Iveco EuroCargo (12 to 26 t). Manual — part 148
E
URO
C
ARGO
T
ECTOR
12-26 t
44
FRONT AND REAR PNEUMATIC SUSPENSIONS
Base - February 2003
VEHICLE MAIN COMPONENT ARRANGEMENT
60
SPECIFICATIONS AND DATA
61
. . . . . . . . . . . . .
DIAGNOSTICS
62
. . . . . . . . . . . . . . . . . . . . . . . . . .
TIGHTENING TORQUES
64
. . . . . . . . . . . . . . . . .
TOOLS
65
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAIN PNEUMATIC SYSTEM
COMPONENTS
66
. . . . . . . . . . . . . . . . . . . . . .
- Controlled-pressure valve
66
. . . . . . . . . . . . . . . .
- Low pressure indicator
66
. . . . . . . . . . . . . . . . . .
- Check valve
66
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Electro-pneumatic front axle distributor for
4 x 2 FP vehicles
66
. . . . . . . . . . . . . . . . . . . . . . .
- Operation
67
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Front axle lifting
67
. . . . . . . . . . . . . . . . . . . . . . . .
- Front axle lowering
67
. . . . . . . . . . . . . . . . . . . . .
- Self-leveling
67
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Electro-pneumatic rear axle distributor
for 4 x 2 P/FP vehicles
68
. . . . . . . . . . . . . . . . . . .
- Operation
68
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Rear axle lifting
68
. . . . . . . . . . . . . . . . . . . . . . . . .
- Rear axle lowering
68
. . . . . . . . . . . . . . . . . . . . . .
- Self-leveling
68
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Level sensor
69
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Air springs
69
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- ECU
69
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR PNEUMATIC SUSPENSIONS REMOVAL-
REFITTING
70
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removal
70
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
70
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR SHOCK ABSORBERS
71
. . . . . . . . . . . . . . . .
- Removal
71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page
REAR SWAY BAR
71
. . . . . . . . . . . . . . . . . . . . . . . .
- Removal
71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR AIR SPRINGS
71
. . . . . . . . . . . . . . . . . . . . . .
- Removal
71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
71
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT SHOCK ABSORBERS
72
. . . . . . . . . . . . . .
- Removal
72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT AIR SPRINGS
72
. . . . . . . . . . . . . . . . . . . . .
- Removal
72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
72
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT PNEUMATIC SUSPENSION
REMOVAL-REFITTING
73
. . . . . . . . . . . . . . . . . .
- Removal
73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT SWAY BAR
73
. . . . . . . . . . . . . . . . . . . . . .
- Removal
73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
73
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR PNEUMATIC SUSPENSION
REMOVAL-REFITTING
74
. . . . . . . . . . . . . . . . . .
- Removal
74
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
74
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR AIR SPRINGS
75
. . . . . . . . . . . . . . . . . . . . . .
- Removal
75
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
75
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR SHOCK ABSORBERS
75
. . . . . . . . . . . . . . . .
- Removal
75
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
75
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR SWAY BAR
76
. . . . . . . . . . . . . . . . . . . . . . . .
- Removal
76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
76
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pneumatic
suspensions
are
very
flexible
and offer
considerable vibration damping features, regardless of vehicle
load. By effect of the system self-adjusting features, the
”chassis-road surface” distance is kept constant. A specific
button can be used to vary the ”chassis-road surface”
distance, and consequently the vehicle load surface, in
pneumatic suspension systems.
In addition to the advantages of pneumatic suspensions, the
ECAS system ensures:
- considerable air consumption reduction;
- prompt response to adjustments;
- system simplicity;
- high safety;
- complete system diagnostics.
The ECAS (Electronically Controlled Air Suspension)
system automatically controls the nominal vehicle pneumatic
suspension level.
All operations depend on certain working conditions and
respective safety of the connected systems.
The ECAS ECU automatically controls the level (distance
from the road surface) of the chassis by means of the real
values provided by sensors, comparing them to the nominal
values stored in the memory.
In the event of distancing or trim changes, the ECU controls
the electrical-pneumatic units to correct the real level with
respect to the nominal values previously set or stored by the
driver.
The system has a remote control for lifting/lowering and
levelling the chassis. The system can be worked with the
vehicle either stationary or moving.
In addition to lifting, lowering and levelling, the system can be
used to store other chassis trim levels, which can be recalled
when required.
PNEUMATIC SUSPENSION ASSEMBLIES
!
Models equipped with mixed suspension systems (front mechanical suspensions and rear pneumatic suspensions) fit
the front suspension of the corresponding mechanical suspension models.
Figure 1
Dimension x = 60 mm
FRONT PNEUMATIC SUSPENSION ASSEMBLY
(Models 120E..FP/130E..FP/150E..FP)
72530
FRONT PNEUMATIC SUSPENSION
E
URO
C
ARGO
T
ECTOR
12-26 t
FRONT AND REAR PNEUMATIC SUSPENSIONS
45
Base - February 2003
E
URO
C
ARGO
T
ECTOR
12-26 t
46
FRONT AND REAR PNEUMATIC SUSPENSIONS
Base - February 2003
mm
Parabolic leaf springs
N
o
2
L
Main leaf and second leaf length
(measured at eye centre)
1739
± 3
S
Leaf thickness
1
st
leaf (measured in the middle)
2
nd
leaf (measured in the middle)
30
23
S
Thickness between leaves
3
L
Width of leaves
80
± 0.5
NEW SPRING CHECK DATA:
Static load deflection
Static load flexibility
54
9.818 mm/KN
D
Main leaf eye internal diameter
(bushing housing)
55.5 + 0.1
D
d
D = bushing external diameter
57.3
+0.6
-0.2
d = bushing internal diameter
20.2
+0.3
-0
Figure 2
SHOCK ABSORBER ASSEMBLY DIAGRAM
(Models 120E..FP/130E..FP/150E..FP)
72792
E
URO
C
ARGO
T
ECTOR
12-26 t
FRONT AND REAR PNEUMATIC SUSPENSIONS
47
Base - February 2003
SPECIFICATIONS AND DATA
SHOCK ABSORBERS
FICHTEL & SACHS
MODELS: 120E..FP/130E..FP
150E..FP
Length between the ends
Open (mm)
Closed (mm)
Stroke (mm)
588
± 3
358
± 3
230
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