) will be switched on. The digital indicator (1) will give
the value of the angle of inclination which must be 1

°.

32981

Toe-in adjustment is made affecting the cross tie
rod.

Figure 20

Figure 21

The wheels’ angle of inclination is a fixed value which
cannot be adjusted.
Therefore, if a different value is detected, remove
and dismantle the axle, make the appropriate inves-
tigations and possible replacements.

Check upright angle of inclination (King Pin)
and clearance angle (Caster)

Still having the front wheels aligned with the rear ones, loose
knurled knobs (2) and set to zero the graduated sector (3) on
the swinging plate’s index (1).

32982

Turn the wheels inwards by 20

° and push twice the upright

inclination button (3), the led (2) will be switched on and nine
horizontal lines will appear on the digital indicator (1).

32983

URO

ARGO

ECTOR

12-26 t

FRONT AXLES 5842/5 - 5851/5

Base - February 2003

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Iveco EuroCargo (12 to 26 t). Manual - part 127