Iveco Daily Euro 4. Manual — part 164
This angle makes it possible to keep the front wheels straight
when the vehicle is running straight and allows the wheels to
return spontaneously to running straight from the position
taken in the bend, as soon as the steering wheel is released by
the driver.
32359
32960
32961
Figure 4
Figure 5
Figure 6
The toe-in is negative if B is lower than A.
The toe-in is equal to zero if B is equal to A.
A
B
A
B
A
B
The wheel toe-in results from the difference between the
distances A and B (value expressed in mm) measured on the
horizontal axis of the rims, looking at the vehicle from the top.
In this way a light drive and a low tyre consumption is obtained.
The toe-in is positive if B is higher than A.
Wheel toe-in
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WHEEL GEOMETRY
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WHEEL GEOMETRY
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WHEEL GEOMETRY
SPECIFICATIONS AND DATA
MODELS
29L - 35S
35
(1)
35
(2)
.40 - 45. - 50.
60C - 65C
WHEEL GEOMETRY
-
-
-
-
Wheel camber angle
(vehicle at static load) (
± 20’)
0
o
± 20’
0º 30’
± 20’
1º
± 20’
Wheel caster angle
(vehicle at static load)
3
o
± 20’
1º 35’
± 20’
2º 30’
± 20’
Wheel toe-in
(vehicle at static load)
mm
2
± 1
2.5
± 1
b
Steering angle:
a
b
Internal a
47
o
30’
± 30’
43º
37º 7’
External b
39
o
± 30’
36º 30’
45º 6’
a
Stub axle king-pin camber
α
13.38
°
7
°
(1) Front suspension with transverse leaf spring
(2) Front suspension with torsion bar
TIGHTENING TORQUES
PART
TORQUE
PART
Nm
kgm
Nut fixing king-pin to the side tie rod of the steering box
15
÷ 20
1.5
÷ 2
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WHEEL GEOMETRY
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TOOL NO.
DESCRIPTION
99305354
Tool for checking wheel geometry
99347074
Puller for king-pins
Revi - February 2005
- Ensure the presence of spacers (1) between side
members (2) and tie rod (4) attachment mountings (3)
(with the exception of vehicles equipped with 5 mm thick
side members). If not, proceed as described on page 60.
Perform the geometry check using the tool 99305354.
Before proceeding with the checks, it is necessary to perform
a preliminary inspection at some of the vehicle members, which
can affect the geometry: if malfunctions are found, it is necessary
to eliminate them in order to avoid wrong detection.
The check to be performed are the following:
- tyre pressure;
- wheel hub bearing play
- play between steering tie rod pins and stub axle levers;
- shock absorber efficiency;
- unallowed deformation of the wheel rims.
33137
23311
Figure 7
Figure 8
Place the vehicle with the wheel in straight running position on
a level surface. Lift the rear of the vehicle and position the
board (3). Lower the vehicle, brake the rear wheels and apply
the hook (1) with the slide rule (2).
Lift the vehicle front part and position the floating wheels (1)
locking them with the locks (2).
25114
32818
Figure 9
Figure 10
Position the clutch jaw (1) fitted with fixing pins (2). Operating
the handgrip (3), lock the jaw on the wheel, making sure that
it is perfectly secured.
Figure 11
33137
Positioning jaws and projectors
Assemble the detecting unit (1) on the jaws (3) and constrain
it with the screw (2). Repeat the operation on the other
wheel.
1
2
3
1
2
3
The checks and possible operations on the wheel
geometry must be carried out with the vehicle at
static load. Make sure, periodically, that the optical
unit are perfectly calibrated.
NOTE
!
For modification of the characteristic angles of the
wheels, in vehicles with ESP, follow the calibrating
procedure of the steering angle sensor assembled in
the flywheel as described on page 63 of the Brake
Section.
WHEEL GEOMETRY
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