Iveco EuroCargo (12 to 26 t). Manual — part 153
E
URO
C
ARGO
T
ECTOR
12-26 t
64
FRONT AND REAR PNEUMATIC SUSPENSIONS
Base - February 2003
PART
TORQUE
Nm
(kgm)
Front pneumatic suspension (Models 120E..FP/130E..FP/150E..FP)
Rebound fastening screw nut
62.5
± 6.5
(6.25
± 0.65)
Spring brackets fastening screw nut
463.5
± 46.5
(46.35
± 4.65)
Spring to front mount fastening screw nut
336.5
± 33.5
(33.65
± 3.35
Spring to pad fastening screw nut
336.5
± 33.5
(33.65
± 3.35)
Rear pneumatic suspension (Models 110EL..P/120EL..P)
Front support to chassis fastening screw
250
÷ 306
(25
÷ 30.6)
Suspension arm to front mount fastening screw nut
435
÷ 530
(43.5
÷ 53)
Suspension arm to axle box fastening screw nut
819
÷ 1002
(81.9
÷ 100.2)
Upper and lower shock absorber fastening screw nut
119
÷ 146
(11.9
÷ 14.6)
* Axle box fastening U-bolt nut
425
÷ 440
(42.5
÷ 44)
Sway bar fastening nut
794
÷ 971
(79.4
÷ 97.1)
Panhard bar fastening screw nut
40
÷ 54
(4
÷ 5.4)
Air spring lower fastening nut
435
÷ 530
(43.5
÷ 53)
Other flanged head fasteners with waxed nut:
M12x1,75 R80
M12x1,75 R100
56
÷ 69
83
÷ 101
(5.6
÷ 6.9)
(8.3
÷ 10.1)
*
U-bolts must be fastened diagonally in several times to ensure contact between adapter and axle before reaching
maximum specified torque.
Rear pneumatic suspension (Models: 120E..P-FP/130E..P-FP/150E..P-FP)
Reaction triangle to chassis fastening screw
352.5
± 32.5
(35.25
± 3.25)
Longitudinal arm bar fastening screw nut
418
± 42
(41.8
± 4.2)
Air spring support arm to air spring fastening screw nut
90
± 10
(9
± 1)
Air spring to chassis fastening screw nut
92
± 9
(9.2
± 0.9)
Nut for screw fastening the air-operated spring support arm to the rear axle.
545
± 55
(54.5
± 5.4)
E
URO
C
ARGO
T
ECTOR
12-26 t
FRONT AND REAR PNEUMATIC SUSPENSIONS
65
Base - February 2003
TORQUE
Nm
(kgm)
Rear pneumatic suspension (Models: 180E..P)
Axle to air spring support arm fastening screw nut
845
170
(84.5
17)
Reaction triangle to axle fastening screw
290
30
(29
3)
Reaction bar fastening screw nut
418
42
(42.6
4.3)
Support arm to air spring fastening screw nut
100
10
(10
1)
Air spring to chassis fastening screw nut
92
9
(9.4
0.9)
Sway bar to spring support arm fastening pin nut
373.5
37.5
(38
3.8)
Sway bar support to chassis fastening screw nut (M16)
226.5
22.5
(23
2.3)
Sway bar support to chassis fastening screw nut (M12)
92
9
(9.4
0.9)
Connecting rod to chassis support fastening pin nut
359
36
(36.6
3.7)
Upper shock absorber fastening pin nut
118
12
(11.8
1.2)
Lower shock absorber fastening pin nut
187.5
18.5 (18.7 1.9)
Reaction triangle to chassis support fastening screw
418
42
(42.6
4.3)
TOOLS
TOOL No.
DESCRIPTION
99305117
Pneumatic circuit check instruments
0
2
46
8 10
12
14
16
0
2
46
810
12
14
16
0
2
46
810
12
14
16
0
2
46
810
12
14
16
810
12
14
16
99321024
Wheel removal-refitting hydraulic trolley
99387050
Polyamide tube cutter
20437
Figure 16
Controlled-pressure valve
The limited return valve has two functions:
- It cuts off the reservoir compressed air flow supply when
the pressure drops under a certain value (calibrated) due
to failures or excessive consumption.
- It supplies the reservoirs as soon as the braking system
reaches a value ensuring perfect brake application.
Low pressure indicator
This pressure switch is located near the utility air reservoir on
the pneumatic suspension delivery tube.
52723
Figure 17
Figure 18
33987
This valve allows the passage of compressed air in the direc-
tion of the arrow on the valve body, preventing it from flow-
ing back.
2
1
793319
Check valve
78802
This components consists of a control solenoid valve and
two pneumatic distributors for managing both sides of the
axle. A calibrated hole is provided between the two outputs
to prevent pressure leakage between air springs and
consequent internal connection axle stabilisation.
The electro-pneumatic distributor is connected to the
system by means of a three-pole connector.
Figure 19
Electro-pneumatic front axle distributor for
4 x 2 FP vehicles
E
URO
C
ARGO
T
ECTOR
12-26 t
66
FRONT AND REAR PNEUMATIC SUSPENSIONS
Base - February 2003
78804
Operation
Front axle lifting
The ECU energises the solenoid valve supplying the
distributors via the air duct (11) from the reservoir and
energising the axle electro-pneumatic distributor solenoid
valve ”A” (Figure 24) to supply the first distributor, closes the
relief to atmosphere (3, Figure 24) and opens the air intake
(11, Figure 24) from the reservoir.
In this way, the air from duct (21, Figure 24) to duct (21)
supplies the axle air springs via ducts (22 and 23).
Front axle lowering
In this case, the ECU energises the solenoid valve supplying
the distributor, allowing the air to be relieved from the air
springs from duct (21) to duct (21, Figure 24) and opens the
air input (3, Figure 24), which is open because the axle
electro-pneumatic solenoid valve ”A”
(Figure 24) is
de-energised.
Self-leveling
The ECU, according to the position of the level sensors,
controls the front axle electro-pneumatic distributor
solenoid valve and the rear axle electro-pneumatic
distributor solenoid valves accordingly for lifting or lowering
in order to reach vehicle levelling or stored positions ”M1”
or ”M2”.
Figure 20
78803
Pneumatic connections
11 - from air reservoir
21 - from axle electro-pneumatic distributor
22 - to air spring on right-hand side
23 - to air spring on left-hand side
Electrical connections
6.1 - Solenoid valve power positive
6.2 - Negative
6.4 - Free
Figure 21
E
URO
C
ARGO
T
ECTOR
12-26 t
FRONT AND REAR PNEUMATIC SUSPENSIONS
67
Base - February 2003
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