Iveco EuroCargo (12 to 26 t). Manual

Flexible pipings replacement with threaded
fittings

- Carry out abutment ring reflanging upon assembly on the

vehicle or work bench on a fitting.

- The exerted pressure and the final distance from front

pressure ring edge to reinforcement bush edge must be
those mentioned in the table below.

In case of a bad assembly, use the pipe after having
extracted bush and abutment ring.

Rotating tool (3) around piping (2), screw (1) is
loosened. In order to completely cut the piping, it is
then necessary to tighten screw (1) when it loosening.

Double-layered

- Use homologated pipes only;
- Check the spare pipe status, on which no cracks, cuts or

nickings must be detected;

- Cut the pipe at 90

° with respect to the axis through a

suitable pipe-cutting pliers 99387050 at the necessary
length;

Insert on the pipe in the following order:

- nut (3), pressure ring (2) (its greater thickness must be

facing nut (3) and reinforcement bush (1);

- the bush must be in perfect conditions (it must not have

either distortions or hammering traces);

Strictly comply with the following instructions:

10397

10398

10399

- Key the reinforcement bush with tool 99372219

guaranteeing the contact between its flange and the pipe
end;

- make sure that the pipe end penetrates into the suitable

rake groove obtained in the flange;

1. Reinforcement bush - 2. Pressure ring - 3. Nut - 4. Fitting -

5. Pipe - h. Distance between bush edge and ring edge

(see table).

After having cut the piping, burr and shape the end as previously
described.

REINFORCEMENT BUSH ASSEMBLY
A = CORRECT ASSEMBLY
B = WRONG ASSEMBLY

Pipe

Distance between bush

edge and ring

mm (*)

Assembly

pressure

N/mm

6 x 1

8 x 1

10 x 1.5

12 x 1.6

16 x 2.34

1 to 1.5

2 to 2.5

3 to 3.5

0.040

0.050

0.060

Insert the thereby-prepared piping end into the fitting body till
the reinforcement bush flange rests within the suitable seat:

- For closing the nut on the fitting, initially screw it manually

and then complete the tightening with a suitable box
wrench inserted into the dynamometric wrench, to be
calibrated according to the required tightening torque.

Single-layered

(*) See reference h, Figure 14.

Figure 12

Figure 13

Figure 14

URO

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12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

- Protect the pipes in case of grinding or welding operations

on the vehicle; for such purpose, an adhesive plate is applied
in the cabin and shows the precautions to be observed with
utmost care to avoid damages.

Flexible

pipings

replacement

with

quick

connection fittings

- Moreover, when crossing chassis longitudinal members or

metallic parts, check that passage holes are coated with
rubber fairlead rings and that these latter ones are in good
conditions;

- Avoid that the pipe slides along cutting edges that would

risk to create nickings;

- Having to fix the piping onto already existing ducts, take

into account the supplementary heat to which it can be
subjected (hydraulic power steering duct): in such case, the
piping must be protected with guards;

- At the end of the connection, verify that the piping,

between keying and securing, is not stretched, but must be
slightly loosened to recover higher temperature variations,
particularly for short lengths;

- Before assembling, accurately clean the pipings by blowing

compressed air in order to guarantee system operation;

For better safety and work comfortability, it is
advisable to detach the pipings during such operations.

At the end of the assembly, check the perfect seal of all gaskets
(unions, fittings, etc.).

Assembly of piping on vehicle is carried out by taking into
account some important solutions:
- Bendings must comply with minimum radiusses, in order

to avoid throttlings;

Minimum bending radius

Pipings diameter

13132

Make sure that pipings are not in contact with sharp
edges or with cutting metallic parts or with heat
sources, but that are distant therefrom by a minimum
safety distance of 15 mm.

6 x 1

8 x 1

10 x 1.5

12 x 1.6

16 x 2.34

≈ 40

≈ 50

≈ 60

≈ 75

≈ 100

Screw the fitting in the threaded seat provided on the
pneumatic valve and lock it at the tightening torque shown in
the table.

- Check that the sealing ring (1) is into its suitable seat;
- screw the fitting till it is felt that the sealing gasket abuts

onto the valve;

- adequately swing the fitting and keeping the swingable

part still, lock the hexagonal nut at the tightening torque
mentioned in the table.

39307

39306

Rotating fittings:

Swinging fittings:

Rotating and swinging fittings:

FITTING

TIGHTENIG TORQUE (Nm

10%)

THREADING

M 10 x 1.0 mm

M 12 x 1.5 mm

M 14 x 1.5 mm

M 16 x 1.5 mm

M 22 x 1.5 mm

Figure 15

Figure 16

Figure 17

URO

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12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

(mm)

In case of disassembling of fittings (1) from pneumatic
components, check the sealing ring (2) status, and if necessary
replace it.

33977

33978

- Use homologated pipes only;
- Check the spare pipe status, on which no cracks, cuts or

nicking must be detected;

- Cut the pipe at 90

° with a max 15° error with respect to

the axis through the suitable pipe-cutting pliers 99387050
at the necessary length;

33976

A = Marking to identify pipe end-of-stroke

- Strongly and indelibly mark with ink two reference

notches on both diametrically-opposed pipe faces for an
angle

≥ 75°, placed at the distances of L

and L

guarantee a correct assembly.

Dimensions L

and L

change depending on the pipe

diameter and must be measured from the longest pipe
part (see Figure 18).

19.8

20.5

27.1

(mm)

39308

- Manually insert pipe (2) into fitting (1), with a force varying

from 30 to 120 N depending on pipe diameter, so that the
notch L

is placed inside the fitting while the notch L

visible.

FITTING

SEALING RINGS

THREADING

DIMENSIONS

Every time a piping is detached from a quick
connection fitting, it is necessary to replace the fitting
itself. Quick connection fittings are supplied complete
as spares.

M 10 x 1.0

M 12 x 1.5

M 14 x 1.5

M 16 x 1.5

M 22 x 1.5

10.1 x 1.6

11.0 x 2.0

15.0 x 2.0

Quick connection and threaded fittings, as well as
flexible pipings used with quick connection fittings
and flexible pipings used with threaded fittings, are
not interchangeable.

Figure 18

Figure 19

Figure 20

Figure 21

+0.5

-0.5
+1

URO

ARGO

ECTOR

12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

Principle diagram for single vehicles (Models 110 EL.. - 120 EL..)

1. Single-cylinder 225 cm

(359 cm

optional) compressor - 2. 0.26l silencer - 3. Air Processing Unit - 4. 15l front axle air

tank - 6. Manual condensate exhaust valve - 7. Safety valve (optional) - 8. Engine brake control button - 9. Engine brake

control solenoid valve - 10. Engine brake valve control cylinder - 11. Relay valve - 12. Phonic wheel - 13. Revolutions sensor -

14. Rear axle brake disc - 15. - Rear axle brake caliper - 16. Combined cylinder - 17. Parking relay valve - 18. Inserted parking

brake signalling low pressure switch - 19. Rear axle ABS solenoid valve - 20. Manual parking control distributor -

21. Manual safety distributor (optional) - 22. Duplex distributor - 23. Front axle ABS solenoid valve - 24. Front axle brake

disc - 25. Front axle brake caliper - 26. Front axle membrane cylinder - 27. Revolutions sensor - 28. Phonic wheel -

29. Quick discharge valve - 30. ABS electronic unit - 31. Parking brake luminous signaller - 32. STOP lights - 33. Front

axle/rear axle manometer - 34. STOP lights relay control switch - 35. EDC inserted brake signalling switch -

36. Pneumatic control plug.

A. To pneumatic suspension system - B. To differential block - C. To gearbox control.

84013

Figure 22

URO

ARGO

ECTOR

12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

Content .. 167 168 169 170 ..

Iveco EuroCargo (12 to 26 t). Manual - part 169