Iveco EuroCargo (12 to 26 t). Manual

Figure 67

Figure 68

Unscrew securing screws (1) and with hydraulic trolley
99321024 (2) detach the wheels.

Remove protection plug (2) from brake caliper (1).
Through a wrench rotate adjustment screw (3) clockwise by
1/2 revolutions increasing clearance between braking gaskets
and disc.
Slightly actuate the brakes (braking pressure about 1 bar) for
about 5 times, simultaneously verifying that the wrench
rotates counterclockwise with small rotations till the
required clearance (0.7 mm) is restored between disc and
braking gaskets.
Otherwise, if the wrench does not rotate, rotates only upon
the first application or even rotates forward and backward,
this means that the device is faulty. It is then necessary to
replace the complete caliper.

At the end of the check and/or possible replacement of brake
caliper, attach again the wheels tightening the nuts in the
required sequence and tightening torque.

527417

Braking gaskets replacement

Arrange the vehicle on a plane ground and lock its rear
wheels; loosen nuts (1, Figure 67) securing the front wheels.
With an hydraulic jack lift the vehicle from its front side and
rest it on two support stands.
Unscrew securing nuts and with hydraulic trolley 99321024
(2, Figure 67) detach the wheels.

Verify that the caliper freely rotates on its guides.
If anomalies are detected on one brake caliper only, it is
advisable to proceed with the complete revision of both
brake calipers.
Remove dirt from brake caliper using a metal brush and
avoiding to damage dust-guarding casings.
Clean braking gaskets sliding surfaces.
Check brake disc conditions as described in the related
chapter.
Check wear sensors conditions, and when detecting
anomalies in them, in cables or leads, replace the support
bracket completed with the above-listed parts.
For the assembling, reverse the disassembling operations,
complying for securing the components, with the required
tightening torques.

527420/527450 Efficiency check for braking
gaskets/brake disc wear recovering device

60342

The angular wrench movement is reduced during
the check operation.

The below-described operations are referred to rear
brakes and must be deemed as valid also for front
brakes.

Verify the wear recovering device efficiency as
described in the related chapter.

Disassemble braking gaskets as described in the chapter
about Wheel hubs revision.

Replace all braking gaskets even if only one of them
shows anomalies.

Remove dirt and rust around the braking disc edge with a
scraper or an old screwdriver, resting on the caliper body,
making disk (1) rotate.
End the work with abrasive cloth. Remove residuals by using
a suction device or with canvasses and brush.
Do not use petrol or other petroleum derivatives that could
create brake failures.
Use only denatured alcohol with methanol or isopropyl
alcohol.
Accurately clean brake disc braking area surfaces.

Checks

Visually check dust-guarding casings conditions; if
they show distortions or breakages, it is necessary to
replace them; such operation implies the need of
disassembling the brake caliper, so that it is advisable
to detach the brake caliper body completed with
carrier plate for the complete revision.

40570

URO

ARGO

ECTOR

12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

60336

60345

60638

60639

61993

Figure 69

Figure 70

Figure 71

Figure 72

Figure 73

For disassembling the braking gaskets, comply with what is
described in chapter about ”Braking gaskets replacement”.

Unscrew screws (1 and 4) and detach brake caliper (2) from
rear axle case flange (3).

Reconnection

Disconnection

If the brake caliper disconnection-reconnection
operation is related to rear axle assembled on a
vehicle it is necessary to withdraw the brake cylinder
(2) by unscrewing the screw placed on its rear side.
Disconnect supply piping from brake cylinder (2).
Remove nuts (1) and detach brake cylinder (2) from
brake caliper.

Due to the type of brake caliper only and due to its
weight, it is necessary to suitably support the brake
caliper during disconnection and transport.

For the reconnection, reverse the operations
performed for the disconnection and comply with
the required tightening torques. At the end of
reconnection

operations,

verify

the

wear

recovering device efficiency as described in the
related chapter.

Screws (3) must not be unscrewed.

Unscrew screws (2) and detach brake caliper (3) from
support (1).

Withdraw guide pins (2 and 3) from brake caliper (1) and
from protection casings (4).

Take brake caliper (1) to bench and lock it in a vice. With a
screwdriver remove small covers (2).

Disassembly

URO

ARGO

ECTOR

12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

Brake calipers disconnection and

527413

BRAKE CALIPERS REVISION

reconnection

61994

61995

61996

60644

Figure 74

Figure 75

Figure 76

Figure 77

Remove protection casings (2 and 3) from brake caliper (1).
Remove casing (5) from adjustment screw (4) and remove
this latter one from brake caliper (1).

Check of component parts

Lock screw (2) rotation inserting in this latter one’s groove
(

→) a screwdriver. From the opposite part to brake caliper

(1), unscrew screw (3) to check its threading conditions.
When detecting anomalies, replace the complete brake
caliper.
For washing the metal parts, use an hot water solution with
Fiat LCD detergent.
By using a metal brush remove dirt from caliper body, then
with a brush remove residuals and accurately clean guide pins
and sliding bushes.
Proceed with an accurate blowing of the caliper body
through a jet of compressed air.
With a canvas drenched with isopropyl alcohol or the like,
accurately clean the sliding pins.

Check sliding pins and related bushes wear conditions on the
brake caliper body, make sure that there are no wears or
damages on sliding surfaces. Insert pins in bushes and verify
their

regular

sliding,

otherwise

proceed

with

their

replacement.
Measure bush (1) diameter in many points.

Assembly

With a beater (2) assemble bushes (3, 4 and 5) on brake
caliper (1) placing them into this latter one at the heights
mentioned in the figure. Fill with grease the room between
assembled bushes (3 and 4).

Replace all bushes even if only one of them is worn.

A regular braking very much depends on brake
caliper sliding on guide pins.

URO

ARGO

ECTOR

12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

60648

60649

61962

Figure 78

Figure 79

Figure 80

Place brake caliper (3) on support (2) so that sliding pins (10,
Figure 79) are inserted in support seats (2). Screw new
screws (1 and 4).

Assemble new plugs (1) into brake caliper (2) bushes housing
holes.

Tighten at the required torque long screw (4) and
then short screw (1). Every time screws (1 and 4) are
unscrewed or appear loosened during possible
checks, it is necessary to replace them with other
new ones.

At the end verify that casings (7 and 8, Figure 79) are not
damaged, and that brake caliper freely slides on pins, slightly
and carefully lift casings (8, Figure 79) lip from sliding pins to
discharge possible pressurised air formed inside them.

REPLACEABLE PART COMPOSING THE BRAKE CALIPER

1. Screw* - 2. Braking gaskets check fork* - 3. Wear sensors - 4. Support completed with wear sensors - 5. Electric cable

check spring - 6. Brake caliper - 7. Protection casing - 8. Protection casing - 9. Bush - 10. Sliding pin - 11. Screw* -

12. Plug* - 13. Plug* - 14. Screw* - 15. Bush - 16. Braking gaskets - 17. Small springs - 18. Connector support blade.

The parts must be replaced upon every disassembly with new ones.

URO

ARGO

ECTOR

12-26 t

PNEUMATIC SYSTEM - BRAKES

Base - February 2003

Content .. 182 183 184 185 ..

Iveco EuroCargo (12 to 26 t). Manual - part 184